Asphalt Cost Adjustment
The Asphalt Binder Reference Costs for Eastern and
Western Washington are established by WSDOT using the average of
the current price of asphalt cement furnished by Poten and Partners,
Inc. for the Pacific Northwest. The Western average is based on
Poten and Partners, Inc’s weekly average for the Seattle, Washington
area. The Eastern average is based on Poten and Partners, Inc’s
weekly average for the Eastern Washington area including Northern
Idaho. The Asphalt Binder Reference Costs for the 1st - 15th will
be the average of weekly prices with a week ending date prior to
the 16th day of the month. The Asphalt Binder Reference Costs for
the 16th through the end of the month will be the average of any
weekly prices with a week ending date on or after the 16th day of
the month and prior to the 1st day of the following month. If weekly
price information ceases to be available from Poten and Partner’s,
Inc., WSDOT will select and begin using a substitute price source
or index to establish the Asphalt Binder Reference Costs at its
discretion.
Projects in Northwest, Olympic and Southwest regions use the Western
Reference Cost with the exception of Klickitat County which will
use the Eastern Reference Cost.
Projects in North Central, Eastern and South Central use the Eastern
Reference Cost.
The Western area includes Clallam, Clark, Cowlitz, Grays harbor,
Island, Jefferson, King, Kitsap, Lewis, Mason, Pacific, Pierce,
San Juan, Skagit, Skamania, Snohomish, Thurston, Wahkiakum, and
Whatcom Counties.
The Eastern area includes Adams, Asotin, Benton, Chelan, Columbia,
Douglas, Ferry, Franklin, Garfield, Grant, Kittitas, Klickitat,
Lincoln, Okanogan, Pend Oreille, Spokane, Stevens, Walla Walla,
Whitman and Yakima Counties.
*A project spanning Eastern and Western counties will use the reference
cost of the county that the majority of the work will take place
in.
New Asphalt Binder Reference Costs
for Eastern and Western Washington (pdf 19 kb)
Project Delivery Memo: New
Asphalt Cost Adjustment General Special Provision (pdf 182 kb)
Old Asphalt Binder Monthly
Cost Index: Eastern and Western Washington (pdf 23 kb)
Old
Asphalt Cost Adjustment General Special Provision (pdf 13 kb)
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Fuel Cost Adjustment The
Fuel Adjustment is based on the monthly On-Highway Diesel Fuel price
for West Coast No. 2 Diesel Retail Sales by All Sellers provided
by the Energy Information Administration (Department of Energy).
If monthly price information ceases to be available from the Energy
Information Administration, WSDOT will select and begin using a
substitute price source or index to establish the monthly average
fuel price at is discretion.
Energy
Information Administration West Coast No. 2 Diesel Monthly Fuel
Price (xls 177 kb)
Fuel
Cost Adjustment GSP (pdf 20 kb)
Directions for using Fuel Cost
Price Adjustment (pdf 20 kb)
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