Interstate 70, MissouriRoads of the Mid-South & West > Highways of the State of Missouri > Interstate 70, Missouri

Interstate 70

Interstate 70 streches from St. Louis to Kansas City, while in Missouri. The path that I-70 follows, parellels the Missouri River. Although I-70 doesn't go to Jefferson City, it is a common segment on the trip. Also, I-70 is the main link between Downtwon St. Louis and Lambert-St. Louis International Airport. Through the St. Louis Metro Area the proper name for I-70 is the Mark Twain Expressway. Plus, a portion of I-70 runs with the Katy State Trail. This tail runs along the Missouri River from St. Charles, west to Clinton on the old Kansas, Missouri, and Tennessee Railroad Line.

Missouri officals are considoring putting toll booths on the 250-mile highway. This would pay for the cost of re-building the entire highway. Tolls could be as high as $45 for truck roud-trip from St. Louis to Kansas City. It could be $20 for the same round trip for cars.*

The cheif of MoDOT would like to see separate lanes for cars and trucks on I-70 from St. Louis to Kansas City. The project could cost $3.5 billion. It would also require a third lane in each direction. Cars and light vehicles would get two lanes and heavy trucks would get one lane. Several interchanges along the route would have to be re-worked.**

While in Missouri, I-70 is multi-plexed several times.

I-70 is multi-plexed with...

U.S. Rt. 40, from Wentzville to Midway.

...U.S. Rt. 40, from near Boonville to Grain Valley.

...U.S. Rt. 40, from M.P. 7 at Kansas City to the Kansas State Line.

...U.S. Rt. 71, from M.P. 3 to M.P. 1 in Downtown Kansas City.
...Interstate 35, from less than 1 mile through Downtown Kansas City, Mo.
...U.S. Rt. 24, from M.P. 1 to the Kansas State Line.

...U.S. Rt. 169, from M.P. 1 to the Kansas State Line.


Info on the New Mississippi River Bridge Project...

Photos from the former section of I-70 in Downtown St. Louis.

BGS on the Poplar Street Bridge.

Looking at the Poplar Street Bridge at Downtown St. Louis. The bridge is the the grayish line in front of the truss bridge. This bridge is maintained by the State of Missouri. Photo taken from the East Riverfront Metrolink Station.

SB I-55; WB I-64/70; U.S. Rt. 40 at the St. Louis City Limits on the PSB.

The Missouri Welcome Sign on the PSB.

The Missouri Welcome sign on the Poplar Street Bridge-SB I-55; WB I-64/70 U.S. Rt. 40. (September, 2010)

SB I-55; WB I-64/70; U.S. Rt. 40 at the westend of the PSB.

The Poplar Street Bridge looking toward Illinois.

Looking north at the Poplar Street Bridge from the Mac Arthur Bridge.

A single lane section of WB I-70 in Downtown St. Louis.

Looking east at the Poplar Street Bridge complex from a overlook at Busch Stadium. (August, 2006)

A guide marker in Downtown St. Louis.

WB I-70 in Downtown St. Louis.

EB I-70 at M.P. 250 in Downtown St. Louis.

WB I-70 at the Edward Jones Dome.

WB I-70 at the entrance to the expresslanes north of Downtown St. Louis.

The sign is dedicating I-70 at Mark McGwire Highway. Photo on WB I-70 in St. Louis.

WB I-70 near Madison in St. Louis.

SB I-55; WB I-64/70; U.S. Rt. 40 near their split in Downtown St. Louis.

SB I-55; WB I-64/70; U.S. Rt. 40 at WB I-70.

EB I-70 two miles from I-55/64.

EB I-70 near I-55/64.

EB I-70 at Pine Street in Downtown St. Louis.

EB I-70 at SB I-55.


Interstates that I-70 crosses in Missouri...


Interstate 44, at Downtown St. Louis.

EB I-70 two miles from I-70. (July, 2014)

EB I-70 under one mile from I-44. (July, 2014)

EB I-70 near I-44. (July, 2014)

EB I-70 at I-44. (July, 2014)
Interstate 170, at Berkeley.

The first BGS on WB I-70.

Another BGS on WB I-70.

A BGS for SB I-170 on WB I-70.

WB I-70 at SB I-170.

WB I-70 at NB I-170.

EB I-70 two miles from I-170.

A BGS on EB I-70 one mile from I-170.

EB I-70 at NB I-170.
Interstate 270, at Bridgeton.

A BGS on WB I-70.

WB I-70 near I-270.

