Western Canyon and Owyhee County Corridor Studies Welcome

WelcomeThank you for your interest in the Western Canyon and Owyhee County Corridor Studies. The purpose of today’s meeting is to gather input on locations for future improvements to:

• U.S. 95, Oregon State Line to Jct. U.S. 20/26 (Nyssa Junction)

• U.S. 20/26, Oregon State Line to I-84 (Caldwell)

• ID-19, Oregon State Line to Cleveland Blvd (Caldwell)

US 20/26 and Roswell Road In Parma

US 20/26 Facing East

Western Canyon and Owyhee County Corridor Studies

Study descriptionThe Idaho Transportation Department is developing corridor studies for several highways in Canyon and Owhyee counties. A corridor study is a 10- to 20-year plan that documents the existing conditions and future needs of a highway.


U.S. 20/26, Oregon State Line to I-84 (Caldwell)

U.S. 95, Oregon State Line to Jct. U.S. 20/26 (Nyssa Junction)

ID-19, Oregon State Line to Cleveland Blvd (Caldwell)


Study process and scheduleInitiate corridor planning process 2018

Begin traffic analysis August 2018

Determine potential locations for improvements Spring 2019

Gather input from the public Summer 2019

Finalize traffic analysis Fall 2019

Finalize corridor studies Spring 2020

Share studies with public Spring 2020


Source: Utah Department of Transportation, Parley's Interchange EIS

Traffic Capacity and Safety:Existing Conditions

Legend

Study Intersection

Study HighwaySegment

/ ImprovementsRecommended

Fatal Traffic Crash(2013-2017)

AADT Annual Average DailyTraffic

LOS Level of Service

Int. 7 US-95 & US-20/26

2018 AADT = 9,400 veh/day 2018 LOS = C2013-2017 Crashes: 8 2040 LOS ≈ F

Int. 7 US-95 & US-20/26


Int. 8 US-95/20/26 & Market Rd




Int. 12 US-95/20/26 & Anderson Corner

2018 AADT = 7,300 veh/day 2018 LOS = C2013-2017 Crashes: 14 2040 LOS ≈ D


2018 AADT = 7,300 veh/day 2018 LOS = C2013-2017 Crashes: 14 2040 LOS ≈ D

Int. 18 US-20/26 & Farmway Rd




Seg. 7 US-952018 AADT = 5,300 veh/day

2013-2017 Crashes: 26


2013-2017 Crashes: 26

Seg. 8 US-95/20/262018 AADT = 8,900 veh/day

2013-2017 Crashes: 7


2013-2017 Crashes: 7

Seg. 19 US-20/262018 AADT = 7,300 veh/day

2013-2017 Crashes: 29


2013-2017 Crashes: 29

Int. 17 US-20/26 & Conway Rd

2018 AADT = 9,900 veh/day 2018 LOS = C2013-2017 Crashes: 4 2040 LOS ≈ E



Int. 9 US-95/20/26 & Parma Rd




Parma

Notus

Caldwell

Nyssa, OR


2013-2017 Crashes: 5


2013-2017 Crashes: 5


2013-2017 Crashes: 10


2013-2017 Crashes: 10


2013-2017 Crashes: 7


2013-2017 Crashes: 7


2013-2017 Crashes: 29


2013-2017 Crashes: 29

NORTH STUDY AREA

Recommended Improvements

Legend

Study Intersection




Seg. 7 US-95• Add rumbles on centerline and

edge lines/shoulders



Seg. 18 US-20/26• Add rumbles on centerline and

edge lines/shoulders• Widen paved shoulders to at least

6 feet



6 feet


edge lines/shoulders• Widen to four or five lanes (long-term)



Caldwell

Nyssa, OR

Seg. 8 US-95/20/26• Add rumbles on centerline and


• Add two-way left turn lane

• Widen to four or five lanes (long-term)

Seg. 8 US-95/20/26• Add rumbles on centerline and


• Add two-way left turn lane

• Widen to four or five lanes (long-term)

