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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

Currently, one traffic lane may be closed on the bridge nightly, from 8 p.m. until 6 a.m. the following morning.  During these times, traffic will be controlled by flaggers with up to 20 minute delays to the traveling public any night of the week, from now throughout the life of the project, which is planned to end in June 2022. Travelers should plan accordingly for these possible delays. There will be no full bridge closures until after Labor Day 2021. 

Full weekend closures will take place from Labor Day (September) 2021 through Memorial Day (May) 2022. During these weekends, the bridge will close Thursday nights at 8 p.m. and will re-open on Monday mornings at 6 a.m. During these closures, a detour will route traffic across the bridge at Biggs Junction. See map.


Meetings and Events

CONSTRUCTION BULLETIN UPDATE FOR  07/26/21 -- Construction crews will be working overnight (Sun – Thurs. nights); expect delays up to 20 minutes during nighttime hours while flaggers control traffic across the bridge. The majority of work will occur under the bridge and includes finishing scaffolding work and installation of a trolley platform. Crews 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 State DOT​


​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

Last Updated

7/28/2021 3:33 PM

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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