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US-197: The Dalles (Columbia River) Bridge Deck Replacement

Construction Phase

Region 4: Central Oregon (The Dalles, Wasco)

​​​​​​​​​Bridge Safety Project


Construction Impacts

Construction work has already begun. Currently, travelers can expect to see delays of up to 20 minutes weeknights between 8 p.m. and 6 a.m. due to single lane closures. During these times, traffic will be controlled by flaggers. A temporary construction speed zone has been put in place across the bridge, reducing the speed to 35 mph.  This speed reduction will remain in effect until the project is completed next year.

Full weekend closures of The Dalles Bridge have begun, and will and last until the weekend before Memorial Day 2022. Closures are scheduled from 8 p.m. Thursday nights through 6 a.m. Monday mornings. 

During these closures, a detour will route traffic across the bridge at Biggs Junction. See map.


​Are you impacted by The Dalles bridge closure for work, school, or play? ODOT is partnering with Commute Options to help people get where they need to go. Check out your ridematch options! Make new friends, save gas, and share the ride. Click on the link below to explore more.

Questions? Contact for more information. ​​

Meetings and Events


The Dalles (Columbia River) Bridge between Washington and Oregon is closed from 8 p.m. on Thursdays through 6 a.m. on Mondays. Use an alternate route during these times. The established, signed detour route is via I-84, US97 at Biggs Jct. and SR14 to the east. Full bridge closures will continue to occur every weekend between September 9, 2021 and May 23, 2022, except for the weekends of Thanksgiving, Christmas and  New Years. Crews will work overnight (Mon. - Wed. nights); expect delays up to 20 minutes during nighttime hours while flaggers control traffic across the bridge. Crews will continue bridge deck replacement and continue forming new concrete panels at their pre-cast yard location.​


Contract Bid Let - Fall 2020

Construction - Spring 2021 - 2022



ODOT, in partnership with the Washington Department of Transportation, will improve the safety and upgrade The Dalles Columbia River Bridge. The project includes:
  • Replacing the exisitng concrete bridge deck
  • Replacing bridge rail
  • Installing new illumination and navigation lights system across the bridge
  • Installing bridge screening over the locks and BNSF Railway​


U.S. 197 | The Dalles Columbia Bridge spans the Columbia River between The Dalles, OR and Dallesport, WA. 

Cost and Funding

Total project cost is just under $41 million. The cost is shared 50/50 with Washington Department of Transportation.


​Hamilton Construction

What Problem Will This Improve?

This steel-truss-cantilever bridge on U.S. 197 was constructed in 1953. The existing bridge deck is failing and needs to be replaced. This bridge crosses the Columbia River and is a crucial connection point between the Dalles, Oregon and Dallesport and Murdock, Washington. This project will remove and replace the exisitng bridge deck and make critical safety repairs. ​

Contacts & Media

The Dalles Bridge

Project Contacts

Community Affairs Coordinator
Kacey Davey

Project Manager
Brad DeHart

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Last Updated

10/14/2021 9:34 AM

Project Number


Project Documents

Related documents to this project
DallesBridgeClosure.pdfDalles Bridge Closure Information
DallesBridgePIP.pdfThe Dalles Bridge Deck Replacement Project Information Paper

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