Missouri Route 340

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Route 340
Maintained by MoDOT
Length:	19 mi (31 km)
East end:	University City
West end:	Ellisville
Major cities:	University City Olivette Creve Coeur Chesterfield Ballwin Clarkson Valley Ellisville
Missouri Highways < Route 291 Route 350 > Supplemental

Highway 340 is a highway in the St. Louis metropolitan area. Its eastern terminus is at Ferguson Ave. in University City and its western terminus is at Route 100 Manchester Rd. in Ellisville. The stretch of Highway 340 between Manchester Blvd. and I-64/US 40 is locally known as Clarkson Rd. The remainder of Highway 340 between this intersection and its eastern terminus is variously known as Olive Blvd. and Olive Street Rd.

Junction list

County	Location	Mile[1]	Roads intersected	Notes
St. Louis	Ellisville	0.0	Route 100	Western terminus
	Clarkson Valley	0.8	Route HH
	Chesterfield	4.1	Chesterfield Pkwy. S.	Interchange
		4.6	I-64/US 40/61	Diamond interchange
		8.6	Route 141	Northern terminus of Route 141
	Creve Coeur	11.5	I-270	SPUI
		14.0	US 67	Cloverleaf interchange
	Olivette	16.3	I-170	Interchange
	University City	19.2	Ferguson Ave.	Eastern terminus

References