U.S. Federal Route 40 is the main east-west expressway through West County. Recently, Interstate 64 has been extended along this right-of-way from a old ending at Interstate 270.
The December, 19th, 2004 St. Louis Post-Dispatch, said the state highway and transportation department has approved the location for a new bridge over the Missouri River. A new four-lane bridge will built west of the current eastbound bridge, which opened in 1989. It will be many year though until the bridge is built. When completed, the new bridge will carry eastbound traffic. The current eastbound traffic will carry traffic west into St. Charles County. The original bridge at the site, which currently carries westbound traffic, was built in 1937. It will become a ramp from Chesterfield Airport Road to WB I-64/U.S. Rt. 40; NB U.S. Rt. 61. As of now, no money is avalible for the project. The state projects the it to be built near 2012 to 2020. U.S. Rt. 40 passes through the following towns in St. Louis County. Richmond Heights
Ladue
Frontenac
Town and Country
Chesterfield
U.S. Rt. 40 is multi-plexed in St. Louis County. Interstate 64, throughout St. Louis County.
U.S. Rt. 61, from Frontenac to the St. Louis/St. Charles County Line.
U.S. Rt. 40 crosses the following highways in St. Louis County. Interstate 170, at Richmond Heights. U.S. Rt. 61, at Frontenac.
WB I-64/U.S. Rt. 40 at the St. Louis City/St. Louis County Line. WB I-64/U.S. Rt. 40 at Bellevue. WB I-64/U.S. Rt. 40 at Highland. EB I-64/U.S. Rt. 40 in Richmond Heights. EB I-64/U.S. Rt. 40 east of Big Bend. WB I-64/U.S. Rt. 40 at Big Bend. EB I-64/U.S. Rt. 40 at Boland Place. WB I-64/U.S. Rt. 40 at Hanley. EB I-64/U.S. Rt. 40 at Hanley. EB I-64/U.S. Rt. 40 at Hanley. EB I-64 in Richmond Heights just east of I-170. EB I-64/U.S. Rt. 40 at I-170. WB I-64/U.S. Rt. 40 near I-170. WB I-64/U.S. Rt. 40 at I-170. A BGS on a ramp at I-64/170; U.S. Rt. 40. A set of BGS's on SB I-170. A BGS on SB I-170. EB I-64/U.S. Rt. 40 at McCutcheon Ave. EB I-64/U.S. Rt. 40 at Mc Cutcheon. EB I-64/U.S. Rt. 40 at Mc Cutcheon. EB I-64/U.S. Rt. 40 at the Richmond Heights City Limits. EB I-64/U.S. Rt. 40 at the Richmond Heights City Limits. EB I-64/U.S. Rt. 40 at Mc Knight. EB I-64/U.S. Rt. 40 at Mc Knight. EB I-64/U.S. Rt. 40 at Mc Knight. EB I-64/U.S. Rt. 40 west of Mc Knight. EB I-64/U.S. Rt. 40 near Deer Creek. WB I-64/U.S. Rt. 40 near U.S. Rt. 61/67. EB I-64/U.S. Rt. 40 east of U.S. Rt. 61/67. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 at Spoede Road. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 west of Spoede Road. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 near Ballas Road. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 east of I-270. Overhead BGS's on NB I-270. A BGS on SB I-270. A BGS on SB I-270. A BGS on SB I-270. WB I-64/U.S. Rt 40; NB U.S Rt. 61 west of I-270. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 west of I-270. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 near Conway Meadow Drive. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 near Yarmouth Point Drive. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 east of Timberlake Manor Parkway. WB I-64/U.S. Rt. 40; NB U.S. Rt 61 near Timberlake Manor. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 near Mason. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 west of Mason. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 in Town and Country. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 at MO St Rt 141. A BGS on NB MO St Rt 141. A BGS on NB MO St Rt 141. WB I-64/U.S. Rt. 40; SB U.S. Rt. 61 west of MO St Rt 141. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 near Maryville Center. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 near Chesterfield Parkway. A BGS on SB MO St Rt 340. A junction sign on NB MO St Rt 340. A guide marker on NB MO St Rt 340. A BGS on NB MO St Rt 340. WB I-64/U.S. Rt. 40; NB U.S Rt 61 in Chesterfield. A BGS on Chesterfield Parkway West. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 west of Chesterfield Parkway. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 at Boone's Crossing. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 at Boone's Crossing. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 at Boone's Crossing. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 west of Boone's Crossing. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 near the Spirit of St. Louis Airport. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 east of Chesterfield Airport Road. A mile marker near the Boone Bridge. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 near the Missouri River. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 has the older bridge across the Missouri River. There are no shoulders and no passing on the bridge. A closer look at the signs on the bridge. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 crossing the Missouri River. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 at the Boone Bridge. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 at the Boone Bridge. WB I-64/U.S. Rt. 40; NB U.S. Rt. 61 at the Boone Bridge. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 crossing the Missouri River. EB I-64/U.S. Rt. 40; SB U.S. Rt. 61 at the St. Charles/St. Louis County Line.
