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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

Since last summer crews have been working on replacing the bridge deck on U.S. 197 over the Columbia River, but unexpected delays have extended the project timeline. 

As of September 29, weekend closures have resumed on The Dalles Bridge. Closures are Thursday nights from 8 p.m. through Monday mornings at 6 a.m., and will continue into spring of 2023. Unexpected delays like severe winter storms could extend this timeline. The bridge will be open for the weekends of Thanksgiving, Christmas, and New Years. 

When the bridge is closed, a detour will be in place through Biggs Junction (see map below). You can always check for up to date information on construction, closures, and detours. 

Without these closures, there is no other way for crews to complete the complex deck replacement. These continued closures ensure that the bridge won't be entirely shut down for an extended period of time. 

Emergency responders like police, fire and EMS will be able to use the road on the dam for emergency access across the river. ​



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

10/19/2022 5:44 PM

Project Number


Project Documents

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