Interstate 70 in Missouri
|Maintained by MoDOT|
|Length:||250.063 mi (402.437 km)|
|Existed:||1956 – present|
|West end:||I‑70 / US-24 / US-40 / US-169 at Kansas state line|
|East end:||I-70 at Illinois state line|
In the U.S. state of Missouri, Interstate 70 (I-70) is generally parallel to the Missouri River. This section of the transcontinental Interstate begins at the Kansas state line on the Lewis and Clark Viaduct, concurrent with U.S. Routes 24, 40, and 169, and the east end is on the Stan Musial Veterans Memorial Bridge in St. Louis.
While passing through Kansas City, I-70 is known as the "George Brett Super Highway", named after the former third baseman of the Kansas City Royals who is a member of the Baseball Hall of Fame. The Truman Sports Complex, which houses the Royals' and Chiefs' stadiums, is located along I-70 at I-435.
Beginning on the Lewis and Clark Viaduct, I-70 immediately encounters the Alphabet Loop, a small but complex loop of freeways with all of its exits having a number of 2 and a letter suffix that uses the entire alphabet (except I, O, and Z). I-35 becomes concurrent with I-70 as soon as the highway gets into the Loop, and maintain the concurrency until the northeastern corner of the Loop. Back at the northwest corner, US 169 splits off to the north, leaving four routes concurrent with each other. There is a large interchange with Route 9 as the Loop reaches the northeastern corner. When it does reach the corner, US 24 splits to the east, I-29 ends, and US 71 joins.
After that, the freeway turns south, with interchanges to more roads. At the southeastern end, I-70/US 40/US 71 exit the Loop, where I-70/US 40 split off to the east and US 71 continues south. I-670 ends where I-70/US 40 usurp the alignment. Soon after usurpation, I-70/US 40 turn southeast, and at exit 7A, US 40 departs from I-70. Soon after that, I-70 interchanges with I-435, the beltway around Kansas City.
Independence to Wentzville
East of I-435, I-70 continues east through Independence, passing a busy cloverleaf interchange at I-470. The highway then continues with six lanes to the rapidly growing suburb of Blue Springs, where the roadway narrows to four lanes (two each direction) at Route 7. I-70 remains at this width until just west of the intersection with I-64/US 40/US 61 in Wentzville, over 170 miles (270 km) away.
East of Blue Springs, I-70 takes on a rural highway as it leaves Jackson County. The highway remains this way for the next 100 miles (160 km), going through gently rolling terrain while it meets US 65 at a cloverleaf interchange and finally crossing the Missouri River at Rocheport just west of where it reaches the mid-sized college town of Columbia in the center of the state. Through Columbia, the highway is lined with restaurants and hotels and can get congested during University of Missouri sporting events. The highway leaves Columbia after an exit with St. Charles Road on the east end of town. East of Columbia, I-70 has an interchange with US 54 at Kingdom City, Route 19 at New Florence, and Route 47 at Warrenton. Then, it continues through more gently rolling terrain until it reaches Wentzville, where it meets I-64/US 61. Here, US 40 departs from I-70. It then expands to three lanes each direction to St. Louis.
|This section requires expansion. (June 2008)|
It crosses over the Missouri River one last time on the Blanchette Bridge, which is actually made up of two bridges: the westbound span built in the late 1950s and refurbished in 2013 and the eastbound one completed in the late 1970s.
Traffic volume increases as I-70 enters St. Louis County, requiring more lanes. There are as many as 13 lanes at one point. The section of I-70 from Fifth Street in St. Charles to I-270 is among the busiest section of highway in the state, with AADT counts approaching 165,000 in 2005.
I-270 draws much of the traffic, so I-70 continues east through Bridgeton with only six lanes. After exits with Route 180 (St. Charles Rock Road) and US 67 (Lindbergh Boulevard), it passes on the southern edge of Lambert–St. Louis International Airport and through several bedroom communities – including Edmunson, Berkeley, Ferguson, and Jennings – and crossing I-170 in the process.
