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OR34/U.S. 20: South Bypass to Peoria Road: Overview
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Congestion in East Corvallis is a long-standing and increasing problem.  The south bypass, built in the early 1990’s, did not solve the bottleneck of traffic that is created at the crossing of the Willamette River.
While river crossing plans had originally focused on the Van Buren Bridge as the cause of the bottleneck, updated traffic models have shown the problem is more complex and widespread.
Improving the Van Buren Bridge is only part of the solution. To address congestion throughout the area requires an integrated approach with multiple components.
If nothing is done, within 20 years from now, traffic studies show congestion will extend for more than a mile from the Willamette River in all directions, with cars idling for 30 minutes or more. Traffic will back up from the river to the Peoria Road intersection and beyond. Congestion in the downtown area will extend south past downtown, over the Mary’s River, and into south Corvallis.
The South bypass project is the first phase of the long term solution. It includes a slip lane that 'slips' past the intersection, allowing free flowing traffic for vehicles traveling north on the south bypass and turning east on OR 34. The project will also include a frontage road on the south side of the road, providing access to the soon-to-be-developed Alan Berg park. Finally, the project will construct the final connection of the multi-use path between the bypass intersection and the Susan Wilkins bike path. This project is fully funded and scheduled for construction in 2013.

Current Status
ODOT has $6.575 million allocated for the development of this interchange project.
This project is a first phase of a larger solution needed to ease congestion in east Corvallis. The larger solution will require infrastructure that allows for free-flow of traffic at the southern bypass, frontage roads between the bypass interchange and Peoria Road as well as a northern bypass that connects the bypass interchange to OR 99W and U.S. 20.