Welcome to NASTO
The Northeast Association of
State Transportation Officials
(NASTO) brings together
representatives from state
transportation departments of
the Northeastern United States
and the Canadian provinces of
Ontario and Quebec.
Our Leadership
NASTO President William Cass, PE
Commissioner, New Hampshire Department of Transportation
Bill Cass was appointed Commissioner in December of 2022. He joined the NHDOT in 1986 and has 37 years of experience with the NHDOT. Prior to that, Bill served for 7 years as the Department’s Assistant Commissioner and Chief Engineer for the Department.
Bill has many years of engineering; project development and management experience and his leadership is a key component to the success of the Department.