Delete your browsing history or temporary internet files (directions for Windows and Internet Explorer) to see the most current version of this page. The information is updated frequently, however there is no set schedule.
The reference cost posted is for the period immediately preceding the bid opening date.
Asphalt binder reference costs get posted at the end of the period.
| Date Effective | Begin Period | End Period | Eastern | Western |
|---|
| 4/1/2013 |
3/16/2013 |
3/31/2013 |
$570.00 |
$545.00 |
| 3/19/2013 |
3/1/2013 |
3/15/2013 |
$570.00 |
$545.00 |
| 2/25/2013 |
2/16/2013 |
2/28/2013 |
$570.00 |
$545.00 |
| 2/19/2013 |
2/1/2013 |
2/15/2013 |
$568.33 |
$550.83 |
| 1/28/2013 |
1/16/2013 |
1/31/2013 |
$567.50 |
$560.00 |
| 1/14/2013 |
1/1/2013 |
1/15/2013 |
$567.50 |
$565.00 |
| 1/7/2013 |
12/16/2012 |
12/31/2012 |
$567.50 |
$570.00 |
| 12/17/2012 |
12/1/2012 |
12/15/2012 |
$567.50 |
$570.00 |
| 12/3/2012 |
11/16/2012 |
11/30/2012 |
$569.17 |
$570.00 |
| 11/13/2012 |
11/1/2012 |
11/15/2012 |
$580.00 |
$570.00 |
| 10/29/2012 |
10/16/2012 |
10/31/2012 |
$602.50 |
$570.00 |
| 10/15/2012 |
10/1/2012 |
10/15/2012 |
$605.00 |
$570.00 |
| 10/1/2012 |
9/16/2012 |
9/30/2012 |
$605.00 |
$570.00 |
| 9/17/2012 |
9/1/2012 |
9/15/2012 |
$605.00 |
$595.00 |
| 9/4/2012 |
8/16/2012 |
8/31/2012 |
$610.83 |
$598.33 |
| 8/14/2012 |
8/1/2012 |
8/15/2012 |
$607.50 |
$612.50 |
| 7/30/2012 |
7/16/2012 |
7/31/2012 |
$633.75 |
$612.50 |
| 7/16/2012 |
7/1/2012 |
7/15/2012 |
$635.00 |
$617.50 |
| 7/2/2012 |
6/16/2012 |
6/30/2012 |
$635.00 |
$622.50 |
| 6/19/2012 |
6/1/2012 |
6/15/2012 |
$634.17 |
$619.17 |
| 5/14/2012 |
5/1/2012 |
5/15/2012 |
$618.75 |
$612.50 |
| 5/29/2012 |
5/16/2012 |
5/31/2012 |
$631.25 |
$612.50 |
| n/a |
4/1/2012 |
4/15/2012 |
$607.50 |
$602.50 |
| 5/2/2012 |
4/16/2012 |
4/30/2012 |
$612.50 |
$612.50 |
| n/a |
3/1/2012 |
3/15/2012 |
$562.50 |
$591.25 |
| n/a |
3/16/2012 |
3/31/2012 |
$582.50 |
$595.00 |
| n/a |
2/1/2012 |
2/15/2012 |
$555.00 |
$566.25 |
| n/a |
2/16/2012 |
2/29/2012 |
$555.00 |
$570.00 |
| n/a |
1/1/2012 |
1/15/2012 |
$547.50 |
$553.75 |
| n/a |
1/16/2012 |
1/31/2012 |
$550.00 |
$557.50 |
| n/a |
12/1/2011 |
12/15/2011 |
$547.50 |
$528.75 |
| n/a |
12/16/2011 |
12/31/2011 |
$547.50 |
$534.17 |
| n/a |
11/1/2011 |
11/15/2011 |
$552.50 |
$531.25 |
| n/a |
11/16/2011 |
11/30/2011 |
$547.50 |
$525.00 |
| n/a |
10/1/2011 |
10/15/2011 |
$595.00 |
$545.00 |
| n/a |
10/16/2011 |
10/31/2011 |
$558.75 |
$538.75 |
| n/a |
9/1/2011 |
9/15/2011 |
$637.50 |
$550.00 |
| n/a |
9/16/2011 |
9/30/2011 |
$600.83 |
$548.33 |
| n/a |
8/1/2011 |
8/15/2011 |
$637.50 |
$555.00 |
| n/a |
8/16/2011 |
8/31/2011 |
$637.50 |
$555.00 |
| n/a |
7/1/2011 |
7/15/2011 |
$613.33 |
$537.50 |
| n/a |
7/16/2011 |
7/31/2011 |
$625.00 |
$544.17 |
| n/a |
6/1/2011 |
6/15/2011 |
$576.25 |
$537.50 |
| n/a |
6/16/2011 |
6/30/2011 |
$590.00 |
$537.50 |
| n/a |
5/1/2011 |
5/15/2011 |
$537.50 |
$515.00 |
| n/a |
5/16/2011 |
5/31/2011 |
$550.00 |
$537.50 |
| n/a |
4/1/2011 |
4/15/2011 |
$516.67 |
$487.50 |
| n/a |
4/16/2011 |
4/30/2011 |
$525.00 |
$490.00 |
| n/a |
3/1/2011 |
3/15/2011 |
$487.50 |
$466.25 |
| n/a |
3/16/2011 |
3/31/2011 |
$490.00 |
$480.00 |
| n/a |
2/1/2011 |
2/15/2011 |
$475.00 |
$455.00 |
| n/a |
2/16/2011 |
2/28/2011 |
$475.00 |
$460.00 |
| n/a |
1/1/2011 |
1/15/2011 |
$475.00 |
$455.00 |
| n/a |
1/16/2011 |
1/31/2011 |
$475.00 |
$455.00 |
| n/a |
