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, consisting of two twin cantilever spans, connects Interstate 70 across the Missouri River between St. Louis County and St. Charles County, Missouri, opening in 1959. At this bridge's crossing point, the Missouri River averages about 45 feet in depth.