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Project Title & Location
US12/McNary Pool to Attalia - Add Lanes
Tri-Cities (Phase 1)
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Project Description
McNary Pool to Attalia is the first phase of five phases to 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 - Clarkston
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Recent Progress
Construction activities resumed March 1, 2004, following a winter shutdown. Since the resumption of work, the Stage 1 concrete bridge deck and bridge approach slabs have been placed. Environmental mitigation planting operations started on the North and South Casey Pond planting benches, and Two Rivers Mitigation Site. Asphalt paving of the new eastbound lanes is completed. Traffic has been moved to the new lanes, allowing paving of existing lanes and Stage 2 bridge construction.
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Design Construction Impacts
The construction office continues to work with the SCR Environmental office in an effort to advance the in-water work window. An on site meeting was held on February 5, 2004, with representatives from FHWA, COE, Fish and Wildlife, SCR Environmental and the project office to review work conditions and in-water construction impacts. Advancing the in-water work window will expedite completion of the project by one month. The remaining in-water work involves demolition of the existing bridge structure.
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Environmental Impacts / Compliance
On 10/26/03, the project passed a federal and state environmental compliance review. The nearby air quality monitoring station continues to record no problems, and the contractor ensures that dust is controlled at all times. The cultural consultant was present on site as needed.
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Impacts to Traffic
Impacts to traffic continue to be minimal. The traffic revision on the bridge creating narrower lanes continued through this quarter; both lanes remained open at all times. Delays caused by construction vehicles delivering surfacing materials and asphalt were frequent but brief in duration.
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