Missouri Route 141
| ||||
|---|---|---|---|---|
| Route information | ||||
| Maintained by MoDOT | ||||
| Length: | 30.902 mi[1] (49.732 km) | |||
| Major junctions | ||||
| South end: |
  US 61 / US 67 in Arnold | |||
 I-55 in Arnold  I-44 / US 50 in Fenton  I-64 / US 40 / US 61 in Town & Country Route 364 in Maryland Heights I-70 in Maryland Heights | ||||
| North end: |
 Route 370 in Bridgeton | |||
| Location | ||||
| Counties: | Jefferson, St. Louis | |||
| Highway system | ||||
| ||||
Highway 141 is a highway located in the western St. Louis metropolitan area. Its northern terminus is at Route 370 in Bridgeton; its southern terminus is at U.S. Route 61/U.S. Route 67 in Arnold, in Jefferson County. The northern stretches of the highway are often referred to as the Maryland Heights Expressway or the Earth City Expressway.
Route description
The section of Route 141 between Interstate 64 and the St. Louis County/Jefferson County line was upgraded to six lanes in a project completed in 2003. The section in Jefferson County is four lanes. For the majority of its duration, 141 is a divided highway with four to eight lanes.
History
As of August, 2012, a new six-lane realignment opened between Ladue Road and Page Avenue (Route 364), with interchanges at Ladue, Olive (Route 340), and Page. The section between Page and Olive (tentatively titled the Page-Olive Connector), which was constructed by St. Louis County has been turned over to the Missouri Department of Transportation and designated as Route 141. Maryland Heights Expressway (the section from Page north to I-70) and Earth City Expressway (the section from I-70 north to its terminus at Route 370) have also been designated as 141. As such, Route 141 now runs from US 61/67 in Arnold to Route 370 in Bridgeton.
Major intersections
| County | Location | mi[1] | km | Destinations | Notes |
|---|---|---|---|---|---|
| Jefferson | Arnold | 0.000 | 0.000 | US 61 / US 67 (Jeffco Boulevard) | Southern terminus at an at-grade intersection |
| 0.379 | 0.610 | I-55 – St. Louis, Cape Girardeau | Hybrid interchange (SPUI and diamond); exit 191 on I-55 | ||
| 3.585 | 5.769 |  Route 21 – St. Louis, Hillsboro | Diamond interchange | ||
| St. Louis | Fenton | 7.583 | 12.204 |  Route 30 – St. Louis, St. Clair | Diamond interchange |
| 11.127 | 17.907 | I-44 / US 50 – St. Louis, Rolla | Exit 272 on I-44 / US 50 | ||
| 11.278 | 18.150 | North Outer Road | Interchange | ||
| Twin Oaks | 13.255 | 21.332 | Big Bend Road | SPUI | |
| Manchester | 15.137 | 24.361 |   Route 100 / Lewis and Clark Trail (Manchester Road) | SPUI | |
| Town & Country | 17.456 | 28.093 | Clayton Road | Interchange | |
| 18.213 | 29.311 | Salt Mill Road / South Outer Forty Drive | Interchange | ||
| 18.665 | 30.038 | I-64 / US 40 / US 61 – St. Louis, Wentzville | Exit 22 on I-64 / US 40 / US 61 | ||
| Chesterfield | 19.974 | 32.145 |  Route AB (Ladue Road) | SPUI | |
| 21.611 | 34.780 |  Route 340 (Olive Boulevard) | SPUI | ||
| Maryland Heights | 23.563 | 37.921 | Route 364 – St. Louis, St. Charles | Exit 17 on Route 364 | |
| 27.983 | 45.034 | I-70 – St. Louis, Kansas City | Cloverleaf interchange; exit 231 on I-70 | ||
| Bridgeton | 29.709 | 47.812 | St. Charles Rock Road | At-grade-intersection | |
| 30.763 | 49.508 | Route 370 – St. Louis, St. Charles | Northern terminus at a diamond interchange; exit 9 on Route 370 | ||
| 30.902 | 49.732 | Missouri Bottom Road north | Continuation beyond northern terminus | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
References
- 1 2 Missouri Department of Transportation (March 19, 2015). Flex Map Viewer (Map). Missouri Department of Transportation. Retrieved March 19, 2015.