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Interstate 70 in Missouri

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.

Interstate 70 marker

Interstate 70
I-70 highlighted in red
Route information
Maintained by MoDOT
Length250.063 mi[1] (402.437 km)
Existed1956–present
Major junctions
West end I-70 / US-24 / US-40 / US-169 at Kansas state line
 
East end I-70 at Illinois state line
Location
CountiesJackson, Lafayette, Saline, Cooper, Boone, Callaway, Montgomery, Warren, St. Charles, St. Louis, City of St. Louis
Highway system
US 69US 71

Contents

Route descriptionEdit

Kansas CityEdit

While passing through Kansas City, I-70 is known as the "George Brett Super Highway", named after former Kansas City Royals third baseman and Baseball Hall of Fame member George Brett. The Truman Sports Complex, which houses the Royals' and Chiefs' stadiums, is located adjacent to the I-70/I-435 interchange.

Crossing into Missouri 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).[2][1] I-70 becomes concurrent with I-35 once it enters into the Loop. Both interstates maintain the concurrency until they approach the northeastern corner of the Loop.[3] 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 in the Loop's northeastern corner.[4] At that corner, US 24 splits to the east, I-29 ends, and US 71 joins.[5]

Once it leaves I-35, I-70 turns south, with interchanges to more roads. At the southeastern corner, I-70, US 40, US 71 all exit the Loop. I-70 and US 40 split off to the east, and US 71 continues south. I-670 ends at the alignment.[6] Not long after they usurpt that alignment, I-70/US 40 turn southeast. US 40 departs from I-70 at exit 7A.[7] I-70 then interchanges with I-435, the beltway around Kansas City.[8]

Independence to WentzvilleEdit

 
I-70 in Saline County

East of I-435, I-70 continues east through Independence, passing a busy cloverleaf interchange at I-470.[9] 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.[10] 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.[11] 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.[12] 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.

St. LouisEdit

 
I-70 west of St. Louis; shown here is rush-hour traffic congestion. Since this photograph was taken, this section has been widened to 4 lanes in each direction.

East of Wentzville, I-70 passes through the bedroom community of Lake St. Louis, then the growing towns of O'Fallon and St. Peters, and finally the historic city of St. Charles.

It crosses over the Missouri River one last time on the Blanchette Memorial 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.[2]

I-270 draws much of the traffic, so I-70 continues east through Bridgeton with only six lanes. After interchanges 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".[13] Two lanes in the middle of the freeway are separated from the eastbound and westbound lanes by Jersey barriers. Due to traffic pattern changes caused by 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.[13] 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 it enters downtown St. Louis, I-70 turns to the east to cross the Stan Musial Veterans Memorial Bridge, which redirects the highway's traffic away from the congested Poplar Street Bridge two miles (3.2 km) to the south. The former stretch of I-70 now continues as I-44.

HistoryEdit

 
Prior to 2014, I-70 traveled through downtown St. Louis near the Gateway Arch.

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.[14]

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.[15]

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.[16]

FutureEdit

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.[17] 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.[18] 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.[citation needed]

A March 2010 study[19] 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.

