US State Binder Specifications
The U.S. State Binder Specification Database provides a comprehensive overview of asphalt binder requirements across all 50 state highway agencies. Maintained by the Asphalt Institute, this resource compiles state-specific information on Performance Grade (PG) and PG-Plus specifications in a consistent, easy-to-use format. Each document also includes key notes, specification references, and contact details for further information. Click on the state of interest to download the document.
M320 Specifications
- Standard Specification for Performance-Graded Asphalt Binder
- Includes States still using M320
- Includes States that use MSCR Recovery only as a PG-Plus test
M320 / M332 Specifications
- States that specify M332 for some grades and M320 for other grades
- Includes States that allow substitution of M332 for M320 grades
M332 Specifications
- Standard Specification for Performance-Graded Asphalt Binder Using Multiple Stress Creep Recovery (MSCR) test
- Includes States that have adopted M332 for all grades
- Includes States that have adopted M332 for all grades, but retain the M320 nomenclature
State
Updating
Asphalt Institute will periodically contact the Binder or Materials Engineer listed on the document to review the information for accuracy. Corrections or comments may be emailed to us by using the link below. Changes will only be made after confirmation by the individual listed for that state.
If you have any corrections or comments, please fill out our form for corrections or comments.
Disclaimer
While care has been taken to provide the most accurate and current information, users are warned that there may be inaccuracies and recent revisions may not be reflected. To ensure the most accurate information, the particular state agency should be contacted. In addition, this compilation of information should not infer an Asphalt Institute endorsement for any of the specifications or requirements listed.
The specifications for performance Graded (PG) asphalt binders are given by AASHTO M 320 or ASTM D6373.