Interchange Study 2013 - swrdc.org

I-90 Interchange

Study

TABLE OF CONTENTS Prepared by

Southwest Regional Development Commission and

Region Nine Development Commission

May 2013

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TABLE OF CONTENTS .............................................................................................................. i

INTRODUCTION......................................................................................................................... 1

1.1 Study Area ........................................................................................................................................... 1

1.2 Study Goals and Objectives ................................................................................................................. 1

EXISTING PHYSICAL CONDITIONS..................................................................................... 3

2.1 Existing Land Use ................................................................................................................................ 3

2.1.1 Rock County ................................................................................................................................. 3

2.1.2 Nobles County .............................................................................................................................. 3

2.1.3 Jackson County ............................................................................................................................. 4

2.1.4 Martin County .............................................................................................................................. 4

2.1.5 Faribault County ........................................................................................................................... 5

2.2 Roadways and Roadway Network ...................................................................................................... 6

2.3 Existing Wayside Rest Areas and Travel Information Centers .......................................................... 10

2.3.1 Rest areas along I-90 .................................................................................................................. 10

EXISTING TRAFFIC VOLUMES ........................................................................................... 11

3.1 Existing Traffic Volumes .................................................................................................................... 11

3.2 Crash Data ......................................................................................................................................... 14

3.3 Crash Summary ................................................................................................................................ 14

3.4 Crash Experience ............................................................................................................................... 16

3.4.1 Crash Locations, Rock County .................................................................................................... 16

3.4.2 Crash Locations, Nobles County ................................................................................................. 18

3.4.3 Crash Locations, Jackson County ............................................................................................... 20

3.4.4 Crash Locations, Martin County ................................................................................................. 22

3.4.5 Crash Locations, Faribault County ............................................................................................. 24

FUTURE TRAFFIC VOLUMES AND OPERATIONS ......................................................... 26

4.1 Survey Results ................................................................................................................................... 26

4.1.1. Rock County ........................................................................................................................ 26

4.1.2. Nobles County ..................................................................................................................... 26

4.1.3. Jackson County .................................................................................................................... 27

4.1.4. Martin County ..................................................................................................................... 28

4.1.5. Faribault County .................................................................................................................. 29

SUMMARY ................................................................................................................................. 30

4.1 Overview ........................................................................................................................................... 30

APPENDIX .................................................................................................................................. 32

5.1 Community Survey ................................................................................................................. 32

LIST OF TABLES AND FIGURES

Figure 1.1: I-90 Corridor Study Area ............................................................................................. 2

Table 2.1: Interchanges along the I-90 corridor within the study area ........................................... 7

Table 2.2: Bridge/overpass locations along the I-90 corridor within the study area ...................... 8

Table 3.1: MnDOT Data Products – Traffic Mapping Application.............................................. 12

Table 3.2: Crash Rate .................................................................................................................... 14

Table 3.3: Severity Rate ................................................................................................................ 15

Table 3.4: Crash Cost .................................................................................................................... 15

Table 3.5: Fatal and Incapacitating crashes along the I-90 corridor in Rock County .................. 17

Table 3.6: Fatal and Incapacitating crashes along the I-90 corridor in Nobles County ................ 19

Table 3.7: Fatal and Incapacitating crashes along the I-90 corridor in Jackson County .............. 21

Table 3.8: Fatal and Incapacitating crashes along the I-90 corridor in Martin County ................ 23

Table 3.9: Fatal and Incapacitating crashes along the I-90 corridor in Faribault County ............ 25

I90 – Nobles County – Between Adrian and Rushmore ............................................................... 26

I-90 Interchange Study May 2013 1

Participating Counties

Rock County

Nobles County

Jackson County

Martin County

Faribault County

See Figure 1.1 of Map

INTRODUCTION

MnDOT District 7 has requested assistance from the Southwest Regional Development

Commission (SRDC) and Region Nine Development Commission (RNDC) to conduct an

interchange study along the I-90 corridor. The study will focus on current interchange locations

as well as the need for future interchanges, based upon potential development.

1.1 Study Area

The study area will include that portion of I-90 that exists within the counties of Rock,

Nobles, Jackson, Martin, and Faribault. The study area also directly impacts the cities of Beaver

Creek, Luverne, Magnolia, (Rock County); Adrian and

Worthington (Nobles County); Jackson (Jackson County);

Sherburne, Welcome, and Fairmont (Martin County); and

Blue Earth (Faribault County).

1.2 Study Goals and Objectives

The primary goal of the study is to determine if the current interchange structure along

the I-90 corridor, within the study area, is adequate to meet current needs and to assess future

needs based upon potential growth demand.


Figure 1.1: I-90 Corridor Study Area


EXISTING PHYSICAL CONDITIONS

2.1 Existing Land Use

Interstate 90 runs east-west through the study area. Land use is predominantly

agricultural in nature with small areas of Commercial and Industrial development located at

communities along the corridor.

2.1.1 Rock County

Rock County is located in the southwest corner of Minnesota on the borders of

South Dakota and Iowa. The total land area of Rock County is 482.84 square miles. Rock

County consists of 9 incorporated cities, 2 unincorporated towns, and 12 townships. According

to the 2010 Census, the county had a total population of 9,687. Fifty-nine percent of the

population lives in an incorporated area, or city.