Exit listEdit

CountyLocationmi[1]kmExitDestinationsNotes
JacksonKansas City0.0000.000     I-70 / US-24 / US-40 west / US-169 south – TopekaContinuation into Kansas
0.886–
1.041
1.426–
1.675
2A  I-35 south – WichitaWest end of I-35 / Downtown freeway loop concurrency
0.8451.3602BBeardsley RoadEastbound exit and westbound entrance
1.0601.7062C  US 169 north (Arrowhead Trafficway) / Broadway Boulevard – DowntownEast end of US 169 concurrency
1.3032.0972DMain Street / Delaware Street / Wyandotte StreetSigned as "Main St." only eastbound
1.6512.6572E  Route 9 north / Oak StreetWestbound access is via exit 2H
1.853–
2.028
2.982–
3.264
2G     I-29 / I-35 / US 71 north / US 24 west – St. Joseph, Des MoinesMoDOT signs this as southern terminus of I-29; east end of I-35 and US 24 concurrencies; west end of US 71 concurrency; signed as exit 2G–H eastbound
2H   US 24 east to Route 9 / Admiral BoulevardWestbound exit only
2.2733.6582J11th StreetEastbound exit and westbound entrance
2.6684.2942KHarrison Street / Troost AvenueWestbound exit and eastbound entrance
2.375–
2.295
3.822–
3.693
2L   I-670 west (I-70 Alt.) to I-35 south – Topeka, Wichita
2M  US 71 south – JoplinEast end of the Bruce Watkins Drive Memorial Parkway; east end of US 71 and Downtown freeway loop concurrency; I-670 exit 2N; westbound access is via exit 3A
14th Street / Charlotte StreetEastbound entrance only
2.9444.7383A  To US 71 / The PaseoNo eastbound exit
3.3895.4543BBrooklyn AvenueEastbound exit and westbound entrance
3.6445.8643CProspect Avenue
4.1356.6554ABenton Boulevard / Truman RoadEastbound exit and westbound entrance
4.4207.1134B18th Street
4.8797.8524C23rd Street
5.4478.7665A27th StreetEastbound exit and westbound entrance
5.5788.9775B31st StreetEastbound exit only
5.7569.2635CJackson AvenueWestbound exit and eastbound entrance
6.49310.4496Van Brunt Boulevard
7.05311.3517A  US 40 east / 31st StreetEast end of US 40 overlap
7.67512.3527BManchester Trafficway
8.078–
9.105
13.000–
14.653
8  I-435 – Wichita, Des MoinesI-435 exits 63A-B; signed as exits 8A (south) & 8B (north).
9.33815.0289Blue Ridge Cutoff – Truman Sports ComplexEastbound exit 9 is via exit 8B
10.84817.45810Sterling AvenueEastbound exit only
Independence11.101–
11.122
17.865–
17.899
11  US 40 (Blue Ridge Boulevard)
12.59620.27112Noland Road
14.09322.68014Lee's Summit Road
15.090–
15.776
24.285–
25.389
15   I-470 south / Route 291 – Lee's Summit, Liberty, WichitaI-470 exits 16B–C; signed as exits 15A (south/west) & 15B (north)
16.61326.73617Little Blue Parkway / 39th Street
Blue Springs18.56329.87418Blue Springs, Lake Tapawingo, Fleming Park
20.39232.81820  Route 7 – Blue Springs, Lake Lotawana
21.62534.80221Adams Dairy Parkway – Blue Springs
Grain Valley24.41239.28724    US 40 west / Route AA west / Route BB north – Grain Valley, BucknerWest end of US 40 concurrency
Oak Grove28.16945.33428   Route F south / Route H north – Levasy, Oak Grove
LafayetteBates City31.43150.58331   Route D north / Route Z south – Bates City, Napoleon
Odessa36.66559.00737AAction Road - Outlet MallEastbound exit only; access to Shops at Odessa; attached to exit 37B
36.98959.52837B  Route 131 – Odessa, WellingtonSigned as exit 37 westbound; no eastbound entrance - eastbound entrance is via exit 38
38.25261.56138Johnson DriveWestbound exit and eastbound entrance
41.17366.26241   Route M south / Route O north – Lexington, Mayview
45.38273.03545   Route E south / Route H north – Mayview, Fayetteville
Higginsville49.38779.48149  Route 13 – Higginsville, Warrensburg
52.83985.03652  Route T north – Aullville
Concordia58.56994.25858  Route 23 – Waverly, Concordia
SalineEmma62.574100.70362   Route VV north / Route Y south – Emma
Sweet Springs66.891107.65166  Route 127 – Sweet Springs, Mt. Leonard
71.383114.88071   Route EE north / Route K south – Houstonia
74.606120.06774  Route YY north
78.173125.80778  US 65 – Sedalia, MarshallSigned as exits 78A (south) and 78B (north)
84.614136.17384  Route J
Cooper89.918144.70989   Route K north / Route M south – Arrow Rock, Blackwater
98.000157.71698   Route 41 north / Route 135 south – Arrow Rock, Pilot Grove
Boonville101.781163.801101    BL I-70 east / US 40 east / Route 5 south (Ashley Road) – Boonville, TiptonEast end of US 40 overlap
103.551166.649103  Route B (Main Street) – Boonville, Bunceton
Windsor Place106.382171.205106   BL I-70 west / Route 87 (Bingham Road) – Boonville, Prairie Home
111.455179.369111   Route 98 / Route 179 south – Overton, Wooldridge
Missouri River114.714184.614Rocheport Interstate 70 Bridge; CooperBoone county line
Boone115.505185.887115  Route BB north / Roby Farm Road – Rocheport
117.687189.399117   Route J north / Route O south – Huntsdale, Harrisburg
121.178195.017121    US 40 west / Route 240 west / Route UU south – FayetteWest end of US 40 concurrency
Columbia124.398200.199124    Route 740 east (Stadium Boulevard) / Route E north – University of Missouri, University Hospital
125.543202.042125  BL I-70 east / West Boulevard / Creasy Springs Road
126.545203.654126  Route 163 (Providence Road) – Downtown Columbia
127.019204.417127  Route 763 (Range Line Road) – Moberly
128.287206.458128  BL I-70 westWestbound exit only as of 2018. Eastbound traffic onto I-70 rerouted to I-70 Connector.
128.887207.424128A    US 63 / BL I-70 east / Route PP – Jefferson City, MoberlyIndirect access via I-70 Connector. BL 70 not signed.
130.984210.798131St. Charles Road / Lake of the Woods Road
133.644215.079133  Route Z north / Range Line Road – Centralia
Callaway137.729221.653137   Route DD north / Route J south – Millersburg
