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Project Title & Location
US 12/SR 124 to McNary Pool – Add Lanes –
Tri-Cities (Phase 2) MP 295.2 to MP 299.3
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Project Description
This project is the second phase of five phases that will reconstruct US 12 as a four lane divided highway from SR 124 to the Walla Walla River, and plan for the future four-laning from the Wallula Junction to Walla Walla.
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Contractor/Consultant
Steelman-Duff, Inc.
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Recent Progress
The Contractor began work on January 3, 2005. The Contractor and WSDOT forces worked on the project for months, building approximately 10 lane-miles of new roadway. On May 31, 2005 the two new US 12 eastbound lanes were opened to traffic, a full five months ahead of schedule. Work continued through June constructing intersection channelization and resurfacing the existing pavement on the (now) westbound US 12 lanes.
Progress slowed through the months of July and August, and resumed the end of August. The new signals were in place and functioning by September 14, 2005. Seeding operations, by contract specification, were finished in October, and the project was considered physically complete on November 21, 2005. The project was completed on schedule and within the proposed budget.
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Design Construction Impacts
There were minor cost overruns, based upon quantity variations, that were covered by the contingency funding.
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Environmental Impacts / Compliance
An Environmental Assessment, a Section 106 study and a noise study were completed. There were no adverse impacts created by this project.
The US Army Corps of Engineers has confirmed that the "Talent Ruling" will not affect this project.
A National Pollution Discharge Elimination System permit has been acquired for construction of this project.
Regional Construction staff, with support from Regional Environmental staff, worked with Contractor personnel to ensure compliance.
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Impacts to Traffic
WSDOT, WSP, and Steelman-Duff have worked with local businesses and schools, to minimize traffic impacts by adjusting work activities during peak hours. One lane of traffic in each direction was maintained at all times during construction. All parties communicated and worked together to minimize disruptions to the traveling public and to provide a work zone that was as safe as possible.
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