• 2004 Project Highlights
• Evaluation Standards

SR 28, Harrington to Davenport - Paving

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Lincoln County
This project is located between the cities of Harrington and Davenport, in Lincoln County.  WSDOT resurfaced approximately 13 miles of SR 28 in order to preserve and extend the pavement structure. The existing pavement layers in the traveled lanes were recycled in place through a process called Cold-in-Place Recycling.  The recycled pavement then received a full width bituminous surface treatment (BST), or “chip seal”, to provide a wearing course.  In addition, safety improvements included guardrail updates, culvert extensions, new signs, and guideposts.  This work will extend the service life of the roadway 9 years.

Design: Contract Administration: Schedule: Cost: Engineers Estimate: $1,929,238 Contractor's bid amount: $1,577,724 Anticipated final payment to contractor:  $1,520,000

Construction Summary

To reduce the risk of impacts during grain harvest, this contract provided a “must start” date of May 24, 2004, with 55 contract working days.  Poe Asphalt Paving started work on May 17, 2004 with all items of work complete within 46 days. 

The project provided for the rehabilitation of the existing travel lanes by the recycling (Cold-in-Place Recycling) of the existing pavement material in place with a “new” asphalt oil product.  This new product allowed traffic to drive on the surface two hours later at normal traffic speeds.  Traditional recycling processes require longer cure times and extensive piloted traffic control at slow speeds to minimize raveling of the recycled material.  Cold-in-Place Recycling is typically done on low volume roadways.  Once complete, the surface received a BST treatment.

Traffic control for this project was provided primarily through piloted traffic control.  Since this is a low volume roadway and the contractor limited the length of the work zone, delays were minimal.  Pilot cars moved traffic through the work area in a safe manner with no accidents recorded within the project limits.  There were no complaints related to delays, however, some claims, such as paint chips and windshield damage, were received due to the loose gravel associated with the BST operations.

Poe Asphalt Paving and the WSDOT have partnered effectively to proactively deliver a quality project.  There was a strong emphasis on worker safety and workmanship.  Together construction challenges were satisfactorily resolved.  The Cold-in-Place recycling for this project had several areas that failed due to excessive oil or raveling.  Poe Asphalt Paving was very responsive in repairing the areas at no cost to WSDOT. 

The estimated cost for completion is under the contract bid amount.  Poe Asphalt bid the contract 18.29% under the engineers estimate.

Contractor
Poe Asphalt Paving Inc., Lewiston, Idaho

WSDOT Contact
Glenn Wagemann, Project Engineer
WSDOT Eastern Region
Phone: 509-324-6250
Email: wagemag@wsdot.wa.gov

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