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 ~$45 million for the task. Funding came through the legislative 2017 ‘Keep Oregon Moving Act’. 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.
While the Exit 80 and Exit 58 bridges are being done under traffic, the Hillcrest bridge work will be done with a full closure of the local road underneath the bridge. Access for the neighborhood east of Hillcrest will be via a short detour on Beacon Drive. Due to concerns over wildfire and evacuation routes, it will be done in the rainy season, November 2022 - May 2023.
Drivers can expect possible short delays and single lane traffic with at least 19 foot wide travel lanes over the OR140 bridges. Traffic will be controlled by either flaggers or temporary signals. Access to neighboring properties will be maintained.
At Sutherlin Creek there will be a short term road closure of less than a week while the bridge is 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.