144.193232.056144   Route HH south / Route M north – Hatton
Kingdom City147.963238.123148  US 54 – Auxvasse, Mexico, Fulton, Jefferson City, Lake of the Ozarks
155.426250.134155   Route A north / Route Z south – Bachelor, Calwood
161.318259.616161   Route D south / Route YY south – Williamsburg
Montgomery170.374274.190170   Route 161 north / Route J south – Danville, Montgomery City
New Florence174.975281.595175  Route 19 – New Florence, Hermann
High Hill179.797289.355179  Route F north – High Hill
Jonesburg183.780295.765183   Route E north / Route Y south – Jonesburg
Warren188.445303.273188   Route A north / Route B south – Truxton
Warrenton192.121309.189192  Route MM north / West Warrenton Blvd. – WarrentonRoundabouts serve as access points to collector roads that direct to Route MM and Veterans Memorial Pkwy. West Warrenton Blvd is the newly created road, that serves as the overpass
TruesdaleWarrenton line193.484311.382193  Route 47 – Warrenton, Hawk Point
Wright City198.962320.198199  Route H – Wright City
200.000321.869200   Route F south / Route J north – Wright CityWestbound exit and eastbound entrance; other half of interchange is via exit 199
St. CharlesForistell203.750327.904203   Route T south / Route W north – Foristell
Wentzville206.586332.468206David Hoekel ParkwayExit is set to open in 2019
208.231335.115208Wentzville Parkway
209.412337.016209  Route Z south / Church Street – New Melle
210.090–
211.002
338.107–
339.575
210    I-64 east / US 40 east / US 61 (Avenue of the Saints) – Chesterfield, St. Louis, Wentzville, HannibalEast end of US 40 concurrency; signed as exits 210A (east/south) and 210B (north); I-64 exit 1; western terminus of I-64
Lake St. Louis211.948341.097212  Route A north / Freymuth Road
213.950344.319214Lake St. Louis Boulevard
O'Fallon215.977347.581216Bryan Road
217.759350.449217   Route K south / Route M north (Main Street) – O'Fallon
218.929352.332219T.R. Hughes Boulevard / Belleau Creek Road
St. Peters220.381354.669220  Route 79 north / Salt Lick Road – Elsberry, Louisiana
222.098357.432222AMid Rivers Mall Drive
222.262357.696222BVeterans Memorial Parkway / Suemandy DriveEastbound exit only
223.365–
223.945
359.471–
360.405
224  Route 370 eastRoute 370 exits 0A-B
225.129362.310225Cave Springs Road / Harry S Truman Road
St. Charles226.933365.213227Zumbehl Road
228.277367.376228   BL I-70 east (First Capitol Drive) / Route 94 – St. Charles, Weldon Spring
229.143368.770229AConvention Center Boulevard / Fairgrounds RoadNo eastbound entrance
229.379369.150229B  BL I-70 west (Fifth Street) – St. Charles
Missouri River230.128370.355Blanchette Memorial Bridge; St. CharlesSt. Louis county line
St. LouisMaryland Heights231.507372.574231A  Route 141 south (Maryland Heights Expressway)Cloverleaf interchange
231B  Route 141 north (Earth City Expressway)
Maryland HeightsBridgeton line232.222–
233.024
373.725–
375.016
232  I-270 – Chicago, MemphisI-270 exits 20A-B; signed as exits 232A (south) and 232B (north) westbound; Parclo interchange
Bridgeton234.180376.876234  Route 180 (St. Charles Rock Road)
235.096378.350235  US 67 (Lindbergh Boulevard)Signed as exits 235A (south) and 235B (north)
235.626379.203235C   Route B (Natural Bridge Road) / Cypress Road – Lambert-St. Louis International Airport
Edmundson236.729380.978236Pear Tree Drive / Natural Bridge Road / Airflight Drive / Lambert International Boulevard – Lambert-St. Louis International Airport
Berkeley237.627382.424237  Route 115 east (Natural Bridge Road)No westbound exit
238.068383.133238ALambert-St. Louis International AirportWestbound exit and eastbound entrance
238.430–
239.066
383.716–
384.739
238  I-170Signed as exits 238B (south) and 238C (north); I-170 exits 7A-B.
239.783385.893239Hanley RoadWestbound exit is via exit 240
Cool Valley240.393386.875240  Route N (Florissant Road / University Boulevard) / North Hanley RoadN. Hanley Road not signed eastbound
Normandy240.920387.723241ABermuda Road
NorthwoodsNorwood Court line241.691388.964241B  Route U (Lucas & Hunt Road)
Pine Lawn242.774390.707242Jennings Station Road
City of St. Louis243.09391.22243AGoodfellow BoulevardEastbound access via exit 242
243.345391.626243B  Route 367 north (Riverview Boulevard)Westbound exit only
244.062392.780243CBircher BoulevardEastbound exit only
244.255393.090244AUnion Boulevard / Kingshighway
I-70 Express Lanes – DowntownWest end of Express Lanes; eastbound exit only; westbound entrance closed in 2009
244.579393.612244BKingshighway BoulevardWestbound exit and eastbound entrance; eastbound access via exit 244A
245.013394.310245AShreve Avenue
245.643395.324245BWest Florissant Avenue
246.111396.077246ACarrie AvenueFormerly signed as N Broadway and O'Fallon Park
246.622396.900246BAdelaide Avenue
247.218397.859247Grand Boulevard
248.068399.227248A  Route 115 west (Salisbury Street) – McKinley BridgeAccess to Illinois Route 3
248.515399.946248BBranch StreetWestbound exit only
248.755400.332248CSt. Louis AvenueEastbound exit and entrance
249.274401.168249A   I-44 west to I-55 south – Tulsa, MemphisFormer route of I-70 through Downtown St. Louis
249.335401.266249B  To Historic US 66 (Tucker Boulevard) – Downtown St. LouisSigned as exit 249 westbound; no westbound entrance
249.840402.079292BBroadwayEastbound exit only for Express Lanes; exit number based on I-44 mileage
  I-44 westEast end of Express Lanes; eastbound exit only for Express Lanes; eastern terminus of I-44
Mississippi River250.063402.437Stan Musial Veterans Memorial Bridge; Missouri-Illinois state line
  I-70 east – IndianapolisContinuation into Illinois
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

