The National
Road, America's first interstate highway, was constructed in Indiana
between 1829 and 1834 and provided the primary gateway to western
settlement. Nicknamed the "Main Street of America",
as many as 200 wagons per day passed through the small towns which
sprang up along its route.
The National
Road is a National Scenic Byway, and was designated as a state scenic
route in 1996 and a nationally recognized All-American Road in 2003. Most
of the original route has become US40, although older alignments are
visible or navigable in several locations.
The Indiana
National Road Association, supported by the Historic
Landmarks, was formed in 1994 and is a partner of the National
Road Heritage Trail project.
The National
Road Heritage Trail will closely follow the alignment of the National
Road with the exception of western Putnam and Clay Counties. Historic
sites along the road will be accessible to the trail and portions
may be upgraded to include bicycle accommodations.