Missouri Route 370
|Length||12.957 mi (20.852 km)|
|West end||I-70 in St. Peters|
| Route 94 in St. Charles|
Route 141 in Bridgeton
|East end||I-270 in Bridgeton|
This section needs expansion. You can help by adding to it. (June 2008)
Route 370 was considered to be Interstate 370 but AASHTO would only allow it if it was renumbered Interstate 870. MODOT did not want this because the designation of Interstate 870 was for the new southern freeway which is now designated as Interstate 255.
On December 16, 1992, the first section of the highway opened allowing direct access to St. Charles at Route 94 from I-270. It replaced the crumbling Old St. Charles Bridge that carried Route 115 traffic. On April 1, 1993, the road was designated as Route 370. In 1993, the Great Flood of 1993 surrounded much of the highway which is built on top of an embankment. As the flood waters surrounded the highway, many of the new exits had been shut down because the roads it connected to were underwater. Despite the flood, construction resumed on the highway until it was completed in 1996.
|St. Charles||St. Peters||0.000–|
|1||I-70 – St. Louis, Kansas City||Western terminus; signed as exits 1A (east) and 1B (west)|
|1C||Salt River Road||Westbound exit and eastbound entrance|
|2.687||4.324||2||Truman Boulevard / Lakeside Park Drive|
|St. Charles||5.110||8.224||5||Elm Street / New Town Boulevard|
|7.882||12.685||7||Route 94 / Lewis and Clark Trail (North 3rd Street)|
|Missouri River||8.454||13.605||Discovery Bridge|
|St. Louis||Bridgeton||9.363||15.068||9||Route 141 south (Earth City Expressway)||Northern terminus of Route 141|
|11.632||18.720||11||St. Louis Mills Boulevard|
|12.343||19.864||12A||I-270 north – Chicago, IL||Eastbound exit and westbound entrance|
|12.596||20.271||12B||Missouri Bottom Road||Eastbound exit and westbound entrance|
|12.957||20.852||12C||I-270 south – Memphis, TN||Eastern terminus|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Missouri Department of Transportation (December 26, 2013). MoDOT HPMAPS (Map). Missouri Department of Transportation. Retrieved December 26, 2013.
- Google (December 22, 2012). "Missouri Route 370" (Map). Google Maps. Google. Retrieved December 22, 2012.
- "Interstate-Guide: Interstate 370 Missouri". Retrieved 2017-01-30.