The Blanchette Memorial Bridge is a pair of twin cantilever bridges carrying Interstate 70 across the Missouri River between St. Louis County and St. Charles County, Missouri, opened in 1959. At the bridge's crossing, the Missouri River reaches an average depth of about 45 feet.
The Blanchette Memorial Bridge, which carries Interstate 70 over the Missouri River between St. Louis County and St. Charles County, Missouri, was inaugurated in 1959. At its crossing point, the Missouri River has an average depth of approximately 45 feet.