The above is a collaboration between the American Association of State Highway & Transportation Officials and the Adventure Cycling Association, who have created a transcontinental network of interstate bike routes out of more than 50,000 miles of existing trails. From the Baltimore Sun:
The effort relies on cartography instead of construction, signposts instead of earth-movers.
Working from a bewildering tangle of existing roads, planners mapped a web of corridors where the national bicycle system should go. They considered traffic volume, terrain, amenities and ways to link together lightly traveled byways, secondary roads, urban trails and already established transcontinental bicycle routes.
Each corridor on the map they approved is a broad swath 50 miles wide; the precise routes within each corridor are still to be designated, numbered and given signs.
The plan has been under development for four years now; I'm guessing that the AASHTO and ACA are glad to see the political tide turning the way that it is, since construction responsibilities fall to the states (though I'm guessing that the creators will be working hands on, lobbying hard to see things built, connected, labelled, and otherwise completed). Seeing the above makes the relative unanimity of the newly selected Transpo Secretary Ray LaHood, aka Ray LaWho? as most of the planning media has been calling him lately, seem more worrisome. Does anyone know LaHood's record on bike issues?