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

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...
...Interstate 55, from the Illinois State Line for less than a 1/4 mile at St. Louis.
...Interstate 64, from the Illinois State Line for less than a 1/4 mile at St. Louis.
...U.S. Rt. 40, from the Illinois State Line for less than a 1/4 mile at St. Louis.

...U.S. Rt. 40, from Wentzville 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.
Info on the New Mississippi River Bridge Project...

Interstates that I-70 crosses in Missouri...
Interstate 55, at Downtown St. Louis.
Interstate 64, at Downtown 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 at I-55/64/U.S. Rt. 40. The left right lanes go to SB I-55 and one mile south I-44. The left lane (ramp) goes to Illinois, via NB I-55/EB I-64/70; U.S. Rt. 40-Poplar Street Bridge.
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.
Interstate 270, at Bridgeton.

A BGS on WB I-70.

WB I-70 near I-270.

WB I-70 at I-270.
Interstate 470, at Independence.
Interstate 435, at Kansas City.
Interstate 670, at Kansas City
Interstate 29, at Kansas City,
Interstate 35, at Kansas City.
Branches of I-70 in Missouri






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.

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

The Poplar Street Bridge looking toward Illinois.

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.

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.

WB I-70 near Cool Valley.

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

EB I-70 in Bridgeton.

A BGS on NB I-270.

A motorist advisory BGS on WB I-270.

Westbound I-70 near the Earth City Expressway at Bridgeton


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.

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

Another lane marker in St. Charles.

A mile marker on WB I-70.

A BGS on Mid-Rivers Mall Drive.

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.

A junction marker on NB MO St Rt 47.

A guide marker on NB MO St Rt 47.
*St. Louis Post-Dispatch; 17 October 2004
**"MoDOT chief backs separate car, truck lanes on I-70" News-Leader 29 June 2006