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Project Title & Location
US 12 - Tieton River East and West Bridges - Replacement
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Project Description
This project will replace two structurally deficient bridges across the Tieton River with two wider bridges that meet current standards. A new, straighter roadway between the two bridges will be constructed, moving the roadway away from a rockfall hazard.
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Contractor/Consultant
Project has not been advertised or awarded.
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Recent Progress
Preliminary wetland mitigation, riparian planting and large woody debris plans have been completed and will be submitted as part of the Joint Aquatic Resource Permits Application (JARPA).
Constructability and work zone meeting was held in late November.
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Design Construction Impacts
The Cost Risk Analysis / Value Engineering Study identified several risks that, in addition to the escalation in construction costs, could push project costs beyond the approved budget. At the 90% confidence level, the total project cost could be $13.1 million compared to the $10.6 million budgeted.
Recent nationwide price escalation for work and material and inflation has increased the overall cost of this project by approximately $2.7 million over the $10.6 million budgeted.
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Environmental Impacts / Compliance
This project will be used as a pilot for joint USFWS & NMFS biological opinion. The challenge will be getting both agencies to agree on the document in a timely manner.
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Impacts to Traffic
We plan to utilize existing bridges to detour traffic.
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