U.S. Route 40 in Missouri
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U.S. Route 40 in the state of Missouri is a U.S. highway that runs from Kansas City to St. Louis. Outside of Greater St. Louis, much of the route either parallels or runs along I-70. East of Wentzvill
One of several interchanges on the Alphabet Loop, located northeast of downtown
The expressway was originally not signed as an Interstate.
Daniel Boone Bridge
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The Daniel Boone Bridge is the name for two bridges carrying Interstate 64, U.S. Route 40, U.S. Route 61 and the Avenue of the Saints across the Missouri River between St. Louis County and St. Charles
U.S. Route 40 in Missouri
…Greater St. Louis area, US 40 leaves I-70 to enter I-64/US 61. US 40, along with I-64 and US 61, then crosses the Missouri River again, this time via the Daniel Boone Bridge. After crossing the river, the freeway serves the Spirit of St. Louis Airport in Chesterfield. At the Frontenac–Ladue line, US 61 leaves the freeway…
The bridge in 2020
The 1989 bridge (left) alongside the original span. A new bridge has since been built to replace the original structure.