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U.S. 197: The Dalles (Columbia River) Bridge Deck Replacement

Construction Phase

Region 4: Central Oregon (The Dalles, Wasco)

​​​​​​​​​​​​​​Bridge Safety Project


Construction Impacts

Full weekend closures of the bridge have ended for summer but will resume after Labor Day weekend 2022. Weekday nights travelers can expect to see delays of up to 20 minutes 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​.

When weekend closures resume later this year, a detour will route traffic across the bridge at Biggs Junction. See map.


Project Update 4/29/22:

Crews are still working hard to replace the bridge deck on U.S. 197 over the Columbia River, but will not wrap up work by Memorial Day as they’d originally planned. The last full weekend closure before summer happened Monday May 9. Crews will continue to work at night through mid-July. 

We have paused the closures so the road system can better handle increased traffic from tourists, wildfire responders and agricultural workers. 

Weekend closures will resume after Labor Day. Without these closures, there is no other way for us to complete the complex deck replacement. Weekend closures ensure that the bridge won’t be closed entirely for an extended period of time. 

We will continue to meet with stakeholders over the next few​ months to review emergency operations and to discuss how to reduce the impacts caused by this delayed project completion.

A revised construction schedule detailing the weekend closures after Labor Day will be shared this summer.


Contract Bid Let - Fall 2020

Construction - Spring 2021 - 2023



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 existing 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 existing​ bridge deck and make critical safety repairs. ​

Contacts & Media

The Dalles Bridge


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Project Contact

Public Information Officer
Kacey Davey

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Last Updated

5/19/2022 2:26 PM

Project Number


Project Documents

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