Updated July 30, 2021
The Wisconsin Asphalt Bid/Mix Specification Tool was developed as a joint effort by the Wisconsin Department of Transportation (WisDOT) and the Wisconsin Asphalt Pavement Association (WAPA). There are additional mix combinations and specialty mixtures that are not represented in the tool, but are approved mixtures (ie, No. 1 37.5mm mixtures, interlayer mixes, additional binder designations, etc.).
- Use this tool to generate the WisDOT bid item number for each pavement layer.
- Answer questions about the pavement type, traffic classification, binder designation, and aggregate gradation to determine the bid item number.
- You may freely change input parameters to generate different bid item numbers.
- For more information, please see the following resources.
- Asphalt Bid/Mix Specifications - Reference Guide (January 2020 update)
- Asphalt Bid/Mix Specifications - Tear-Off Quick Reference Card (January 2020 update)
- Wisconsin DOT Presentation on Asphalt Bid/Mix Specifications (original October 2015 presentation)
Please contact WAPA if you would like a printed copy of these materials.
State Asphalt Zone (see the state map):
2. Determine the Traffic Volume based on expected ESALs or pavement application. Please click on one of the options below.
Less than 1 million ESALs, generally:
- Residential driveways
- Parking lots
- School and recreational areas
- Bike paths
- Low volume roadways
- Subdivision streets
- Collector streets
- Town roads
- County roads
1 to 8 million ESALs, generally:
- Industrial parking lots
- Loading docks
- Bus stops
- Medium volume roadways
- Arterial streets
- Slow moving traffic
- Town roads
- County roads
More than 8 million ESALs, generally:
- Truck terminals
- Industrial roadways
- Four-lane divided highways
3. Determine Binder Designation based on expected loading and wear. Please click one of the available options.
4. Determine Gradation from allowable aggregate NMAS. Please click one of the available options.
(Refer to Wisconsin DOT’s current Standard Specifications Section 460, Paragraph 460.3.2, “Thickness,” for maximum thickness by layer type.)
You selected mix type .
Gradation “1” = 37.5 mmGradation “2” = 25.0 mmGradation “3” = 19.0 mmGradation “4” = 12.5 mmGradation “5” = 9.5 mm
Traffic Classification “LT” = Low TrafficTraffic Classification “MT” = Medium TrafficTraffic Classification “HT” = High TrafficTraffic Classification “SMA” = Stone Matrix Asphalt alternative
Asphaltic Binder Grade = “58-34” = PG 58-34Asphaltic Binder Grade = “58-28” = PG 58-28
Binder Designation “S” = Standard useBinder Designation “H” = Heavy ModificationBinder Designation “V” = Very Heavy Modification
WISCONSIN DOT BID ITEM
This mix type corresponds with Wisconsin DOT bid item: .