12/1/2010 |
12/15/2010 |
$475.00 |
$442.50 |
| n/a |
12/16/2010 |
12/31/2010 |
$475.00 |
$450.00 |
| n/a |
11/1/2010 |
11/15/2010 |
$475.00 |
$442.50 |
| n/a |
11/16/2010 |
11/30/2010 |
$475.00 |
$442.50 |
| n/a |
10/1/2010 |
10/15/2010 |
$480.83 |
$440.83 |
| n/a |
10/16/2010 |
10/31/2010 |
$477.50 |
$442.50 |
| n/a |
9/1/2010 |
9/15/2010 |
$497.50 |
$443.75 |
| n/a |
9/16/2010 |
9/30/2010 |
$488.75 |
$433.75 |
| n/a |
8/1/2010 |
8/15/2010 |
$510.00 |
$491.25 |
| n/a |
8/16/2010 |
8/31/2010 |
$510.00 |
$478.75 |
| n/a |
7/1/2010 |
7/15/2010 |
$517.50 |
$495.00 |
| n/a |
7/16/2010 |
7/31/2010 |
$512.50 |
$495.00 |
| n/a |
6/1/2010 |
6/15/2010 |
$527.50 |
$495.00 |
| n/a |
6/16/2010 |
6/30/2010 |
$525.00 |
$495.00 |
| n/a |
5/1/2010 |
5/15/2010 |
$530.00 |
$493.75 |
| n/a |
5/16/2010 |
5/31/2010 |
$530.00 |
$495.00 |
| n/a |
4/1/2010 |
4/15/2010 |
$500.00 |
$487.50 |
| n/a |
4/16/2010 |
4/30/2010 |
$513.33 |
$492.50 |
| n/a |
3/1/2010 |
3/15/2010 |
$500.00 |
$475.00 |
| n/a |
3/16/2010 |
3/31/2010 |
$500.00 |
$475.00 |
| n/a |
2/1/2010 |
2/15/2010 |
$500.00 |
$456.25 |
| n/a |
2/16/2010 |
2/28/2010 |
$500.00 |
$475.00 |
| n/a |
1/1/2010 |
1/15/2010 |
$491.67 |
$445.00 |
| n/a |
1/16/2010 |
1/31/2010 |
$500.00 |
$445.00 |
| n/a |
12/1/2009 |
12/15/2009 |
$470.00 |
$445.00 |
| n/a |
12/16/2009 |
12/31/2009 |
$487.50 |
$445.00 |
| n/a |
11/1/2009 |
11/15/2009 |
$470.00 |
$437.50 |
| n/a |
11/16/2009 |
11/30/2009 |
$470.00 |
$437.50 |
| n/a |
10/1/2009 |
10/15/2009 |
$500.00 |
$437.50 |
| n/a |
10/16/2009 |
10/31/2009 |
$487.50 |
$437.50 |
| n/a |
9/1/2009 |
9/15/2009 |
$512.50 |
$438.75 |
| n/a |
9/16/2009 |
9/30/2009 |
$512.50 |
$437.50 |
| n/a |
8/1/2009 |
8/15/2009 |
$512.50 |
$455.00 |
| n/a |
8/16/2009 |
8/31/2009 |
$512.50 |
$455.00 |
| n/a |
7/1/2009 |
7/15/2009 |
$512.50 |
$455.00 |
| n/a |
7/16/2009 |
7/31/2009 |
$512.50 |
$455.00 |
| n/a |
6/1/2009 |
6/15/2009 |
$512.50 |
$450.00 |
| n/a |
6/16/2009 |
6/30/2009 |
$512.50 |
$450.00 |
| n/a |
5/1/2009 |
5/15/2009 |
$534.17 |
$445.00 |
| n/a |
5/16/2009 |
5/31//2009 |
$512.50 |
$440.00 |
| n/a |
4/1/2009 |
4/15/2009 |
$562.50 |
$450.00 |
| n/a |
4/16/2009 |
4/31/2009 |
$537.50 |
$445.00 |
| n/a |
3/1/2009 |
3/15/2009 |
$562.50 |
$455.00 |
| n/a |
3/16/2009 |
3/31/2009 |
$562.50 |
$455.00 |
| n/a |
2/1/2009 |
2/15/2009 |
$562.50 |
$487.50 |
| n/a |
2/16/2009 |
2/28/2009 |
$562.50 |
$487.50 |
| n/a |
1/1/2009 |
1/15/2009 |
$562.50 |
$495.00 |
| n/a |
1/16/2009 |
1/31/2009 |
$562.50 |
$492.50 |
| n/a |
12/1/2008 |
12/15/2008 |
$587.50 |
$495.00 |
| n/a |
12/16/2008 |
12/31/2008 |
$587.50 |
$495.00 |
| n/a |
11/1/2008 |
11/15/2008 |
$606.25 |
$543.75 |
| n/a |
11/16/2008 |
11/30/2008 |
$587.50 |
$495.00 |
| n/a |
10/1/2008 |
10/15/2008 |
$800.00 |
$655.00 |
| n/a |
10/16/2008 |
10/31/2008 |
$712.50 |
$583.33 |
| n/a |
9/1/2008 |
9/15/2008 |
$862.50 |
$731.25 |
| n/a |
9/16/2008 |
9/30/2008 |
$856.25 |
$687.50 |
The asphalt binder reference cost is established by WSDOT from the selling price of asphalt cement furnished by Poten and Partners, Inc. for the Pacific Northwest:
- Western reference cost is based on the selling price for the Seattle, Washington area
- Eastern reference cost is based on the selling price for the eastern Washington area including northern Idaho
The asphalt binder reference cost will be the average of the selling price for each Friday during the specified period.