Int. 7 US-95 & US-20/26

• Provide a median refuge forvehicles turning left fromUS-95 onto US-20/26

Int. 7 US-95 & US-20/26

• Provide a median refuge forvehicles turning left fromUS-95 onto US-20/26


• Provide a median refuge forvehicles turning left fromMarket Rd onto US-95/20/26

• Widen US-95/20/26 to five lanes


• Provide a median refuge forvehicles turning left fromMarket Rd onto US-95/20/26

• Widen US-95/20/26 to five lanes


• Provide a median refuge forvehicles turning left fromParma Rd onto US-95/20/26


• Provide a median refuge forvehicles turning left fromParma Rd onto US-95/20/26

Parma


• Add advance warning signs and beacons(North and south legs)

• Add transverse rumbles(East and west legs)

• Add “Cross Traffic Does Not Stop”plaques below stop signs

• Restricted Crossing U-Turn intersection (RCUT)

• Roundabout


• Add advance warning signs and beacons(North and south legs)



• Restricted Crossing U-Turn intersection (RCUT)

• Roundabout


• Provide a median refuge forvehicles turning left fromConway Rd onto US-20/26

• Widen US-20/26 to five lanes


• Provide a median refuge forvehicles turning left fromConway Rd onto US-20/26

• Widen US-20/26 to five lanes

Notus


• Add a southbound right turn lane

• Traffic signal

• Roundabout


• Add a southbound right turn lane

• Traffic signal

• Roundabout

Seg. 10 US-95/20/26• Widen to four or five lanes (long-term)

Seg. 10 US-95/20/26• Widen to four or five lanes (long-term)

Seg. 22 US-20/26• Widen to four or five lanes (long-term)

Seg. 22 US-20/26• Widen to four or five lanes (long-term)

Seg. 21 US-20/26• Widen to four or five lanes

(long-term)

Seg. 21 US-20/26• Widen to four or five lanes

(long-term)

