Roads of the Mid-South & West > Highways of the State of Missouri > State Highways of the State of Missouri > Missouri State Route 340, St. Louis County

Missouri State Route 340
St. Louis County

Missouri State Route 340 runs east-west in the western areas of St. Louis County. In Chesterfield it turns into a north-south highway.

MO St Rt 340 passes through the following towns in St. Louis County.
Ellisville
Clarkson Valley
Ballwin
Chesterfield

Creve Coeur

Olivette
University City

MO St Rt 340 is not multi-plexed in St. Louis County.

MO St Rt 340 intersects the following highways in St. Louis County.

Missouri State Route 100, at Ellisville.
Missouri Secondary State Route HH, at Ellisville.
Interstate 64, at Chesterfield.
U.S. Rt. 40, at Chesterfield.
U.S. Rt. 61, at Chesterfield.
Missouri State Route 141, near Chesterfield.
Interstate 270, at Creve Coeur.

Missouri Secondary State Route JJ, at Creve Coeur.
U.S. Rt. 67, at Creve Coeur.

Interstate 170, at Olivette.


A BGS on SB I-170.

A BGS on NB U.S. Rt. 67.

EB MO St Rt 340 in Creve Coeur.

A BGS on SB I-270.

A BGS on NB I-270.

A BGS on NB I-270.

A BGS on NB MO St Rt 141.

A BGS on WB I-64/U.S. Rt. 40; NB U.S. Rt. 61.

8 August 2019