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Project Title & Location
US 12 - Attalia Vicinity - Add Lanes (Phase 3)
Tri-Cities
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Project Description
Attalia Vicinity is the third phase of five phases that will reconstruct US 12 as a four lane divided highway from SR 124 to the Walla Walla River, and develop a plan for future four-laning from Wallula to Walla Walla.
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Contractor/Consultant
Apollo, Inc. of Kennewick, Washington.
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Recent Progress
Cold weather stopped most earthwork activities on this project from December through February. The earthwork for the new eastbound lanes is 85% complete and the contractor will continue work as weather allows.
Contract time was suspended January 22 due to cold weather hampering work items on the critical path. Contract time resumed February 20. All four bridge piers are now complete. The contractor completed setting the bridge girders in early March. Work on the bridge retaining walls is now underway.
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Design Construction Impacts
Generally the project has proceeded well. Most anticipated impacts listed on the risk matrix have been resolved.
The contractor's current schedule shows substantial completion at the end of August 2007. Physical completion is anticipated mid-October, after seeding and fertilizing are complete. Project completion at that time would be well ahead of the initial December 2007 anticipated completion.
There have been several change orders to date and some items have overrun plan quantity. While more changes are anticipated though the remainder of the project, all changes combined are anticipated to be covered by the amount set aside for contract contingencies.
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Environmental Impacts / Compliance
Regional Construction staff, with support from Regional Environmental staff, continues to work with Contractor personnel to ensure compliance.
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Impacts to Traffic
Shoulder closures have been used primarily with lane closures used occasionally. The speed limit was reduced from 60 mph to 50 mph during the week days with lane closures. Traffic is now being delayed briefly, allowing construction equipment to cross the roadway. Traffic delays have not exceeded 15 minutes.
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