The zoning for a quarter mile either side of the I-90

Corridor, in Rock County, is A-1, Limited Agriculture. The

exception to this is within close proximity of the three cities

along the I-90 corridor: City of Magnolia, the City of

Luverne, and the City of Beaver Creek. Near Magnolia and

Beaver Creek, certain areas are zoned as I-1, General

Industry Districts. The City of Luverne has zoning control on

either side of I-90 at the Highway 75 interchange where it is zoned Highway Commercial and

Commercial Retail.

2.1.2 Nobles County

Nobles County covers a total land area of 722.33 square miles. It consists of 11

incorporated cities, 3 unincorporated towns, and 20 townships. According to the 2010 Census,

the county had a total population of 21,378. Seventy-seven point five percent of the population

lives in an incorporated area. The majority of the applicable zoning along the I-90 corridor in

Nobles County is classified as Agricultural Preservation District (AG). The exception to this is

within close proximity of the three cities along the I-90 corridor in Nobles County: the City of

Adrian, the City of Rushmore, and the City of Worthington. At the Adrian Interchange (I-90 and

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TH 91), both the north and south side of the Interstate is a Highway Business (B-1) District.

The area for a half mile in each direction surrounding the CSAH 13 and I-90 intersection near

Rushmore is also zoned B-1.

I-90 bisects the City of Worthington. Zoning in the Worthington area consists of

Highway Commercial, a PUD (Industrial Park), and Highway Business Districts on the north

side of the Interstate. The south side of the Interstate varies from Agricultural on the far west side

and transitions to Residential (single and multi-family), Highway Commercial, General

Industrial, back to Highway Commercial and Residential on the far east side of town. For a mile

beyond the city limits, I-90 transitions to a General Industry District before changing back to

Agricultural.

2.1.3 Jackson County

Jackson County has a total land area of 719.46 square miles and consists of 6

incorporated cities, one unincorporated town, and 20 townships. According to the 2010 Census,

the county had a total population of 10,266. Fifty-nine percent of the population lives in an

incorporated area.

The majority of the zoning along the I-90 corridor

in Jackson County is classified Agricultural. The

exceptions are: a small individual parcel by the Lakefield

exit (Exit 64) zoned as General Business, however the

current land use is agricultural. Also at the I-90 and TH 71

Interchange (Jackson) where the City of Jackson zoning

designations are Service Business and General Industrial

Districts.

2.1.4 Martin County

Martin County covers a total of 733.24 square miles of territory and is located in south

central Minnesota. Martin County consists of 9 incorporated cities and 20 townships. According

to the 2010 Census, the county had a total population of 20,784. Seventy-four percent of the

population lives in an incorporated area, or city. The remaining twenty six percent lives in an

unincorporated area, or township.


Zoning along the I-90 corridor in Martin County is mainly Agricultural. However the

area along the corridor, within the City of Fairmont, is zoned Commercial/Industrial.

2.1.5 Faribault County

Faribault County covers a total of 712.48 square miles of territory and is located in south

central Minnesota. Faribault County consists of 11 incorporated cities and 20

townships. According to the 2010 Census, the county had a total population of 14,553. Sixty-

nine percent of the population lives in an incorporated area, or city.

Zoning along the I-90 corridor, in Faribault County, is mainly A-2 (General Agriculture

District); however, in the City of Blue Earth, near the I-90/Hwy 169 intersection, the area is

zoned B-2 (Highway Business) and L-1 (Industrial).


2.2 Roadways and Roadway Network

Within the corridor study area there are a total of 26 interchanges and 30

bridges/overpasses. Table 2.1 provides a summary of the interchange locations and table 2.2

provides an overview of the overpass/bridge locations.

The interchanges are relatively evenly spaced with five in Rock County, six in Nobles

and Jackson County and five each in Martin, and Faribault County. Spacing varies from as little

as 1.3 miles between County Highway 4 and County Highway 6 at Beaver Creek in Rock

County, to as great as an 8.95 mile separation between State Highway 86 (Lakefield) and US

Highway 71 (Jackson) in Jackson County. It is interesting to note that each county has a range

of separation between interchanges that varies from approximately 2 miles to as great as 8 miles;

however, the five interchanges in Jackson County range from 6.15 miles apart to 8.95 miles

apart.

There are a total of 29 overpasses/bridges along the I-90 corridor between Rock County

and Faribault County.

County # of overpasses/bridges

Rock County 3

Nobles County 6

Jackson County 6

Martin County 6

Faribault County 8

More information on the spacing between overpasses can be found in Table 2.2


Table 2.1: Interchanges along the I-90 corridor within the study area

County Intersection Feature Mile Post

Rock South Dakota State Boundary TO Trunk Hwy 23 State Line to Interchange 1.06 miles

Rock I-90 and Trunk Hwy 23 TO I-90 and CSAH 4 Interchange to Interchange 3.85 miles

Rock I-90 and CSAH 4 TO I-90 and CSAH 6 Interchange to Interchange 5.08 miles

Rock I-90 and CSAH 6 TO I-90 and US Trunk Highway 75 Interchange to Interchange 12.49 miles

Rock I-90 and US Trunk Highway 75 TO I-90 and CSAH 3 Interchange to Interchange 18.49 miles

Rock (R) to Nobles (N) I-90 and CSAH 3 (R) TO I-90 and MN Trunk Highway 91 (N) Interchange to Interchange 26.11 miles

Nobles I-90 and MN Trunk Highway 91 TO I-90 and CSAH 13 Interchange to Interchange 33.71 miles

Nobles I-90 and CSAH 13 TO I-90 and CSAH 25 Interchange to Interchange 42.04 miles