As it finally enters the city of St. Louis, motorists encounter what are signed as the "Express Lanes", known by MoDOT as the "reversible lanes". Two lanes in the middle of the freeway are separated from the eastbound and westbound lanes by Jersey barriers. Because of changing traffic patterns due to the I-64 reconstruction, the lanes travel eastbound all day. MoDOT regularly monitors traffic patterns of this stretch of I-70 and will adjust the express lane traffic patterns accordingly. These lanes have no entrance or exit ramps, except at the ends. They extend approximately 8 miles (13 km) from near Union Boulevard to just north of downtown.
Just before the roadway enters downtown St. Louis, I-70 turns to the east to cross the Stan Musial Veterans Memorial Bridge, which redirects I-70 traffic away from the congested Poplar Street Bridge two miles (3.2 km) to the south. The former I-70 roadway continues as I-44.
I-70 had been criticized for cutting off downtown St. Louis from the Mississippi River waterfront particularly at the Gateway Arch. St. Louis is considering a $90 million project to cover the highway (now I-44) by the Arch.
This was not the first controversy involving I-70 and the Arch. In 1959, builders of the Poplar Street Bridge asked for the National Park Service to give 25 acres (10 ha) of the park for the bridge. The request generated enormous controversy and ultimately 2.5 acres (1.0 ha) was turned over to use for the bridge.
The New Mississippi River Bridge was finished and opened to traffic on Sunday, February 9, 2014. It reroutes and redirects I-70 traffic off the congested Poplar Street Bridge. The bridge was named in honor of St. Louis Cardinals baseball legend Stan Musial.
I-70 across central Missouri is one of the oldest stretches of Interstate Highway in the system, as some sections date back as far as the late 1950s. As a result, the exits often have short, substandard acceleration and deceleration ramps, and the median is relatively narrow. Certain spots of both directions of traffic are separated by no more than a Jersey barrier. Also, a number of overpasses have low clearance, especially railway overpasses. Long-term plans have been identified to expand the highway to between six and eight lanes across the middle of the state. Tolling the Interstate has become a possible alternative, although the public does not support this idea. According to the improveI70.com website, tolling would not start until all 189 miles (304 km) of I-70 is reconstructed.
A March 2010 study of I-70 from the Kansas state line to the I-470 interchange identified several possible improvements, including expansion of the freeway from four to eight lanes, adding HOV or HOT lanes, reconstructing the Truman Road interchange and improving the curves at Jackson Avenue and Truman Road. Some novel ideas included a new alignment of I-70 as a tunnel from the southeast corner of the downtown loop to 22nd/23rd streets, covering the southern portion of the downtown loop (I-670) or making the downtown loop into a uni-directional freeway around downtown, essentially becoming a large roundabout.
|Jackson||Kansas City||0.000||0.000||I‑70 west / US-24 west / US-40 west / US-169 south||Continuation into Kansas|
|0.845||1.360||2B||Beardsley Road||Eastbound exit only; no exit 2B westbound|
|2A||I-35 south – Wichita||West end of I–35 / Downtown freeway loop concurrency|
|1.060||1.706||2C||US 169 north (Arrowhead Trafficway) – Downtown||East end of US 169 concurrency|
|1.651||2.657||2E||Route 9 north (Oak Street)||Westbound exit is via exit 2H|
|1.775||2.857||2F||Oak Street, Grand Avenue, Walnut Street||Westbound exit only; eastbound exit via exit 2E|
|2G–H|| I-29 north / I-35 north / US 71 north – St. Joseph, Des Moines
US 24 east (Admiral Boulevard)