WB I-70 at I-270.

EB I-70 just over two miles from I-270.

EB I-70 one mile from I-270.

EB I-70 near I-270.

EB I-70 near I-270.

EB I-70 at I-270.

Interstate 64, at Wentzville.

A BGS on WB I-70 two miles from the interchange. (June, 2010)

A BGS on WB I-70.

WB I-70 at the first exit of the interchange. (June, 2010)

WB I-70 at I-64. (June, 2010)

The first BGS on EB I-70/U.S. Rt. 40 for I-64; U.S. Rt. 40/61.

EB I-70/U.S. Rt. 40 near I-64; U.S. Rt. 40/61.

EB I-70 at I-64; U.S. Rt. 40/61.

Interstate 470, at Independence.

A BGS on WB I-70 two miles from I-470.

A BGS one mile from I-470.

WB I-70 near I-470.

EB I-70 near I-470.

EB I-70 at I-470.
Interstate 435, at Kansas City.

EB I-70 one mile from I-435.

EB I-70 less than a mile from I-435.

EB I-70 near I-435.

EB I-70 at I-435.

WB I-70 a half mile from I-435.

WB I-70 at north I-435.

WB I-70 at south I-435.
Interstate 670, at Kansas City

EB I-70/U.S. Rt. 40; SB U.S. Rt. 40 near I-670.

EB I-70/U.S. Rt. 40; SB U.S. Rt. 40 at I-670.

WB I-70 two miles from I-670.

WB I-70 one mile from I-670.

WB I-70 near I-670.

WB I-70 at I-670.
Interstate 29, at Kansas City,
Interstate 35, at Kansas City.

NB I-35; EB I-70/U.S. Rt. 24-40 a half mile from north I-29/35.

NB I-35; EB I-70/U.S. Rt. 24-40 near north I-29/35.

Overhead signs on NB I-35; EB I-70/U.S. Rt. 24-40 just before north I-29/35.

NB I-35; EB I-70/U.S. Rt. 24-40 at north I-29/35.

WB I-70/U.S. Rt. 40; NB U.S. Rt. 71 under one mile from I-29/35.

WB I-70/U.S. Rt. 40; NB U.S. Rt. 71 near I-29/35.

WB I-70/U.S. Rt. 40; NB U.S. Rt. 71 under one mile from I-29/35.
Interstate 35, at Kansas City.

SB I-35; WB I-70/U.S. Rt. 24-40 a half mile from where I-35 head south.

SB I-35; WB I-70/U.S. Rt. 24-40 near the I-35 south interchange.

SB I-35/U.S. Rt. 169; WB I-70/U.S. Rt. 24-40 at south I-35.


Branches of I-70 in Missouri



WB I-70 at the Missouri/Illinois State Line.

EB I-70 near the Illinois State Line.

EB I-70 on the Stan Musual Veterans Bridge.

EB I-70 at the Stan Musual Veterans Bridge.

WB I-70 at the Missouri Welcome Sign.

EB I-70 at Tucker Blvd.

A guide marker at MO 115 in St. Louis.

A guide marker on MO St Rt 115.

EB I-70 at Salisbury.

EB I-70 at Salisbury.

WB I-70 near Grand.

WB I-70 near Adelaide.

A guide marker in North St. Louis.

A guide marker on SB MO St Rt 367 in St. Louis.

WB I-70 near Cool Valley.

WB I-70 near Lambert-St. Louis International Airport.

EB I-70 in Bridgeton.

A guide marker near Lambert-St. Louis International Airport.

WB I-70 near Bridgeton.

A BGS on NB I-270.

A motorist advisory BGS on WB I-270.

WB I-70 near the Earth City Expressway at Bridgeton

WB I-70 west of the Earth City Expressway.

WB I-70 east of the Missouri River.

WB I-70 at the eastside of the Missouri River.

Westbound I-70 at the Blanchette Bridge over the Missouri River at St. Charles.

Westbound I-70 crossing the Missouri River on the Blanchette Bridge at St. Charles.

WB I-70 at the St. Louis/St. Charles County Line.

WB I-70 at 5th in St. Charles.

WB I-70 west of 5th in St. Charles.

A lane marker on MO St Rt 94 in St. Charles.

Another lane marker in St. Charles.

WB I-70 at MO St Rt 94.

WB I-70 west of MO St Rt 94.

WB I-70 east of Zumbehl.

A mile marker on WB I-70.

WB I-70 west of Zumbehl.

WB I-70 east of Cave Springs.