Nobles I-90 and CSAH 25 TO I-90 and US Trunk Highway 59 Interchange to Interchange 43.75 miles

Nobles I-90 and US Trunk Highway 59 TO I-90 and MN Trunk Highway 60 Interchange to Interchange 45.17 miles

Nobles I-90 and MN Trunk Highway 60 TO I-90 and CSAH 3 Interchange to Partial Interchange 47.82 miles

Nobles I-90 and CSAH 3 TO MN Trunk Highway 264/CSAH 1 Interchange to Interchange 50.75 miles

Jackson I-90 and MN Trunk Highway 264/CSAH 1 TO I-90 and CSAH 9 Interchange to Interchange 57.73 miles

Jackson I-90 and CSAH 9 TO I-90 and MN Trunk Highway 86 Interchange to Interchange 64.76 miles

Jackson I-90 and MN Trunk Highway 86 TO I-90 and US Trunk Highway 71 Interchange to Interchange 73.80 miles

Jackson I-90 and US Trunk Highway 71 TO I-90 and CSAH 29 Interchange to Interchange 80.11 miles

Jackson (J) to Martin (M) I-90 and CSAH 29 TO I-90 and MN Trunk Highway 4 Interchange to Interchange 87.32 miles

Martin I-90 and MN Trunk Highway 4 TO I-90 and MN Trunk Highway 263/CSAH 27 Interchange to Interchange 93.68 miles

Martin I-90 and MN Trunk Highway 263/CSAH 27 TO I-90 and CSAH 39 Interchange to Interchange 99.81 miles

Martin I-90 and CSAH 39 TO I-90 and MN Trunk Highway 15 Interchange to Interchange 102.05 miles

Martin I-90 and MN Trunk Highway 15 TO I-90 and MN Trunk Highway 262/ CSAH 53 Interchange to Interchange 107.20 miles

Martin (M) to Faribault (F) I-90 and MN Trunk Highway 262/ CSAH 53 (M) TO I-90 and CSAH 1 (F) Interchange to Interchange 113.27 miles

Faribault I-90 and CSAH 1 To I-90 and US Trunk Highway 169 Interchange to Interchange 119.91 miles

Faribault I-90 and US Trunk Highway 169 TO I-90 and MN Trunk Highway 254/CSAH 17 Interchange to Interchange 128.57 miles

Faribault I-90 and MN Trunk Highway 254/CSAH 17 TO I-90 and MN Trunk Highway 253 Interchange to Interchange 134.59 miles

Faribault I-90 and MN Trunk Highway 253 TO I-90 and MN Trunk Highway 22 Interchange to Interchange 138.69 miles

Faribault to Freeborn I-90 and MN Trunk Highway 22 to Freeborn County Line Interchange to County Line 142.79 miles


Table 2.2: Bridge/overpass locations along the I-90 corridor within the study area


Rock South Dakota State Boundary TO I-90 and CSAH 11 State Line to Overpass 9.33 miles

Rock I-90 and CSAH 11 TO I-90 and CSAH 9 Overpass to Overpass 14.48 miles

Rock I-90 and CSAH 9 TO I-90 and County Rd 55 Overpass to Overpass 16.48 miles

Nobles I-90 and County Rd 55 TO I-90 and CSAH 19 Overpass to Overpass 22.51 miles

Nobles I-90 and CSAH 19 TO I-90 and CSAH 35 Overpass to Overpass 25.94 miles

Nobles I-90 and CSAH 35 TO I-90 and CSAH 15 Overpass to Overpass 29.68 miles

Nobles I-90 and CSAH 15 TO I-90 and County Rd 60 Overpass to Overpass 31.68 miles

Nobles I-90 and County Rd 60 TO I-90 and County Rd 61 Overpass to Overpass 35.72 miles

Nobles I-90 and County Rd 61 TO I-90 and CSAH 9 Overpass to Overpass 37.71 miles

Nobles (N) to Jackson (J) I-90 and CSAH 9 (N) TO I-90 and CSAH 5 (J) Overpass to Overpass 54.69 miles

Jackson I-90 and CSAH 5 TO I-90 and County Rd 67 Overpass to Overpass 62.73 miles

Jackson I-90 and County Rd 67 TO I-90 and CSAH 17 Overpass to Overpass 68.77 miles

Jackson I-90 and CSAH 17 TO I-90 and CSAH 14 Overpass to Overpass 71.80 miles



Jackson I-90 and CSAH 34 TO I-90 and County Rd 85 Overpass to Overpass 78.09 miles

Jackson (J) to Martin (M) I-90 and County Rd 85 (J) TO I-90 and CSAH 7 (M) Overpass to Overpass 84.16 miles

Martin I-90 and CSAH 7 TO I-90 and CSAH 28/CSAH 23 Overpass to Overpass 91.28 miles

Martin I-90 and CSAH 28/CSAH 23 TO I-90 and County Rd 130 Overpass to Overpass 96.82 miles

Martin I-90 and County Rd 130 TO I-90 and CSAH 32/CSAH 41 Overpass to Overpass 101.32 miles

Martin I-90 and CSAH 32/CSAH 41 TO I-90 and Twp. 230th Avenue Overpass to Overpass 104.17 miles

Martin I-90 and Twp. 230th Avenue TO I-90 and CSAH 59 Overpass to Overpass 110.24 miles

Martin (M) to Faribault (F) I-90 and CSAH 59 (M) TO I-90 and CSAH 5 (F) Overpass to Overpass 115.78 miles

