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U.S. 26: Glencoe Road Interchange Project


Project Summary:

 
The Oregon Department of Transportation, in partnership with Washington County and the City of North Plains, began construction in July 2012 on a project to improve safety and operations of the U.S. 26/Glencoe Road Interchange. The 2009 Oregon Legislature allocated $32 million in the Jobs and Transportation Act (JTA) for this project.  

 
Project Summary

Latest News (May 2014):

  
This project is substantially complete. The contractor will return in the summer for another 4-5 weeks of additional work.  There will be intermittent lane impacts to complete the work.

Access change: left turns from the Arco gas station onto southbound Glencoe Road are no longer permitted. There is a left turn lane for southbound Glencoe Road traffic to enter the Arco gas station. 

Read the weekly construction news, a report detailing the traffic impacts on the project updated every Friday.

 
**If you'd like to get on the project email distribution list, please send your email address to Lili.D.Boicourt@odot.state.or.us.  

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
    
  
 

Project Overview
ODOT (along with the City of North Plains and Washington County) previously developed a draft Interchange Area Management Plan (IAMP) for the U.S. 26/Glencoe Road interchange, which identified $80 to $90 million of interchange improvements.
 
The 2009 Oregon Legislature allocated $32 million in the Jobs and Transportation Act (JTA) to fund improvements to the interchange. ODOT worked with the city and county to develop a design concept that meets the $32 million budget provided. The project will prioritize safety and mobility improvements and strive to increase capacity for the most critical movements.
 
Project Elements:
  • Replacing the Glencoe Road bridge over U.S. 26 with a new, four-lane bridge (the bridge will be built wide enough to accommodate five lanes in the future)
  • Lengthening and widening the U.S. 26 westbound exit ramp
  • Replacing the culvert on Glencoe Road to the north of the interchange with a new structure
  • Improving pedestrian and bicycle connections on the new bridge over U.S. 26
  • Improving intersection components, including traffic signals, signing, striping, drainage and water quality

 
Glencoe Interchange
The existing two-lane Glencoe Road over-crossing lacks adequate shoulders, turn lanes, and bicycle/pedestrian accommodations.  The most significant safety issue is that the existing westbound off-ramp is not long enough to safely accommodate vehicles using the interchange, creating backups onto U.S. 26. 
 
In addition, the interchange cannot support the projected increase in traffic volumes, both from the adjacent City of North Plains and the larger regional vicinity, which includes the Cities of Hillsboro, Cornelius, and Forest Grove.  The interchange is an important access point from U.S. 26 to these cities.  The U.S. 26/Glencoe Road interchange modernization project is intendend to support economic development and mobility in the region.  This project is needed to support present and planned land use and industrial development in western Washington County. 

Traffic impacts and schedule

Work began in July 2012 and will be complete in summer 2014.  The majority of the traffic impacts will happen at night.  The Glencoe Road overpass will remain open at all times.  During any ramp or road closures, a signed detour will be in place. There are 5 stages of construction:

** Stage 1 (July 2012 to March 2013; complete): Work includes building the west half of the new overpass, building a new alignment of Glencoe Road from U.S. 26 to just beyond Beach Road and building the Ghost Creek Bridge.  Traffic impacts: There will be daytime and nighttime flagging on Glencoe Road, ramp shoulder closures and possible nighttime ramp closures.  U.S. 26 under Glencoe Road will be entirely closed for up to a week at night to set steel beams for the new bridge.  During the highway closure, traffic will be routed onto the Glencoe Road off-ramps and back to the highway using the Glencoe Road on-ramps.  Near the end of Stage 1, Beach Road will be closed at Glencoe Road for one weekend to raise the road to match the new overpass alignment and to install drainage features. 
 
** Stage 2 (March 17 - 24, 2013; complete): Work includes raising and reconstructing the Glencoe Road westbound on-ramp and eastbound off-ramp to match the new overpass alignment.  Traffic impacts: The Glencoe Road westbound on-ramp and eastbound off-ramp will be fully closed during this 1-week work period.  A fully signed detour will be in place directing traffic to the Jackson School Road interchange.
 
