SR 20, Oak Harbor North City Limits

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Island County
We are improving more than three miles of State Route 20, from Oak Harbor's north city limit to Frostad Road, to enhance safety and reduce the number and severity of accidents.  This project is still under construction.

A relatively high number of accidents occur on SR 20, particularly those involving intersections and motorists running off the road.  In addition, congestion continues to increase.  To address these problems we are widening the highway, building new passing and turn lanes, and improving guardrail and drainage systems.  We are also regrading side slopes and enhancing lighting to improve driver visibility.

Design:  Construction: Schedule: Cost: Engineers estimate:  $3,827,259 Contract amount:  $3,403,074 Anticipated final payment to contractor: $3,700,000

Construction Summary
We changed few elements of the design during construction.  We made changes to our drainage design to better adapt to field conditions.  Our engineers could not have forseen these changes when they designed the project.     

The contractor, Thomco Construction Inc., continues to complete work in a timely manner.  WSDOT and Thomco are working well together to address and fix problems before they boost the project cost or delay the schedule.

Unfortunately one utility company failed to relocate their power poles before construction started.  As a result, we have been forced to work around the poles.  This delayed our schedule and will increase the cost of the project.  If it weren't for the delay, we would have completed construction early, but now we will finish on time.  The delay increased the project cost by $80,000 to $100,000. 

This project used a lump sum bid item for traffic control (flaggers, barrels, cones, etc.).  Instead of charging an hourly rate for each traffic control occurrence, the contractor provided a single bid, or set price, for all traffic control work on the project.  This provides a clear incentive for contractors to control costs and minimize driver inconvenience during construction. 

Contractor
Thomco Construction Inc. of Lake Stevens, Wa

Contact
David Crisman, Project Engineer
Phone 360-428-1593
E-mail: crismad@wsdot.wa.gov

More information on the SR 20 - Oak Harbor North City Limits project.

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