Faribault I-90 and CSAH 5 TO I-90 and CSAH 6 Overpass to Overpass 119.49 miles



Faribault I-90 and CSAH 13 TO I-90 and County Rd 109 Overpass to Overpass 126.54 miles



Faribault I-90 and County Rd 109 TO I-90 and CSAH 19 Overpass to Overpass 130.56 miles

Faribault I-90 and CSAH 19 TO I-90 and County Rd 221 Overpass to Overpass 132.57 miles

Faribault I-90 and County Rd 221 TO I-90 and CSAH 31 Overpass to Overpass 141.74 miles

Faribault to Freeborn I-90 and CSAH 31 TO I-90 and Freeborn County Line Overpass to County Line 142.79 miles


I90 eastbound

Beaver Creek (milepost 0)

Adrian (milepost 24)

Clear Lake (milepost 69)

Blue Earth (mile post 119)

Hayward (milepost 162)

I90 westbound

Adrian (milepost 25)

Des Moines River (milepost 72)

Blue Earth (mile post 119)

Oakland Woods (milepost 171 in

Freeborn County)

2.3 Existing Wayside Rest Areas and Travel Information Centers

Wayside Rest Areas are situated at four

different locations along the I-90 corridor study area:

MN/SD border (east bound lane is owned by

Minnesota and west bound lane owned by South

Dakota), Adrian, Jackson, and Blue Earth. These

Wayside Rest Areas are located at approximately 50-

mile intervals, with the exception of the MN/SD state

border and Adrian which is spaced at 25 miles. There

is also a Travel Information Center south of I-90 and

the city of Worthington (Nobles County) near the junction of TH 59 and 60.

2.3.1 Rest areas along I-90


EXISTING TRAFFIC VOLUMES

Average annual daily traffic (AADT) volumes and heavy commercial average annual traffic

(HCAADT) volumes vary along the I-90 corridor. AADT volumes and HCAADT volumes

provide a useful and simple measurement of how busy a road segment is. Based on this

information accurate estimates can be made for resurfacing and if the road segment needs

additional interchanges. Below are the 2010 and 2011 AADT volumes and HCAADT volumes

for the five counties includes in the study.

3.1 Existing Traffic Volumes

The Annual Average Daily Traffic (AADT) measures the total volume of vehicle traffic

of a highway or road for a year divided by 365 days. AADT is a useful and simple measurement

of how busy the road is. The table below provides data on existing traffic volumes for this

segment of I-90. The AADT ranges from 7,800 (Jackson County) to a high of 12,200 in Rock

County.

The table also provides data on the HCAADT (Heavy Commercial Annual Average

Daily Traffic) for this same segment of roadway. HCAADT ranges between 850 in Nobles

County, to as high as 1,750 in Martin County. The higher heavy commercial vehicle flow in

Martin County is likely attributed to the truck traffic associated with the ethanol facility.

In all counties, with the exception of Nobles, the HCAADT has remained the same or

increased. The lower AADT and HCAADT on I-90 through Nobles County may be a reflection

of the TH 60 construction over the past two years.


Table 3.1: MnDOT Data Products – Traffic Mapping Application

BEGIN DESCRIPTION END DESCRIPTION CITY NAME

BEGIN TRUE MILES

END TRUE MILES

2010 AADT

2010 HCAADT

2011 AADT

2011 HCAADT

RO

CK

CO

UN

TY

South Dakota – Minnesota State Line Jct MNTH-23

0 1.057 12200 1400

1400

Jct MNTH-23 EB Exit Ramp to CSAH-4

1.057 3.713 10300 1250

1250

EB Exit Ramp to CSAH-4

EB Entrance Ramp from CSAH-6

Beaver Creek city 3.713 5.249 9900 1200

1200

EB Entrance Ramp from CSAH-6 Jct USTH-75 SB Luverne city 5.249 12.476 10000 1200

1200

Jct USTH-75 SB EB Entrance Ramp from CSAH-3

12.476 18.68 9900 940

950

NO

BL

ES

CO

UN

TY

EB Entrance Ramp from CSAH-3 Jct MNTH-91 Adrian city 18.68 26.62 850 8800 850

Jct MNTH-91 EB Entrance Ramp from CSAH-13 26.62 33.897 870 8500 820

EB Entrance Ramp from CSAH-13 Jct CSAH-25 Worthington city 33.897 42.255 880 8600 830