** Stage 3 (March 24 - 29, 2013; complete): Stage 3 begins immediately after the completion of Stage 2.  Traffic on Glencoe Road will be shifted onto the newly constructed west half of the overpass.  Work in Stage 3 includes raising and reconstructing the Glencoe Road eastbound on-ramp and westbound off-ramp to match the new overpass alignment.  Traffic impacts: the ramps that were closed in Stage 2 will now be open.  The Glencoe Road eastbound on-ramp and westbound off-ramp will be fully closed during this stage which will begin at 10 p.m. Sunday night and end 5 a.m. Friday morning.  A fully signed detour will be in place directing traffic to the Dersham Road interchange.
  
** Stage 4 (April 2013 to fall 2013; complete): Work includes building the east half of the new overpass and continuing construction of Ghost Creek bridge.  Traffic impacts: These will be very similar to the impacts during Stage 1. Traffic will be in its final configuration when this stage is complete.
 
** Stage 5 (fall 2013 to summer 2014 we are here): Work includes drainage, signals, signs, final paving and striping of Glencoe Road and the ramps.  Traffic impacts: There will be daytime and nighttime flagging on Glencoe Road, ramp shoulder closures and possible nighttime ramp closures.  There will be minimal work from Dec. 2013 to March 2014.
 
Read the weekly construction news, a report detailing the traffic impacts on the project updated every Friday.
 
Nighttime noise

Work on this project will take place during the day and night.  ODOT has obtained a noise variance from the City of North Plains and Washington County for the nighttime work.  Residences and businesses adjacent to the project area may experience construction noise.  There are several measures already in place to help mitigate the noise.  A phone number is available for reporting noise problems or incidents requiring immediate attention.  That number is 503-646-0231.
 

Retaining Walls
As part of the project, ODOT will construct a retaining wall (approximately 450 feet long) along the westbound U.S. 26 off-ramp and a smaller retaining wall (approximately 160 feet long) that will be part of a new tributary bridge. These walls will be visible from a proposed future city trail.
 
There are three options for architectural treatments for these retaining walls. We invited community members to vote for which treatment they would prefer. Voting is now closed and the retaining wall treatment that received the most community votes is Oregon Basalt. This architectural treatment will be incorporated into the design and construction of the Glencoe Road Interchange Project.  
 

Retaining Wall Treatment Options
/ODOT/HWY/REGION1/glencoe/monterey_drystack-11x17.jpg
 
Monterey Drystack
 
  /ODOT/HWY/REGION1/glencoe/monterey_drystack-11x17.jpg
 
Oregon Basalt - WINNER 
 /ODOT/HWY/REGION1/glencoe/monterey_drystack-11x17.jpg 
 
Sandstone Ashlar
 
   

Project Maps/Graphics

Before & After Aerial Graphic 
 
Project Detail Map  
 
Construction Staging
(updated July 2012)
 

Detour Routes  
 
Tributary Bridge & Future Trail 
 
Project Timeline 
  

Jobs and Transportation Act (JTA)
The Oregon Jobs and Transportation Act (HB 2001) is the transportation funding plan approved by the 2009 Oregon Legislature.  Three core themes emerged from the legislation:
 
  • accountability, innovation and environmental stewardship;
  • highway, road and street funding; and
  • multimodal funding.
 
Additional provisions address important elements of Oregon's transportation system and our statewide economy.
 
The JTA identified 37 specific highway projects (plus funding for 12 local governments in eastern Oregon).  These projects and allocations total $960.3 million.  In ODOT Region 1 (Portland-Metro area), there are eight JTA projects, including the U.S. 26/Glencoe Road Interchange project. 
  
U.S. 26 Glencoe Road Interchange Area Management Plan
The U.S. 26 Glencoe Road Interchange Area Management Plan (IAMP) has been developed in conjunction with the U.S. 26: Glencoe Road Interchange Jobs and Transportation Act Project. The purpose of the IAMP is to protect the long-term function and safety of the interchange, and to minimize the need for future major interchange improvements. It is required by law for any new or significantly reconstructed interchange (OAR 734-051-0155.6). 
 
The Oregon Transportation Commission adopted the IAMP in December 2010 (please note that the file is large and may take several minutes to download).   
 
Next Steps

ODOT hosted public open houses on Sept. 23, 2010, June 9, 2011 and July 19, 2012. ODOT staff is available to attend local meetings to discuss this project.  Construction began July 2012.

 
To view archives of public involvement activities, click here

ODOT Contact Information
Lili Boicourt
ODOT Community Affairs Coordinator
503-731-8247
Lili.D.Boicourt@odot.state.or.us
123 NW Flanders
Portland, OR  97209