- Detroit
- Massachusetts Bay Transportation Authority
- List of former state routes in New York (401–500)
- List of former state routes in New York
- List of county routes in Onondaga County, New York
- List of county routes in Chenango County, New York
- List of highways numbered 401
- Ontario Highway 401
- List of county routes in Erie County, New York
- New York City
- List of highways numbered 66
- List of state routes in Pennsylvania
