Status of AASHTO MASH Implementation – Long Description

The graphs below represent the status of State policies or processes to require that only roadside safety hardware evaluated using AASHTO MASH be used for new or full replacement projects as of the indicated date.

Per the agreement, for contracts on the National Highway System with a letting date after the dates below*, only safety hardware evaluated using the 2016 edition of AASHTO MASH criteria will be allowed for new permanent installations and full replacements.

• December 31, 2017: w-beam barriers and cast-in-place concrete barriers*
• June 30, 2018: w-beam terminals*
• December 31, 2018: cable barriers, cable terminals, and crash cushions*
• December 31, 2019: bridge rails, transitions, all other longitudinal barriers (including portable barriers installer permanently), all other terminals, sign supports, all other breakaway hardware and temporary work zone devices.

*Exceptions and clarifications to the AASHTO/FHWA MASH Implementation Agreement are posted on AASHTO website.

Graph's descriptions:

First pie graph showing Number of states with policy/process for w-beam barriers and cast-in-place concrete barriers by December 31, 2017*; 49: In place, 0: Expected by date, 3: Expected by a later date

Second pie graph showing Number of states with policy/process for w-beam terminals by June 30, 2018*; 49: In place, 0: Expected by date, 3: Expected by a later date

Third pie graph showing Number of states with policy/process for cable barriers, cable terminals, and crash cushions by December 31, 2018*; 39: In place, 0: Expected by date, 13: Expected by a later date

Fourth pie graph showing Number of states with policy/process for bridge rails, transitions, all other longitudinal barriers, all other terminals, sign supports, all other breakaway hardware and temporary work zone devices by December 31, 2019; 16: In place, 29: Expected by date, 7: Expected by a later date.

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