Jct CSAH-25 Jct USTH-59 Worthington city 42.255 43.739 890 9800 930

Jct USTH-59 Jct MNTH-60 Worthington city 43.739 45.148 990 9300 890

Jct MNTH-60

Jct MNTH-264;Nobles-Jackson County line 45.148 50.738 1200 8000 1150

JA

CK

SO

N C

OU

NT

Y JCT MNTH-264;Nobles

–Jackson County line EB Entrance Ramp from CSAH-9 50.738 57.926 7900 1150 1150

EB Entrance Ramp from CSAH-9 Jct MNTH-86 57.926 64.767 8100 1150 1150

Jct MNTH-86 Jct USTH-71 Jackson city 64.767 73.813 8000 1150 1150

Jct USTH-71 WB Exit ramp to CSAH-29 73.813 80.281 7800 1500 1500

WB Exit Ramp to CSAH-29 Jct MNTH-4 80.281 87.309 8400 1550 1550


BEGIN DESCRIPTION END DESCRIPTION CITY NAME

BEGIN TRUE MILES

END TRUE MILES

2010 AADT

2010 HCAADT

2011 AADT

2011 HCAADT

MA

RT

IN C

OU

NT

Y

Jct MNTH-4 Jct MNTH-263 87.309 93.675 8200 1600 1650

Jct MNTH-263 WB Exit Ramp to CSAH-39 93.675 100.003 8800 1700 1700

WB Exit Ramp to CSAH-39 Jct MNTH-15 Fairmont city 100.003 102.053 9700 1750 1750

Jct MNTH-15 CSAH-53 Bridge Overhead 102.053 107.202 9000 1700 1700

CSAH-53 Bridge Overhead Jct CSAH-1 107.202 113.272 9000 1400 1500

FA

RIB

AU

L

T C

OU

NT

Y Jct CSAH-1 Jct USTH-169 Blue Earth city 113.272 119.909 1350 9000 1500

Jct USTH-169 Jct MNTH-254 119.909 128.538 1350 8800 1500

Jct MNTH-254 Jct MNTH-253 128.538 134.546 1350 9100 1500

Jct MNTH-253 Jct MNTH-22 134.546 138.63 1350 9400 1550

Jct MNTH-22 Jct MNTH-109 138.63 146.292 1950 8300 2100


3.2 Crash Data

Interchanges provide access on and off I-90. There are a number of points of conflict

around these interchanges. Design can often help to mitigate the risk of a crash. Designing an

interchange with fewer points of conflict or engineering new interchanges are two ways to make

a road segment safer. Analyzing the interchanges along the I-90 corridor, in regards to crash

data, can help illuminate problematic interchanges. This report includes Interchange crash data

from 2002-2011 and crash data from 2003 to 2012 for the five counties included in the study.

3.3 Crash Summary

Between the years 2002 and 2011, there were a total of 671 crashes reported amongst the

26 interchanges along the five county corridor in District 7. In that ten year time span, the

crashes resulted in at least 8 fatalities (K), 16 crashes where there was an incapacitating injury

(A), 49 crashes where there was at least one non-incapacitating injury, 94 crashes where there

was an unknown or possible injury, and 504 where there was property damage only as a result of

the crash.

MnDOT has a crash rate factor which incorporates the total crashes, the approach volume

of traffic and the number of days into a formula. The highest five crash rates at the I-90

interchanges were in Jackson, Martin and Faribault counties.

Table 3.2: Crash Rate

County RP Description Crash Rate

Jackson 073+00.799 TH 71/JACKSONCO 1.19

Martin 102+00.051 TH 15/FAIRMONT 1.05

Martin 093+00.682 TH 263 RTCSAH27 LT/MARTINCO 0.96

Faribault 119+00.914 TH 169/BLUE EARTH 0.96

Martin 107+00.195 TH 262 LTCSAH53 RT/GRANADA 0.94

MnDOT has a severity rate range that places a higher weight on a fatal crash and a lower

weight on a property damage crash. There are 10 Interchanges with a severity rate over 1.0.


Their locations are in all five of the study area counties, with the highest severity rate of 1.77 at

the TH 71 Interchanges at Jackson.

Table 3.3: Severity Rate

County RP Description Severity Rate

Jackson 073+00.799 TH 71/JACKSONCO 1.77

Faribault 119+00.914 TH 169/BLUE EARTH 1.53

Martin 093+00.682 TH 263 RTCSAH27 LT/MARTINCO 1.47

Martin 102+00.051 TH 15/FAIRMONT 1.41

Rock 001+00.058 TH 23 LT CSAH19 RT/ROCKCO 1.37

Nobles 045+00.173 TH 60/WORTHINGTON 1.22

Martin 107+00.195 TH 262 LTCSAH53 RT/GRANADA 1.22

Martin 087+00.321 TH 4/SHERBURN 1.08

Nobles 026+00.626 TH 91/ADRIAN 1.08

Faribault 138+00.687 TH 22/S OFWELLS 1.07

MnDOT has applied crash cost factors to the type of crashes that occurred to calculate a

measurable fiscal cost. The more severe the crash, such as a fatality, the higher the crash cost.

Below are interchanges where the cost factor was greater than $100,000. The highest crash cost

calculated was the I-90 / TH 71 Interchange at Jackson where there cost was calculated at

$252,580.

Table 3.4: Crash Cost

County

RP

Description

Crash Cost

Jackson 073+00.799 TH 71/JACKSONCO $252,580

Nobles 045+00.173 TH 60/WORTHINGTON $202,280

Faribault 119+00.914 TH 169/BLUE EARTH $199,020

Rock 012+00.481 TH 75/LUVERNE $177,960

Martin 102+00.051 TH 15/FAIRMONT $172,480

Rock 001+00.058 TH 23 LT CSAH19 RT/ROCKCO $170,500

Martin 093+00.682 TH 263 RTCSAH27 LT/MARTINCO $168,660

Martin 087+00.321 TH 4/SHERBURN $129,620

Martin 107+00.195 TH 262 LTCSAH53 RT/GRANADA $115,840


3.4 Crash Experience

3.4.1 Crash Locations, Rock County

Between the years 2002 and 2011, there were a total of 113 crashes reported at the five

interchanges in Rock County. In that ten year time span, there were three crashes that resulted in

at least 1 fatality (K), 1 crash where there was an incapacitating injury (A), 11 crashes where

there was at least one non-incapacitating injury, 18 crashes where there was an unknown or

possible injury, and 80 where there was property damage only as a result of the crash.


of traffic and the number of days into a formula and a severity rate range that places a higher

weight on a fatal crash and a low weight on a property damage crash. The highest crash rate

intersection and severity rate was the TH 23 / CSAH 19 Interchange at mile marker 1+00.58 at

0.89 and 1.37 respectively.