NORTH STUDY AREA

Int. 1 US-95 & SH-55

2018 AADT = 6,500 veh/day 2018 LOS = B2013-2017 Crashes: 7 2040 LOS ≈ C

Int. 1 US-95 & SH-55

2018 AADT = 6,500 veh/day 2018 LOS = B2013-2017 Crashes: 7 2040 LOS ≈ C

Int. 2 US-95 & Idaho 19/Idaho Ave




Int. 15 Idaho 19 & Farmway Rd

2018 AADT = 17,900 veh/day 2018 LOS = F2013-2017 Crashes: 28 2040 LOS ≈ F


2018 AADT = 17,900 veh/day 2018 LOS = F2013-2017 Crashes: 28 2040 LOS ≈ F

Int. 6 US-95/5th St & Peckham Rd




Seg. 14 Idaho 19/Idaho Ave2018 AADT = 6,100 veh/day

2013-2017 Crashes: 7

Seg. 14 Idaho 19/Idaho Ave2018 AADT = 6,100 veh/day

2013-2017 Crashes: 7


2013-2017 Crashes: 19


2013-2017 Crashes: 19

Seg. 15 Idaho 19/Simplot Blvd2018 AADT = 9,200 veh/day

2013-2017 Crashes: 27


2013-2017 Crashes: 27


2013-2017 Crashes: 28


2013-2017 Crashes: 28


2013-2017 Crashes: 16


2013-2017 Crashes: 16


2013-2017 Crashes: 26


2013-2017 Crashes: 26

Traffic Capacity and Safety:Existing Conditions

Int. 14 Idaho 19 & Notus Rd

2018 AADT = 11,000 veh/day 2018 LOS = D2013-2017 Crashes: 8 2040 LOS ≈ F



Int. 5 US-95 & Idaho 19/Simplot Blvd

2018 AADT = 9,600 veh/day 2018 LOS = E2013-2017 Crashes: 13 2040 LOS ≈ F


2018 AADT = 9,600 veh/day 2018 LOS = E2013-2017 Crashes: 13 2040 LOS ≈ F

Int. 3 US-95 & Homedale Rd




Homedale

Marsing

Caldwell

GreenleafWilder

Legend

Study Intersection




AADT Annual Average DailyTraffic

LOS Level of Service

SOUTH STUDY AREA



6 feet



6 feet

Seg. 15 Idaho 19/Simplot Blvd• Add rumbles on centerline and


Seg. 15 Idaho 19/Simplot Blvd• Add rumbles on centerline and


Seg. 16 Idaho 19/Simplot Blvd• Add rumbles on edge lines/shoulders

Seg. 16 Idaho 19/Simplot Blvd• Add rumbles on edge lines/shoulders

Seg. 17 Idaho 19/Simplot Blvd• Access management

• Consolidate or close driveways when possible

• Limit the number of new accesses/driveways

Seg. 17 Idaho 19/Simplot Blvd• Access management

• Consolidate or close driveways when possible

• Limit the number of new accesses/driveways





Recommended Improvements

Legend

Study Intersection





• Add a westbound left turn lane

• US-95 “road diet” through Wilder(convert from four lanes to three lanes)

• All-way stop


• Add a westbound left turn lane

• US-95 “road diet” through Wilder(convert from four lanes to three lanes)

• All-way stop


• Provide a median refuge forvehicles turning left fromIdaho 19/Idaho Ave onto US-95


• Provide a median refuge forvehicles turning left fromIdaho 19/Idaho Ave onto US-95


• Provide a median refuge forvehicles turning left fromHomedale Rd onto US-95

• Traffic signal

• Roundabout


• Provide a median refuge forvehicles turning left fromHomedale Rd onto US-95

• Traffic signal

• Roundabout Int. 1 US-95 & SH-55

• Add advance warning signs and beacons(East and west legs)

• Add transverse rumbles(North and south legs)

• All-way stop

• Roundabout

Int. 1 US-95 & SH-55

• Add advance warning signs and beacons(East and west legs)

• Add transverse rumbles(North and south legs)

• All-way stop

• Roundabout


• Add “Cross Traffic Does Not Stop”

plaques below stop signs


• Provide a median refuge forvehicles turning left fromIdaho 19 onto US-95

• Traffic signal

• Roundabout


• Add “Cross Traffic Does Not Stop”

plaques below stop signs


• Provide a median refuge forvehicles turning left fromIdaho 19 onto US-95

• Traffic signal

• Roundabout



• Add a southbound right turn lane• Add a 2nd eastbound through lane• Add a northbound right turn lane

• Traffic signal

• Roundabout



• Add a southbound right turn lane• Add a 2nd eastbound through lane• Add a northbound right turn lane

• Traffic signal

• Roundabout


• Traffic signal

• Roundabout


• Traffic signal

• Roundabout

Seg. 14 Idaho 19/Idaho Ave• Restripe to provide a

two-way left turn lane

• Access management• Consolidate or close driveways when

possible• Limit the number of new

accesses/driveways

Seg. 14 Idaho 19/Idaho Ave• Restripe to provide a

two-way left turn lane

• Access management• Consolidate or close driveways when

possible• Limit the number of new

accesses/driveways

Homedale

Marsing

Caldwell

GreenleafWilder

SOUTH STUDY AREA

Roundabout

(Restricted Crossing U-Turn)RCUT

there is no cross traffic- Unnecessary stopping when

approaches for turn lanes- More right-of-way needed on

maintain- Expensive to install and- Increase in rear-end collisionsCons:

collisions- Reduced angle (broadside)

street traffic- Improved operation for minor

at intersections- Maximum degree of controlPros:

AAllll W- aW yay StS ot pop Traffic Signal All intersections can be designed to accommodate commercial and agricultural vehiclesINTERSECTION TYPES

required- Wide median or "loons"

street movements- Increased delay for minorCons:

- Inexpensive to maintain fewer conflict points

- Safer than signal due toPros:

roundabouts especially with dual-lane

- Can have a learning curve, at intersection center

- More right-of-way neededCons:

- Inexpensive to maintain safer for pedestrians

- Slower speeds are generally on approaches

- Less right-of-way needed stops

- Reduced delay and fewer crashes, 76% fewer injuries

- Improved safety; 35% fewerPros:

volumesat moderate and high least effective form of control

- Limited traffic capacity; if all-way is not warranted

- Often disobeyed by driversCons:

- Very inexpensive to install and pedestrians

- Low crash rate for vehiclesPros:

Rumble strips are 1/2" deep grooves,typically located on the shoulder, outsidethe edge paint lines. These cause moderatenoise and vibration when driven over.

