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Project Evaluation: SR 527, 132nd Street SE to 112th Street SE
Mill Creek and Everett, Snohomish County
WSDOT is widening State Route 527 (Bothel-Everett Highway), from 132nd Street SE in Mill Creek to 112th Street SE in Everett. Crews are adding one new lane in each direction. In addition, crews are also adding new turn and bike lanes, sidewalks, and a combination of two-way turn lanes and center medians; they are also rebuilding traffic signals, adding roadway lighting and installing new water and sewer lines. New drainage facilities and storm water treatment ponds were installed to improve water quality and reduce flooding and erosion.
This partnership project with the City of Everett will complete the widening of SR 527 to four lanes from I-405 in Bothell to I-5 in Everett. The newly widened roadway will provide congestion relief and improve safety.
Construction Summary
This project is currently under construction. The south half of the project opened to traffic in September and the north half of the project is expected to open in December. Crews will continue work over the winter and spring to complete sidewalks, landscaping and the final layer of asphalt. The project is expected to finish about 4-5% over the contractor’s bid and several months later than anticipated.
We encountered design errors in the plans related to drainage, retaining walls, plan clarity, work not included in the contract, work that had yet to be permitted by environmental agencies, outstanding coordination with Snohomish County and underground utility conflicts. WSDOT and KLB Construction worked together to implement solutions to keep cost increases to a minimum and construction moving ahead.
In the spring of 2004, construction got off to a slow start due to the discovery that not all contract plan work was covered in the environmental permits. The permits were revised to match the work shown in the contract plans. The contractor was delayed approximately one month. The project was further delayed by conflicts between existing underground utilities and the installation of new utilities (water, sewer, stormwater drainage) and the discovery of gasoline-contaminated soil.
To make up schedule time for these delays, KLB Construction crews worked through the winter of 2004/2005 to deliver the safety and congestion relief improvements as soon as possible.
In early 2005, utility companies were late in relocating their facilities. This did not allow our contractor full access to widen the roadway from 121st to 112th. To keep construction moving forward the contractor worked from 121st to 116th where utility relocation was completed and started excavation work where possible between 116th and 112th. Delay time is currently being assessed.
We have an excellent working relationship with our contractor KLB Construction. Since the start of the project we have worked together to find and implement cost saving changes. We have deleted several walls by instead constructing a natural slope. KLB Construction initiated a costs savings to use crushed recycled asphalt concrete pavement and cement concrete pavement from the project to build the base for the new roadway. We have worked together to solve problems, minimize costs and keep the schedule moving.
Cost increases are due to contract delays, contaminated soil, contract plan errors and additional work added and paid for by Everett Water District.
Contact Information
Contractor:
KLB Construction, Mukilteo
WSDOT Contact:
Marlin Lenssen, Project Engineer
(425) 225-8796
E-mail: Lenssmj@wsdot.wa.gov
For more information:
www.wsdot.wa.gov/Projects/SR527/CorridorWiden/132ndSE_112thSE
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