Colorado DOT
We have revised our microsurfacing, slurry seal, chip seal, double chip seal, and cape seal specifications to get them more in line with the national ISSA standards.
Florida DOT
Effective January 2017, PG 76-22 (ARB) and PG 76-22 (PMA) will be considered equivalent, and it will be the contractor's choice to decide which binder to use for projects requiring a PG 76-22. Currently, PG 76-22 (PMA) is used for higher traffic level roadways and PG 76-22 (ARB) is used in lower traffic roadways.
Montana DOT
We have implemented a binder replacement specification instead of controlling RAP or RAS as a % of the mix. Our longitudinal joint specification now requires 91% theoretical maximum density (TMD), and we are allowing contractors to submit Hamburg mix design results in lieu of verification.
Tennessee DOT
As of June 2016, distributors must be able to spray at a minimum controlled rate of 0.05 gal/SF (previously 0.2). As of July 2016, Jnr (diff) is waived for PG 82-22 and maximum LA Abrasion value has been raised to 40% for OGFC, primarily to allow the use of granite. As of November 2016, an anti-strip agent will be required in all mixes.