|East end of I-35 and US 24 concurrencies; west end of US 71 concurrency|
|2.273||3.658||2J||11th Street||Eastbound exit and westbound entrance|
|2L–M|| I-670 west to I-35 south – Topeka, Wichita
US 71 south to I-49 south – Joplin
|East end of US 71 and Downtown freeway loop concurrency; westbound exit is via exit 3A|
|2.668||4.294||2K||Harrison Street, Troost Avenue||Westbound exit and eastbound entrance|
|2.944||4.738||3A||The Paseo||No eastbound exit|
|3.389||5.454||3B||Brooklyn Avenue||Eastbound exit and westbound entrance|
|4.135||6.655||4A||Benton Boulevard, Truman Road||Eastbound exit and westbound entrance|
|5.447||8.766||5A||27th Street||Eastbound exit and westbound entrance|
|5.578||8.977||5B||31st Street||Eastbound exit only|
|5.756||9.263||5C||Jackson Avenue||Westbound exit and eastbound entrance|
|6.493||10.449||6||Van Brunt Boulevard|
|7.053||11.351||7A||US 40 east / 31st Street||East end of US 40 overlap|
|8||I-435 – Wichita, Des Moines||Signed as exits 8A (south) and 8B (north)|
|9.338||15.028||9||Blue Ridge Cutoff – Truman Sports Complex||Eastbound exit 9 is via exit 8B|
|10.848||17.458||10||Sterling Avenue||Eastbound exit only; westbound exit is via exit 11|
|11||US 40 (Blue Ridge Boulevard)|
|14.093||22.680||14||Lee's Summit Road|
|15||I-470 south / Route 291 – Lee's Summit, Liberty||Signed as exits 15A (south/west) and 15B (north)|
|16.613||26.736||17||Little Blue Parkway, 39th Street|
|Blue Springs||18.563||29.874||18||Blue Springs, Lake Tapawingo, Fleming Park|
|20.392||32.818||20||Route 7 – Blue Springs, Lake Lotawana|
|21.625||34.802||21||Adams Dairy Parkway – Blue Springs|
|Grain Valley||24.412||39.287||24||US 40 west / Route AA west / Route BB north – Grain Valley, Buckner||West end of US 40 concurrency|
|Oak Grove||28.169||45.334||28||Route F south / Route H north – Levasy, Oak Grove|
|Lafayette||Bates City||31.431||50.583||31||Route D north / Route Z south – Bates City, Napoleon|
|Odessa||36.665||59.007||37A||Action Road - Outlet Mall||Eastbound exit only; access to Shops at Odessa; attached to exit 37B|
|36.989||59.528||37B||Route 131 – Odessa, Wellington||Signed as exit 37 westbound; no eastbound entrance - eastbound entrance is via exit 38|
|38.252||61.561||38||Johnson Drive||Westbound exit and eastbound entrance|
|41.173||66.262||41||Route M south / Route O north – Lexington, Mayview|
|45.382||73.035||45||Route E south / Route H north – Mayview|
|Higginsville||49.387||79.481||49||Route 13 – Higginsville, Warrensburg|
|52.839||85.036||52||Route T north – Aullville|
|Concordia||58.569||94.258||58||Route 23 – Waverly, Concordia|
|Saline||Emma||62.574||100.703||62||Route VV north / Route Y south – Emma|
|Sweet Springs||66.891||107.651||66||Route 127 – Sweet Springs, Mt. Leonard|
|71.383||114.880||71||Route EE north / Route K south – Houstonia|
|74.606||120.067||74||Route YY north|
|78.173||125.807||78||US 65 – Sedalia, Marshall||Signed as exits 78A (south) and 78B (north)|
|Cooper||89.918||144.709||89||Route K north / Route M south – Arrow Rock, Blackwater|
|98.000||157.716||98||Route 41 north / Route 135 south – Arrow Rock, Pilot Grove|
|Boonville||101.781||163.801||101||Loop 70 east / US 40 east / Route 5 south (Ashley Road) – Boonville, Tipton||East end of US 40 overlap|
|103.551||166.649||103||Route B (Main Street) – Boonville, Bunceton|
|106.382||171.205||106||Loop 70 west / Route 87 (Bingham Road) – Boonville, Prairie Home|
|111.455||179.369||111||Route 98 / Route 179 south – Overton, Wooldridge|
|Missouri River||114.714||184.614||Rocheport Interstate 70 Bridge; Cooper–Boone county line|
|Boone||115.505||185.887||115||Route BB north / Roby Farm Road – Rocheport|
|117.687||189.399||117||Route J north / Route O south – Huntsdale, Harrisburg|
|121.178||195.017||121||US 40 west / Route 240 west / Route UU south – Fayette||West end of US 40 concurrency|
