Highlighted Project:‎ ‎ ‎ ‎ ‎ ‎‎ I-84: Pendleton Interchange Bridges

Details

County: Umatilla

Nearest City: Pendleton

Milepoints: 209.49 - 211.01

Estimated Cost Range: $10M - $30M

Anticipated Construction Years: 2029 - 2031

This project is programmed to start in 2027.

Programed projects have funding identified, are scheduled for 2027 and were approved by the OTC in January 2026.

Project Description

This project focuses on the I-84 interchange bridges in Pendleton – at U.S. 395 (exit 209) and OR 11 (exit 210).

The top layer of these bridge decks are failing, leading to a rough driving surface and ongoing maintenance. These surfaces are likely contaminated with chlorides, which can cause concrete to deteriorate faster.

This project involves inspecting the surfaces of the bridges, removing the existing surface layers, replacing any contaminated concrete and laying a new surface layer.

If we don’t address the problem now, the decks will continue to deteriorate, reducing their lifespan and increasing long-term repair costs.

Expected Outcome

Once the work is done, the bridge will have a smoother driving surface, fewer maintenance needs, and less disruption for travelers. Removing the contamination will extend the life of the structure and reduce long-term repair costs.

Safety

Improve overall safety for system users.

Removing the existing deteriorated concrete and replacing it with a new layer of concrete reduces hazards associated with pavement damage, such as vehicle damage and sudden swerving to avoid road damage. As well as prevent further deterioration that could result in vehicle damage or crashes caused by drivers attempting to avoid damaged concrete.

State of Good Repair

Extend the life of critical infrastructure.

By removing and replacing the contaminated concrete, we will stop ongoing damage caused by moisture and chloride. This will prevent deeper structural issues and help avoid major repairs or full bridge deck replacements.

Improved driving surface.

Replacing the existing pavement surface will provide improved smoothness and drivability.