Workshop Presentation for Canyon County October 21-22, 2009.
Transcript of Workshop Presentation for Canyon County October 21-22, 2009.
Corridor Study
Workshop Presentation for Canyon County
October 21-22, 2009
Corridor StudyWhy are we here tonight?
To talk with you about U.S. 20/26 west of Interstate 84.
To share what we have learned so far.
To hear about your experiences on U.S. 20/26, to help identify its future.
Corridor StudyWhat is a corridor plan?
A mid-range (10-year) plan. Analysis of future travel demand and performance
in the corridor. Evaluation of problems and needs. Identification of corridor improvement priorities.
Our objective is to continue to provide a roadway that is both efficient and safe.
Corridor Study
ITD’s Primary Objectives
Maintain a functional highway - high speed (above 45 mph) links from point to point in Idaho.
Improve safety - identify conflict points or add features that will improve safety and functionality.
Corridor StudyHighway Transportation InvestmentsThe draft 2010-2013 Statewide Transportation
Improvement Program (STIP) does not include any projects for this section of U.S. 20/26.
A STIP is usually a five-year document. This year it is only a four year document because:State funding ($250.4 million) may change after the
Governor’s Transportation Task Force delivers its report in December, 2010.
Federal funding ($302.6 million) from the Highway Trust Fund may change upon reauthorization. The current authorization expired on September 30 and has been extended by continuing resolution. The Trust Fund has been in deficit the last two years ($8 billion each year).
Corridor StudyFunding Challenge:
Idaho’s state and local transportation agencies need an additional $240 million each year to meet increasing transportation needs. ITD has prioritized its existing funds as follows: Operations – Snow plowing, pothole patching,
etc.Preservation – Pavement overlaysRestoration – Rebuilding of the road from the
baseExpansion – Creation of new roads or widening
of current roads (GARVEE)
Corridor Study
What We Know
Corridor StudyTravel Shed Population Growth
Cald-well ZIP
83607
Notus ZIP
83656
Parma ZIP
83660
- 5,000
10,000 15,000 20,000 25,000 30,000 35,000 40,000
20002010
2020
200020102020
Corridor StudyTravel Shed Population (Source: Idaho
Economics, 2008)
Zip Code Areas
2000 actual
2010 estimated
2020 estimated
Rates of Change
Caldwell 83607 16,397 23,847 30,768 +4.4%
Notus 83656 332 469 615 +4.3%
Parma 83660 5,282 6,445 8,448 +3.0%
Corridor US 20/26 Total 22,011 30,761 39,831 +4.0%
Canyon County Total 133,106 192,687 243,802 +4.2%
Corridor Study1994 – 2008 Average Annual Daily
Traffic(Source: Idaho Transportation Department)
Road Section1994 actual
1998 actual
2003 actual
2008 actual
10-Year Rates of Change
State Line to Apple Valley Rd 5,400 4,300 4,200 3,700 -8.5%
Apple Valley Rd to Anderson Corner Rd 5,400 3,300 3,300 3,300 0.0%
Junction US 95 to Notus West City Limit 3,000 4,000 4,000 4,600 +2.0%
City of Notus 3,600 4,000 4,000 4,700 +2.0%
Notus East City Limit to Farmway Rd 3,600 4,400 4,400 6,000 +3.5%
Farmway Rd to Interstate 84 5,000 6,200 6,500 7,400 +2.0%
Corridor StudyLevel of Service (LOS) standard for Rural Highways is “C” or better.LOS can be measured by hourly two-way vehicular traffic and by
annual average daily traffic volumes.
Corridor Study
Jct.
95 to
Not
us
City o
f Not
us
Not
us to
Far
mway
Farm
way
to I-
840
3,000
6,000
9,000
Traffic Growth from Junction 95 to Interstate 84
199820082020 estimated
Source: ITD
Up to 7,200 AADT = LOS B
Up to 12,700 AADT = LOS C
Up to 17,300 AADT = LOS D
Up to 23,500 AADT = LOS E
Source: Florida Department of Transportation
Uninterrupted Flow Highways in Cities of less than 5,000 population
Corridor StudyACCESSNationwide Studies indicate . . .Well managed arterials have 40% - 50% fewer
crashes.An increase of 10–20 access points per mile on major
arterials increases the crash rate by 30%.The 14.060 miles of US 20/26 average 12.3 access
points per mile. State Line to Anderson Corner averages 17.1 access points per mile. Junction 95 to Notus West City Limit averages 7.8 access points per
mile. City of Notus averages 45.3 access points per mile. Notus East City Limit to Farmway Road averages 10.4 access points
per mile. Farmway Road to Interstate 84 averages 14.5 access points per mile.
Corridor StudyHow do access and accidents relate?
Location Miles % Miles Access Points
Access Points
per mile
Accidents 2004 - 2008
Accidents per mile
2004 - 2008
% Access Point
Related Accidents
State Line to Anderson Corner
1.578 11.2 % 27 17.1 14 8.9 35.7 %
Junction 95 to Notus West City Limit
6.116
43.5 %
48 7.8 26 4.3 26.9 %
City of Notus 0.773 5.5 % 35 45.3 11 14.2 72.7 %
Notus East City Limit to Farmway Road
4.419 26.6 % 46 10.4 65 14.7 41.5 %
Farmway Road to Interstate 84
1.174 9.8 % 17 14.5 40 34.1 67.5 %
Corridor StudyAccident ClustersFarmway Road – 10 crashes in the last five
years with an additional 5 crashes nearby.Conway Road – 4 crashes in the last five
years (all eastbound rear-end collisions).
Corridor StudySafety EvaluationSegment Accident Rate Base Rate
(state average)
Evaluation
State Line to Anderson Corner
1.39 1.09 Above base rate
Junction 95 to Notus
0.51 1.14 Below base rate
City of Notus 1.65 1.34 Above base rate
Notus East City Limit to Farmway
1.34 1.34 At base rate
Farmway Road to Interstate 84
2.53 1.16 Above base rate
Source: ITD Office of Highway Safety – 2004 to 2008
Corridor StudySpeed Concerns
Speed studies show we drive an average of 10% over the posted limits
Corridor StudyTransportation Concerns from Scoping
Sessions Access Management Turn lanes at Farmway Road and gravel pit
locations Deceleration lanes Improve shoulder widths east of Farmway Road Vehicle storage at railroad crossings Line of Sight for some locations Drainage
Corridor StudyWhat’s Next?Based on your feedback . . .
Narrow the list of needed improvementsBring policy and physical improvements to
local stakeholder’s Task Force for plan reviewTake recommended plan elements to:
Local planning and zoning commissions Local government (County, City, Highway District) Idaho Transportation Board (ITD)
Corridor StudyStay Involved:For information, visit itd.idaho.gov, go
to Projects, Southwest Idaho, US 20/26 Corridor Study, I-84 to State Line.
Questions, comments or suggestions: [email protected]
For more information, call ITD Office of Communications at 334-8005.
Corridor StudyThank you for attending!
ITD appreciates your comments and will consider them when drafting the corridor study plan.Please take time to examine the exhibits and
discuss your concerns with us and . . .Take the time to mark up the maps of the US
20/26 corridor study area