WB I-70 at Cave Springs.

WB I-70 west of Cave Springs.

WB I-70 at Spencer.

A BGS on Mid-Rivers Mall Drive.

WB I-70 west of Mid-Rivers Mall Drive.

A BGS on WB I-70.


A guide marker on MO St Rt 79.
Photo from: Paul Dienhart


A BGS for WB I-70 in St. Peters.

WB I-70 west of MO St Rt 79.

A junction marker in O'Fallon.

A set of guide markers in O'Fallon.

WB I-70 west of MO Sec St Rt K/M.

EB I-70 near Lake St. Louis.

A junction marker on WB U.S. Rt. 40/NB U.S. Rt. 61.

A overhead sign on EB I-70.

EB I-70/U.S. Rt. 40 in Wentzville.

A guide BGS in Wentzville.

Another guide BGS in Wentzville.

WB I-70/U.S. Rt. 40 at the St. Charles/Warren County Line.

WB I-70/U.S. Rt. 40 east of Wright City.

WB I-70/U.S. Rt. 40 in Wright City.

WB I-70/U.S. Rt. 40 at Warrenton.

A junction marker on NB MO St Rt 47.

A guide marker on NB MO St Rt 47.

WB I-70/U.S. Rt. 40 near Pendleton.

WB I-70/U.S. Rt. 40 at the Montgomery/Warren County Line.

WB I-70/U.S. Rt. 40 near the Loutre River.

WB I-70/U.S. Rt. 40 at the Callaway/Montgomery County Line.

WB I-70/U.S. Rt. 40 east of Kingdom City.

A BGS on EB MO Sec St Rt F.

A junction marker on NB U.S. Rt. 54.

A BGS on EB U.S. Rt. 54.

A set of guide markers on EB U.S. Rt. 54.

WB I-70/U.S. Rt. 40 east of Columbia.

A BGS on SB U.S. Rt. 63.

A junction marker on SB U.S. Rt. 63.

A BGS on EB MO Sec St Rt AC.

A guide marker on SB U.S. Rt. 63.

A set of BGS's on NB U.S. Rt. 63.

EB I-70/U.S. Rt. 40 at BUSN Loop I-70, near U.S. Rt. 63.

A set of guide markers on SB MO St Rt 763 in Columbia.

A guide marker on NB MO St Rt 763.

A BGS on NB MO St Rt 763.

EB I-70/U.S. Rt. 40 at MO St Rt 163.

A guide marker on NB MO St Rt 163 in Columbia.

A guide marker on NB MO St Rt 163 at I-70/U.S. Rt. 40.

A BGS on BUSN Loop I-70.

A set of guide markers on EB MO St Rt 740.

A guide marker on NB MO Sec St Rt E.

WB I-70/U.S. Rt. 40 west of Columbia.

WB I-70 east of the Missouri River, near Rocheport.

WB I-70 near the Missouri River going through cut rock.

WB I-70 at the Missouri River.

WB I-70 crossing the Missouri River.

A guide marker on WB BUSN Loop I-70/U.S. Rt. 40; SB MO St Rt 5, near Boonville.

A guide marker on NB MO St Rt 5.

EB I-70/U.S. Rt. 40 near the Copper/Saline County Line.

EB I-70/U.S. Rt. 40 near U.S. Rt. 65.

EB I-70/U.S. Rt. 40 near MO Sec St Rt YY.

EB I-70/U.S. Rt. 40 near Concordia.

EB I-70/U.S. Rt. 40 near MO St Rt 13.

EB I-70/U.S. Rt. 40 at Odessa.

A junction marker on SB MO St Rt 131.

A junction marker on NB MO St Rt 131.

EB I-70/U.S. Rt. 40 near Odessa.

WB I-70/U.S. Rt. 40 near Oak Grove.

EB I-70/U.S. Rt. 40 near Bates City.

WB I-70 in Independence.

A guide marker in Independence.

EB I-70 near Noland Road in Independence.

WB I-70 near Stadium in Kansas City.

WB I-70/U.S. Rt. 40 near Jackson in Kansas City.

EB I-70/U.S. Rt. 40 near 23rd in Kansas City.

EB I-70/U.S. Rt. 40 at SB U.S. Rt. 71 in Kansas City.

A BGS on NB I-35.
Photo from: Paul Dienhart


*St. Louis Post-Dispatch; 17 October 2004
**"MoDOT chief backs separate car, truck lanes on I-70" News-Leader 29 June 2006


1 August 2015