The highest crash cost calculated was the I-90 / TH 75 (RP 12+00.481) Interchange at

Luverne where there was one fatal crash, one type A and 3 type B crashes with a cost of

$177,960. Total calculated crash cost for the five interchanges over the ten years was $506,200

The data comparison indicates that the fatality at TH 23 was likely to be a 2002 crash and

did not show up in the 2003-2012 data. There were six fatal crashes along the corridor, three at

or near Interchanges.


Table 3.5: Fatal and Incapacitating crashes along the I-90 corridor in Rock County

I-90 Crashes, Rock Co 2003-2012 data Reference Point Type K/ A # Fatal # Vehicles

Beaver Creek Rest Area (east bound) 0

Jct MNTH-23 001+00.058

CSAH-4 003+00.851

CSAH-6 005+00.077 K 1 1

Between Exits 006+00.400 K 1 1


Between Exits 007+00.650 A 0 1


Within 1 mile 012+00.287 A 0 1

Jct USTH-75 012+00.481 K 1 1





CSAH-3 018+00.487


3.4.2 Crash Locations, Nobles County

Between the years 2002 and 2011, there were a total of 163 crashes reported at the six

interchanges in Nobles County. In that ten year time span, there was one crash which resulted in

at least 1 fatality (K), 2 crashes where there was an incapacitating injury (A), 12 crashes where






intersections were at TH 60 (CR 0.88, RP 45+00.173) and TH 91 (CR 0.85, RM 26+00.626); and

highest severity rate was the TH 60 Interchange at reference mark 45+00.173.

The highest crash cost calculated was the I-90 / TH 60 Interchange at Worthington

where there was one fatal crash, one type A and 5 type B crashes with a cost of $202,280. Total

calculated crash cost for the six interchanges over the ten years was $423,200

The data comparison indicates that the fatality at TH 60 remained in the 2003-2012 data

base. There were ten fatal crashes along the corridor, three at or near Interchanges. Two fatal

crashes occurred near the Adrian rest area, one within a mile of TH 91, one within a mile of the

Nobles CSAH 13 Interchange and one within a mile of the Nobles CSAH 3 Interchange. The

remaining four fatalities occurred between the interchanges or accesses to the Interstate.


Table 3.6: Fatal and Incapacitating crashes along the I-90 corridor in Nobles County

I-90 Crashes, Nobles Co 2003-2012 data Reference Point Type K/ A # Fatal # Vehicles

Adrian Rest Area (west and east bound) 24.1 – 24.9

Adrian Rest Area 024+00.000 K 1 2

Adrian Rest Area 024+00.000 K 1 1

Within 1 mile 026+00.200 K 1 1

Jct MNTH-91 026+00.626 A 0 1

Within 1 mile 026+00.899 A 0 2

Between Interchanges 029+00.000 K 2 1

Between Interchanges 030+00.000 A 0 2

Within 1 mile 032+00.700 A 0 1

Within 1 mile 032+00.800 K 1 1

CSAH-13 033+00.707





Within 1 mile 041+00.300 A 0 1

Jct CSAH-25 042+00.263

Within 1 mile 042+00.000 A 0 1

Jct USTH-59 043+00.745

Jct MNTH-60 045+00.173 K 1 1

Within 1 mile 045+00.200 A 0 1

Worthington Weigh Station 46+00.xxx

Within 1 mile 046+00.791 A 0 2

Nobles CSAH 3 047+00.816

Within 1 mile 048+00.400 K 1 1


3.4.3 Crash Locations, Jackson County


interchanges in Jackson County. In that ten year time span, there was one crash resulted in at

least 1 fatality (K), 5 crashes where there was an incapacitating injury (A), 7 crashes where there

was at least one non-incapacitating injury, 10 crashes where there was an unknown or possible

injury, and 73 where there was property damage only as a result of the crash.



weight on a fatal crash and a low weight on a property damage crash. The highest crash rate and

severity rate intersection was at TH 71 at Jackson (CR 1.19, SR 1.22, RP 73+00.799). The

highest crash cost calculated was the I-90 / TH 71 Interchange at Jackson where there was one

fatal crash, three type A and 3 type B crashes with a cost of $252,580. Total calculated crash

cost for the five interchanges over the ten years was $415,820.

The data comparison indicates that the fatality identified at TH 71 (Jackson) was likely to

be a 2002 crash and dropped from the 2003-2012 data base. There was one fatal crash along the

corridor within one mile of Jackson CSAH 9.


Table 3.7: Fatal and Incapacitating crashes along the I-90 corridor in Jackson County

I-90 Crashes, Jackson Co 2003-2012 data Reference Point Type K/ A # Fatal # Vehicles

Jct MNTH-264; Nobles-Jackson Co line 050+00.748


Within 1 mile 057+00.434 K 1 2

CSAH-9 057+00.734

Jct MNTH-86 064+00.763 A 0 1

Clear Lake Rest Area (eastbound) 69+00.4xx


Des Moines River Rest Area (westbound) 72+00.5xx

Jct USTH-71 073+00.799 A 0 1

Jct USTH-71 073+00.799 A 0 1

Within 1 mile 073+00.828 A 0 1




CSAH-29 080+00.110


3.4.4 Crash Locations, Martin County


interchanges in Martin County. In that ten year time span, there were 2 crashes that resulted in at

least one fatality (K), 6 crashes where there was an incapacitating injury (A), 7 crashes where






intersection was the TH15 Interchange in Fairmont with a rating of 1.41and the highest severity

rate was the TH 263 Interchange at mile marker 093+00.682 at 1.47.

