Missouri State Route 30 is a east-west highway in Southern St. Louis County. It runs from the St. Louis City Limits to the St. Louis/Jefferson County Line. MO St Rt 30 passes through the following towns in St. Louis County. Grantwood Village Sunset Hills
Fenton
MO St Rt 30 is not multi-plexed in St. Louis County. MO St Rt 30 intersects the following highways in St. Louis County. Missouri Secondary State Route P, near Wilbur Park.
WB MO St Rt 30 west of I-270. A BGS on NB I-270. A BGS on NB I-270. A BGS on SB I-270. NB MO St Rt 30 near Sappington Barracks Road. NB MO St Rt 30 south of U.S. Rt. 50/61/67. NB MO St Rt 30 near Musick Ave. NB MO St Rt 30 near MO St Rt 21. NB MO St Rt 30 near MacKenzie Road. NB MO St Rt 30 near Weber Road. NB MO St Rt 30 at Siebert Ave.