Missouri Route 141

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Route 141 marker

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
Route 139 Route 142

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[edit]

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[edit]

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[edit]

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[edit]

  1. ^ a b Missouri Department of Transportation (March 19, 2015). Flex Map Viewer (Map). Missouri Department of Transportation. Retrieved March 19, 2015.