The highest crash cost calculated was the I-90 / TH 15 (RP 102+00.051) Interchange at

Fairmont. There were no fatal crashes at this location, but there were 2 type A and 2 type B

crashes with a cost of $172,480. Total calculated crash cost for the five interchanges over the ten

years was $658,580.


Table 3.8: Fatal and Incapacitating crashes along the I-90 corridor in Martin County

I-90 Crashes, Martin Co 2003-2012 data Mile Marker Type K/ A # Fatal # Vehicles

WB Exit ramp to CSAH-29 080+00.281

Jct MNTH-4 087+00.309

Within 1 mile either direction 087+00.321 K 1 2

MNTH-263 093+00.675

Within 1 mile either direction 093+00.682 A 0 1


WB Exit Ramp to CSAH-39 100+00.003


Within 1 Mile either direction 099+00.807 A 0 1

Jct MNTH-15 102+00.053


CSAH-53 Bridge Overhead 107+00.202





Jct CSAH-1 113+00.272


3.4.5 Crash Locations, Faribault County


interchanges in Faribault County. In that ten year time span, there was 1 crash that resulted in at

least one fatality (K), 2 crashes where there was an incapacitating injury (A), 12 crashes where






intersection and severity rate was the TH169 Interchange in Blue Earth with a rating of 0.96 and

1.53 respectively.

The highest crash cost calculated was also the I-90 / TH 169 (RP 119+00.914)

Interchange at Blue Earth. There were no fatal crashes at this location, but there were 2 type A

and 6 type B crashes with a cost of $199,020. Total calculated crash cost for the five

interchanges over the ten years was $407,560.


Table 3.9: Fatal and Incapacitating crashes along the I-90 corridor in Faribault County

I-90 Crashes, Faribault Co 2003-2012 data Mile Marker Type K/ A # Fatal # Vehicles

Jct CSAH-1 113+00.272




Jct USTH-169 119+00.909








Jct MNTH-254 128+00.538




Jct MNTH-253 134+00.546



Jct MNTH-22 138+00.630

Between Interchanges 140+.00991 A 1 1


Jct MNTH-109 146+00.292


FUTURE TRAFFIC VOLUMES AND OPERATIONS

4.1 Survey Results

An on-line survey was distributed to communities along the corridor (cities, counties,

EDA’s, Planning and Zoning offices, etc.). A copy of the survey can be found in Appendix A.

Below is a summary of the survey results.

4.1.1. Rock County

4.1.1.A Survey Results

Rock County anticipates commercial and business development and business expansion

(Papik Motors) along the I-90 corridor over the next five years in the Luverne area. There was a

recent development of a large feed mill west of Magnolia which utilizes the Magnolia

interchange. The community of Beaver Creek indicated that they do not anticipate development

in the near future. With the survey responses and known development, the current interchanges

meet the development needs.

4.1.1.B Safety Concerns

Rock County did not note any safety concerns in their survey responses.

4.1.2. Nobles County


Nobles County anticipates development of

major traffic generators along the I-90 corridor over the

next five years. Worthington anticipates development

of major traffic generators that are commercial and

business development in the fields of agricultural related, research and development, and

tourism. There are lots available at the Worthington BioScience Park at the TH 59 and 60

Interchanges as well as the industrial park along TH 59 and the growing industrial and


commercial route of TH 60. Worthington recently annexed land for future growth in the study

area. JBS, a large meat packing plant in Worthington, has indicated a potential expansion

(freezer warehouse), that will increase traffic generation (currently they generate about

500AADT, 75 HCAADT). The newly opened Worthington Event Center and Comfort Inn motel

are projected to increase traffic by 100 vehicles per day.

Brewster area will see expansion of an Ag-related business, the Minnesota Soy Producers

Soybean Plant within five years. The business will require a railroad expansion with the

development of a glycerin plant. The city of Rushmore does anticipate development over the

next five years; but they noted that they have commercial and business development and

warehousing distribution center and the current interchange meets their needs. TH 264 is

bordered by Nobles and Jackson counties and serves the city of Round Lake. Marketing is

currently being done to reopen or reuse a recently closed business in Round Lake, Farleys –

Sathers Candy company. At this time, the TH 264 interchange meets current and future needs.


Nobles County identified a blind area when watching for on-coming traffic at east bound

ramps at TH 59. Lighting at the Rushmore exit was identified as an interchange need not being

met.

4.1.3. Jackson County


Jackson County anticipates development along the I-90 corridor over the next five years

in the Jackson area. While not located along the I-90 corridor, the Heron Lake – New Vision

facility and the Heron Lake Bio Energy current expansion will likely have traffic impacts related

to I-90, the impacts as the result of the expansion are unknown.

Jackson is experiencing growth in several sectors which are generating additional traffic:

commercial/business development, agricultural related business, tourism, warehousing


distribution center, housing development, and technology call center. The city of Jackson

anticipates an additional access to the Interstate will be needed along CSAH 34 south of the

airport at Jackson on Industrial Parkway and south of Industrial parkway for the heavy industrial

development located and expanding in Jackson.