|Columbia||124.398||200.199||124||Route 740 east (Stadium Boulevard) / Route E north – Columbia|
|125.543||202.042||125||Loop 70 east / West Boulevard, Creasy Springs Road – Columbia|
|126.545||203.654||126||Route 163 south (Providence Road) – Columbia|
|127.019||204.417||127||Route 763 (Range Line Road) – Columbia, Moberly|
|128.287||206.458||128||Loop 70 west – Columbia||Westbound left exit and eastbound entrance. No access to exit if entering from US 63|
|128.887||207.424||128A||US 63 – Jefferson City, Moberly||Indirect access via I-70 Connector|
|130.984||210.798||131||St. Charles Road, Lake of the Woods Road|
|133.644||215.079||133||Route Z north / Range Line Road – Centralia|
|Callaway||137.729||221.653||137||Route DD north / Route J south – Millersburg|
|144.193||232.056||144||Route HH south / Route M north – Hatton|
|Kingdom City||147.963||238.123||148||US 54 – Auxvasse, Mexico, Fulton|
|155.426||250.134||155||Route A north / Route Z south – Bachelor, Calwood|
|161.318||259.616||161||Route D south / Route YY south – Williamsburg|
|Montgomery||170.374||274.190||170||Route 161 north / Route J south – Danville, Montgomery City|
|New Florence||174.975||281.595||175||Route 19 – New Florence, Hermann|
|High Hill||179.797||289.355||179||Route F north – High Hill|
|Jonesburg||183.780||295.765||183||Route E north / Route Y south – Jonesburg|
|Warren||188.445||303.273||188||Route A north / Route B south – Truxton|
|193.484||311.382||193||Route 47 – Warrenton, Hawk Point|
|Wright City||198.962||320.198||199||Route H – Wright City|
|200.000||321.869||200||Route F south / Route J north – Wright City||Westbound exit and eastbound entrance, other half of interchange is via exit 199|
|St. Charles||Foristell||203.750||327.904||203||Route T south / Route W north – Foristell|
|209.412||337.016||209||Route Z south / Church Street – New Melle|
|210||I-64 east / US 40 east / US 61 – Chesterfield, St. Louis, Wentzville, Hannibal||East end of US 40 concurrency; signed as exits 210A (east/south) and 210B (north); I-64 exits 1A-B|
|Lake St. Louis||211.948||341.097||212||Route A north / Freymuth Road|
|213.950||344.319||214||Lake St. Louis Boulevard – Lake St. Louis|
|217.759||350.449||217||Route K south / Route M north (Main Street) – O'Fallon|
|218.929||352.332||219||T.R. Hughes Road, Belleau Creek Road|
|St. Peters||220.381||354.669||220||Route 79 north / Salt Lick Road – Elsberry, Louisiana|
|222.098||357.432||222A||Mid Rivers Mall Drive|
|222.262||357.696||222B||Veterans Memorial Parkway, Suemandy Drive||Eastbound exit only|
|224||Route 370 east||SR 370 exits 0A-B.|
|225.129||362.310||225||Cave Springs Road, Harry S. Truman Road|
|St. Charles||226.933||365.213||227||Zumbehl Road|
|228.277||367.376||228||Loop 70 east (First Capitol Drive) / Route 94 – St. Charles, Weldon Spring|
|229.379||369.150||229||Loop 70 west (Fifth Street) – St. Charles||Signed as exits 229A (south) and 229B (north) westbound|
|Missouri River||230.128||370.355||Blanchette Memorial Bridge; St. Charles–St. Louis county line|
|St. Louis||Maryland Heights||231.507||372.574||231||Route 141 (Earth City Expressway (north), Maryland Heights Expressway (south))||Signed as exits 231A (Maryland Heights Expressway) and 231B (Earth City Expressway)|
|232||I-270 – Chicago, Memphis||Signed as exits 232A (south) and 232B (north) westbound|
|Bridgeton||234.180||376.876||234||Route 180 (St. Charles Rock Road)|
|235.096||378.350||235||US 67 (Lindbergh Boulevard)||Signed as exits 235A (south) and 235B (north)|
|235.626||379.203||235C||Route B (Natural Bridge Road) / Cypress Road – Lambert-St. Louis International Airport|
|Edmundson||236.729||380.978||236||Pear Tree Drive, Natural Bridge Road, Airflight Drive, Lambert International Boulevard – Lambert-St. Louis International Airport|
