"The American Association of State Highway and Transportation Officials (AASHTO) approved six new routes in June and released an ambitious new map in partnership with the Adventure Cycling Association that traces routes that would join the contiguous 48 states and carve out routes in Alaska and Hawaii.
The new routes - one linking Maine and New Hampshire, another across the mitten of Michigan and four routes in Alaska - are the first to be approved in 30 years."
The program was launched in 1976, but has struggle to proceed.