Several safety concerns at Jackson were identified in the survey at the TH 71 Interchange

area (TH 71 and Industrial Parkway and TH 71 and I-90). Specific concerns expressed included:

the volume of cross traffic at the Industrial Parkway and TH 71 and I-90 and TH 71 Intersections

and it was noted that the spacing of the I-90 on/off ramps was done prior to development. It is

anticipated that there will be a 20% increase in traffic in this area due to the AGCO (a large

Agricultural Equipment Manufacturer) expansion project. Additional development is currently

occurring (business, commercial and housing) at the Industrial Parkway and TH 71 area and will

generate more traffic. A suggested solution for the current and future increased traffic

generation at the TH 71 and Industrial parkway intersection, located just south of the I-90 on/off

ramps, is a traffic signal or round-a-bout.

4.1.4. Martin County


Martin County anticipates development along the I-90 corridor over the next five years.

Development is most likely to occur at the intersection of Hwy 15/I-90 (City of Fairmont) and I-

90/Hwy 263 (City of Welcome). Development is likely to occur in the areas of “Commercial/

Business Development” (e.g. industrial park development or expansion), “Ag-related businesses”

(e.g. ethanol plant, grain elevator, bioscience), “Research/development institute”,

“Warehousing/Distribution Center”, and Housing Development. It is anticipated that the new

business will result in major traffic generators. All respondents felt that the current interchange

system was adequate to meet their future development needs.



There was a safety concern noted in the Martin County survey responses. Currently, at

the intersection of I-90 and Hwy 15, there are un-signalized intersections at the off ramps onto

TH 15. There is a safety concern with cross traffic at these un-signalized locations.

4.1.5. Faribault County


Faribault County also anticipates development along the I-90 corridor over the next five

years. Development is most likely to occur at the intersection of Highway 169/I-90 in the City of

Blue Earth. It is anticipated that the development will be “Commercial/Business Development”

(e.g. industrial park development or expansion), “Ag-related businesses” (e.g. ethanol plant,

grain elevator, bioscience), and Housing Development. It is anticipated that the new

development will result in major traffic producers. However, all respondents felt that the current

interchange system was adequate to meet their needs. They also did not have any current safety

concerns along the corridor.


Safety is also a concern pertaining to I-90 interchanges in southwest Minnesota. Fifty-

three percent of survey respondents feel that safety is a concern pertaining to the current

interchange system. Safety concerns range from blind areas and congestion around the

interchange to poor design and having to cross traffic which is dangerous for heavily loaded

trucks.


SUMMARY

4.1 Overview

Interstate 90 (I-90) provides an important transportation route linking southwest

Minnesota to the rest of Minnesota, the Midwest, and the United States. This route is heavily

traveled both by car and truck traffic. I-90 is a major component of economic development in

south central and southwest Minnesota.

The top three types of developments along the I-90 corridor are commercial or business

development, Ag related business development, and housing development. Communities along

the corridor have the opportunity to expand due to increased demand from the high average daily

traffic volumes along I-90. According to

the I-90 Interchange Study Survey,

seventy eight percent of respondents

anticipate development along their stretch

of the I-90 corridor within the next 5

years. Fifty five percent of those

development projects will produce major

traffic generators onto I-90.

With a number of projects planned

for the next five years along the I-90 corridor in southwest Minnesota, additional access to I-90

may be needed in some areas. Of the thirty six total responses, seven indicated that there may be

a need for future interchange development along the corridor. Six of the responses were from

Jackson County and one was from Nobles County.

The primary goal of the study was to determine if the current interchange structure along

the I-90 corridor, within the study area, is adequate to meet current needs and to assess future

needs based upon potential growth demand.


Three sets of criteria will be used in formulating this determination: crash data, existing

infrastructure, and future need based upon survey responses.

First, when looking at the crash data in Section 3.2 and 3.3 there appears to be a

consistent theme in the analysis of the crash rate, severity rate, and crash cost. Three

intersections continue to show up in the top five lists for each of the above three categories.

Topping the list in all three categories is the interchange at I-90 and TH 71 in Jackson County.

This intersection has the highest crash rate (1.19), severity rate (1.77) and crash cost ($252,580).

The interchange at I-90 and TH 15 in Fairmont is second in crash rate (1.05), fourth in severity

rate (1.41), and fifth in crash cost ($172,480), while the interchange at I-90 and TH 169 in Blue

Earth is fourth in crash rate (.96), second in severity rate (1.53), and third in crash cost

($199,020).

Secondly, when looking at the existing infrastructure there appears to be an even spacing

of interchanges and overpasses/bridges throughout the five county area. However, there does

appear to be a potential need in Jackson County, where the existing interchange spacing is

greater than that of the other counties. If an additional interchange were to be constructed in

Jackson County, it seems as though the existing overpass/bridge infrastructure would serve as a

good catalyst for a new interchange.

Finally, according to the community survey, the existing infrastructure appeared to meet

current needs, as well as anticipated future development needs in all counties, with the exception

of Jackson County. Jackson is experiencing growth in several sectors which are generating

additional traffic: commercial/business development, agricultural related business, tourism,

warehousing distribution center, housing development, and technology call center. The city of

Jackson anticipates an additional access to the Interstate will be needed along CSAH 34 south of

the airport at Jackson on Industrial Parkway and south of Industrial parkway for the heavy

industrial development located and expanding in Jackson.


APPENDIX

5.1 Community Survey

Interchange Study 2013 - swrdc.org

Documents

Transcript of Interchange Study 2013 - swrdc.org