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The project team has advanced two alternatives as well as a no-build or “do nothing” alternative for
study in the Environmental Assessment.
Alternative 1: Replaced US 101 Bridge
- Replace the existing US 101 bridge with a four-lane bridge with bikes lanes and sidewalks.
- Add a through-lane on 3rd Street going east between Ivy and Main avenues.
- Make some changes to 1st Street to help traffic flow better.
- Reconstruct the intersection of Front Street and US 101 and the access to the Hoquarten Interpretive Trail
from US 101.
Alternative 2: Extend Pacific Avenue North
- Construct a new bridge, extending Pacific Avenue north for northbound traffic only, located immediately
adjacent to the existing bridge.
- Maintain the existing bridge for southbound traffic, with bike lanes and sidewalks in addition to two
southbound travel lanes.
- Build the new bridge above the 100-year flood elevation, which makes it higher than the existing bridge.
The southbound and northbound lanes of U.S. 101 meet about 370 feet north of Hoquarten Slough. Construct a median
barrier within the portion of U.S. 101 where the northbound lanes would be higher than the southbound lanes.
- Build an access road from the new extension of Pacific Avenue to the Hoquarten Interpretive Trail.
In either case, the new bridge would be higher than the existing bridge by about 10 feet. This is because the new
bridge would need to be built above the 100 year flood elevation and because the new bridge would be thicker than
the existing bridge.
More detail on the range of alternatives studied, can be found on the
Meeting Materials page.
The first phase of the study concluded in January 2010. The current phase will result in an environmental
assessment for the project. Learn more about the project's timeline (click on the
timeline to open a printer friendly, larger version).
There will be opportunities to get involved along the way.
The intersection of US 101 and OR 6 in Tillamook actually includes four signalized intersections of
one way streets: Main Avenue, Pacific Avenue, First Street and Third Street. Main Avenue carries
traffic south, Pacific Avenue (US 101) carries traffic north, First Street carries traffic west
and Third Street (OR 6) carries traffic east. The City of Tillamook’s Transportation System Plan
(TSP) identified safety and operational issues at these intersections including safety for people
driving and walking, and congestion. The TSP also identifies localized improvements to address
specific issues.
The Tillamook Transportation Refinement Plan (TTRP) evaluated solutions related to pedestrian
safety, truck traffic, and parking in the downtown area. As part of these evaluations, the TTRP
concurred that vehicle traffic at the intersection would exceed ODOT mobility standards within
the 20-year planning period (2025). The TTRP identified and compared improvements to the local
system to enhance mobility but did not identify a preferred alternative for the US 101 /OR 6
intersection.
The US 101/OR 6 Alternatives Study will consider possible solutions to improve safety and traffic
flow at these intersections in downtown Tillamook. The process will take about a year and half to
complete and will identify feasible options for further, more detailed study.
Learn more about the project:
- Alternatives Considered Memo - Revised, December 21, 2009 (PDF, 7.69MB)
- Display Boards of Alternatives - December 15, 2009 (PDF, 733KB)
- Existing Conditions Memorandum - Final, Updated October 30, 2009 (PDF, 1.62MB)
- 2030 Future No-Build Transportation Analysis - Final, Updated October 30, 2009 (PDF, 186KB)
- 2030 Future Build Alternatives Transportation Analysis - Final, Updated October 30, 2009 (PDF, 2.03MB)
- Signal System - May 2009 (PDF, 32KB)
- Environmental Background Report - December 2, 2008 (PDF, 4MB)
- Methods and Assumptions Memorandum - October 17, 2008 (PDF, 199KB)
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