Due to the likelihood of a major Cascadia Subduction Zone earthquake, ODOT studied which key bridges and slopes could be armored to maintain connectivity for the least amount of money. The goal is to get the most bang for the buck!
We’ve budgeted ~$53.4 million for the task. Funding came through the legislative 2017 ‘Keep Oregon Moving Act’ and other sources. And we may not be finished yet. As funds become available, additional bridges may be armored in the coming years.
Walk through this virtual open house on how the project will be rolled out and ‘bundled’ for efficiencies.
For ADA (Americans with Disabilities Act) or Civil Rights Title VI accommodations, translation/interpretation services, or more information call 503-731-4128, TTY 800-735-2900 or Oregon Relay Service 7-1-1. Si desea obtener información sobre este proyecto traducida al español, sírvase llamar al 503-731-4128.
All of the bridges can be done under traffic except the Hillcrest Road Bridge. The Hillcrest Road undercrossing needs to be closed because it is too narrow to effectively and efficiently make the bridge improvements. A detour will be established for the east of I-5 neighborhoods using 9th Street to connect Hillcrest Road/ Savage Road and Beacon Drive. Due to concerns over wildfire and evacuation routes.
Drivers worked through short delays and single lane traffic during the spring and summer of 2022 over the OR140 bridges. Traffic was controlled by either flaggers or temporary signals.
At Sutherlin Creek on Del Rio Road crews were able to improve the bridge during August without lane closures. The bridge was jacked-up and new bearings are installed under the bridge.
Each bridge will be replaced, one at a time. Each bridge will take between two and six weeks from start of demolition to traffic riding over the new structure.
For instance, Birdseye and Foots Creek are expected to be about two week closures.
Millers Gulch is expected to take about six weeks due to added in-stream work below the usual high water line.
For neighbors and those who live on Rogue River Highway, expect some out of direction travel on each bridge replacement. The bridge design on the new bridge rails will be more durable and crash resistant than the previous bridge rails.
Each of these known problem areas have been analyzed by geotechnical engineers for recommended stabilization. These slopes and historic slides will be armored using various methods for stabilization, depending on the conditions.
Some of those methods include rock buttress, anchors and better drainage.
The Southern Oregon Seismic Resiliency project will continue to study and seek funding to armor additional bridges in the corridor.
Traffic impacts on Interstate 5 could include single lane traffic in some work zones. On Oregon 140, traffic should expect single lane traffic with flagger control.