|Berkeley||237.627||382.424||237||Route 115 east (Natural Bridge Road)||No westbound exit|
|238.068||383.133||238A||Lambert-St. Louis International Airport||Westbound exit and eastbound entrance|
|238||I-170||Signed as exits 238B (south) and 238C (north); I-170 exits 7A-B.|
|239.783||385.893||239||Hanley Road||Westbound exit is via exit 240|
|Cool Valley||240.393||386.875||240||Route N (Florissant Road, University Boulevard)|
|Northwoods–Norwood Court||241.691||388.964||241B||Route U (Lucas & Hunt Road)|
|Pine Lawn||242.774||390.707||242||Jennings Station Road|
|City of St. Louis||243.09||391.22||243A||Goodfellow Boulevard||Eastbound exit is via exit 242|
|243.345||391.626||243B||Route 367 north (Riverview Boulevard)||Westbound exit only|
|244.062||392.780||243C||Bircher Boulevard||Eastbound exit only|
|244.579||393.612||244B||Kingshighway Boulevard||Eastbound exit is via exit 244A|
|245.643||395.324||245B||West Florissant Avenue|
|246.111||396.077||246A||Broadway – O'Fallon Park|
|248.068||399.227||248A||Route 115 west (Salisbury Street) – McKinley Bridge|
|248.515||399.946||248B||Branch Street||Westbound exit only|
|248.755||400.332||248C||St. Louis Avenue||Eastbound exit and entrance|
|249.274||401.168||249A||I-44 west to I-55 south – Tulsa, Memphis||Former route of I-70 through Downtown St. Louis|
|249.335||401.266||249B||Tucker Boulevard – Downtown St. Louis||Signed as Exit 249 westbound, no access from Tucker to WB I-70|
|Mississippi River||250.063||402.437||Stan Musial Veterans Memorial Bridge; Missouri-Illinois state line|
|St. Clair||East St. Louis||I-70 east – Indianapolis||Continuation into Illinois|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- ^ I-670 in Bing also has I-70 on it because I-670 is designated "Alternate I-70".
- Missouri Department of Transportation (April 12, 2014). Flex Map Viewer (Map). Missouri Department of Transportation. Retrieved April 12, 2014.
- Google (2007-07-08). "Alphabet Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
- Google (2007-07-08). "A closer look of the Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
- Google (2007-07-08). "Northern part of the Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
- Google (2007-07-08). "Northeastern corner of the Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
- Google (2007-07-08). "Eastern part of the Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
- Google (2007-07-08). "I-70 between the Loop and US 40" (Map). Google Maps. Google. Retrieved 2007-07-08.
- Google (2007-07-08). "I-70 at I-435" (Map). Google Maps. Google. Retrieved 2007-07-08.
- Google (2007-07-24). "I-70 at I-470" (Map). Google Maps. Google. Retrieved 2007-07-24.
- "I-70 at Route 7". Microsoft TerraServer. United States Geological Survey. 1996-02-28. Retrieved 2007-07-24.
- Google (2007-07-24). "I-70 at the Missouri River near Columbia" (Map). Google Maps. Google. Retrieved 2007-07-24.
- Google (2007-07-24). "I-70 at US 63" (Map). Google Maps. Google. Retrieved 2007-07-24.
- "I-70 Reversibles To Remain Eastbound All Day" (Press release). Missouri Department of Transportation. 2009-01-21. Retrieved 2009-01-30.
- City leaders pitch local control of Arch grounds – St. Louis Post Dispatch – August 29, 2007
- Sharon A. Brown. "Jefferson National Expansion Administrative History". National Park Service. Retrieved 4 October 2014.
- "New Mississippi River Bridge Project". Newriverbridge.org. 2011-08-18. Retrieved 2011-09-19.
- "The Facts". Improve I-70. Missouri Department of Transportation. Retrieved 2007-07-24.
- "What are the Benefits?". Improve I-70. Missouri Department of Transportation. Retrieved 2007-07-24.
- "Draft I-70 First Tier Environmental Impact Statement (FTEIS)" (PDF). Missouri Department of Transportation. Retrieved 2010-03-30.
- Media related to Interstate 70 in Missouri at Wikimedia Commons