Route 755 was a proposed state highway entirely in the city limits of St. Louis, Missouri, that was never built due to local objections.

Route 755 was partially built,[2] in the form of large flyover ramps between I-44/I-55 and I-64/US 40, which lead to local streets.

These large interchanges have excess right of way, as well as unused pavement segments.

Truman Parkway and long exits to Lafayette Avenue and 20th, Chestnut, Market, and Pine Streets were all that was built of the once proposed and since canceled Route 755.

[2] The ramps from I-64 were closed in February 2020 and removed that winter to make way for a new soccer stadium.