|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.
- 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
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 was complete October 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: