Missouri Route 340

Route 340
MO 340 highlighted in red
Route information
Maintained by MoDOT
Length	19.726 mi [1]  (31.746 km)
Major junctions
West end	Route 100 (Manchester Road) in Ellisville
Major intersections	I-64  / US 40  / US 61 in Chesterfield Route 141 in Chesterfield I-270 in Creve Coeur US 67 (Lindbergh Boulevard) in Creve Coeur I-170 in Olivette
East end	Ferguson Avenue in University City
Location
Country	United States
State	Missouri
Highway system
Missouri State Highway System Interstate US State Supplemental
← Route 291 → Route 350

Missouri Route 340 (also called Clarkson Road or Olive Boulevard) is a Missouri state highway in the St. Louis metropolitan area. Its western terminus is Route 100 (Manchester Road) in Ellisville, and its eastern terminus is at an intersection with Ferguson Avenue and Olive Boulevard in University City. The stretch of Route 340 between Manchester Road and the Interstate 64  / U.S. 40  / U.S. 61 interchange is known locally as Clarkson Road. The remainder of Route 340 between this intersection and its eastern terminus is called Olive Boulevard (which does not connect with Olive Street in the city of St. Louis). Route 340 ends at Ferguson Avenue in University City, but Olive Boulevard continues to Skinker Boulevard on the St. Louis city line.

Route description

Mass transit

MetroBus Route 91 (Olive) travels the entirety of the Olive Street Road and Olive Boulevard part of Route 340 from Chesterfield Mall to the Delmar Loop. Part of MetroBus Route 58X (Twin Oaks Express) travels along the entirety of Clarkson Road.

Major intersections

The entire route is in St. Louis County.

Location	mi [1]	km	Destinations	Notes
Ellisville	0.000	0.000	Route 100 (Manchester Road) / Kiefer Creek Road south	Western terminus
Chesterfield	4.130	6.647	Chesterfield Parkway	Interchange
	4.601	7.405	I-64  / US 40  / US 61 (Avenue of the Saints) – Wentzville, St. Louis	Exit 19B on I-64 / US 40 / US 61
	8.942	14.391	Route 141 (Maryland Heights Expressway)	Single point urban interchange
Creve Coeur	11.503	18.512	I-270	Exit 14 on I-270
	13.983	22.503	US 67 (Lindbergh Boulevard)	Cloverleaf interchange
Olivette	16.310	26.248	I-170	Exit 3 on I-170
University City	19.726	31.746	Ferguson Avenue / Olive Boulevard east	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

Template:Attached KML/Missouri Route 340

KML is not from Wikidata

1. Missouri Department of Transportation (March 18, 2015). MoDOT HPMAPS (Map). Missouri Department of Transportation. Retrieved March 18, 2015.