Rumble StripsRumble stripes are shallower (3/8") groovescut in the same location as edge and/orcenter line paint causing minor noise andvibration. These have an added benefit ofincreasing the retro-reflectivity of thepaint, particularly at night during rain.1

Rumble Stripes

Centerline Rumble Stripe

Improved Safety1 - Federal Highway Administration

Source: ITD Standard Drawing 631-1

Shoulder Rumble Strip

The difference between the two is their depth and location on the road.

Both rumble strips and rumble stripes are roadway features that improve safety.What's the difference?

RUMBLE STRIPS AND STRIPES

rumbles reduce distracted and drowsy crashes 40% to 80%.1hhaavvee rreedduucceedd ssiinnggllee vveehhiiccllee llaannee ddeeppaarrttuurree ccrraasshheess bbyy 3300%% ttoo 4400%%.. S tS ut du idei se sa lasl os os hs oh wow been shown to reduce crossover crashes 40% to 60%. Shoulder rumbles on freeways Studies have shown both types of rumbles improve safety. Centerline rumbles have

1 - Rosales, J., Road Diet Handbook: Setting Trends for Livable Streets, Institute of Transportation Engineers, Washington, DC, 2006.2 - Federal Highway Administration, Road Diet Policies

ROAD DIET

2.5'BUFFER 5'

SIDEWALK

6.5'PARKING

6'BIKELANE

12' TRAVEL LANE 12' CENTERTURN LANE 12' TRAVEL LANE

6'BIKELANE

6.5'PARKING

5'SIDEWALK

2.5'BUFFER

2'C&G

2'C&G

80' EXISTING RIGHT OF WAY

CL

2.5'BUFFER 5'

SIDEWALK

2'C&G 8'

PARKING 15' TRAVEL LANE 15' CENTERTURN LANE 15' TRAVEL LANE 8'

PARKING

2'C&G 5'

SIDEWALK

CL


2.5'BUFFER 5'

SIDEWALK

6'PARKSTRIP

2'C&G 6.5'

PARKING 12' TRAVEL LANE 12' CENTERTURN LANE 12' TRAVEL LANE 6.5'

PARKING

2'C&G 6'

PARKSTRIP

5'SIDEWALK

2.5'BUFFER

CL


2.5'BUFFER

General Example of a Road Diet 2

calming.- Can be used with raised landscape medians for beautification and traffic- Increased livability, thereby increasing the demand for housing.- Improve Access for bicycle and pedestrian traffic.

- Shorter pedestrian crossing distance; use with bulb-outs and islands.- Overall crashes can be reduced by 19%.

- Improve SafetyBenefits of a Road Diet

What is a road diet?

Existing US-95 through Wilder - from Original 1963 Plans

ILLUSTRATION B - Using Existing Curbs

ILLUSTRATION C - New Construction

ILLUSTRATION A - Using Existing CurbsPotential Roadway Layouts Under a Road Diet

2.5'BUFFER 5'

SIDEWALK

2'C&G 8'

PARKING 14.5' TRAVEL LANE 16' CENTERTURN LANE 14.5' TRAVEL LANE 8'

PARKING

2'C&G 5'

SIDEWALK

2.5'BUFFER


CL

and utilizing the space for other uses and travel modes." 1

- A road diet is described as "removing travel lanes from a roadway

Thank you for attending today’s meeting. The Idaho Transportation Department appreciates your input. Comments on the corridor study are being accepted through Sept. 20, 2019. Comments can be sent to:• [email protected] or• Idaho Transportation Department, Att. Adam Rush

3311W. State St., Boise, ID 83703

Once the corridor studies are completed, ITD will determine how best to proceed with making the improvements to US 95, US 20/26 and Idaho 19 in Canyon and Owyhee counties.

To stay informed go to:ITDprojects.org/WesternCanyonOwyheeStudy

Thank you and what’s next


Western Canyon and Owyhee County Corridor Studies Welcome

Documents

Transcript of Western Canyon and Owyhee County Corridor Studies Welcome