ReferencesEdit

  1. ^ a b Missouri Department of Transportation (April 12, 2014). MoDOT HPMAPS (Map). Missouri Department of Transportation. Retrieved April 12, 2014.
  2. ^ Google (2007-07-08). "Alphabet Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
  3. ^ Google (2007-07-08). "A closer look of the Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
  4. ^ Google (2007-07-08). "Northern part of the Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
  5. ^ Google (2007-07-08). "Northeastern corner of the Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
  6. ^ Google (2007-07-08). "Eastern part of the Loop" (Map). Google Maps. Google. Retrieved 2007-07-08.
  7. ^ Google (2007-07-08). "I-70 between the Loop and US 40" (Map). Google Maps. Google. Retrieved 2007-07-08.
  8. ^ Google (2007-07-08). "I-70 at I-435" (Map). Google Maps. Google. Retrieved 2007-07-08.
  9. ^ Google (2007-07-24). "I-70 at I-470" (Map). Google Maps. Google. Retrieved 2007-07-24.
  10. ^ "I-70 at Route 7". Microsoft TerraServer. United States Geological Survey. 1996-02-28. Retrieved 2007-07-24.
  11. ^ Google (2007-07-24). "I-70 at the Missouri River near Columbia" (Map). Google Maps. Google. Retrieved 2007-07-24.
  12. ^ Google (2007-07-24). "I-70 at US 63" (Map). Google Maps. Google. Retrieved 2007-07-24.
  13. ^ a b "I-70 Reversibles To Remain Eastbound All Day" (Press release). Missouri Department of Transportation. 2009-01-21. Retrieved 2009-01-30.
  14. ^ City leaders pitch local control of Arch grounds – St. Louis Post Dispatch – August 29, 2007 Archived January 31, 2008, at the Wayback Machine.
  15. ^ Sharon A. Brown. "Jefferson National Expansion Administrative History". National Park Service. Retrieved 4 October 2014.
  16. ^ "New Mississippi River Bridge Project". Newriverbridge.org. 2011-08-18. Retrieved 2011-09-19.
  17. ^ "The Facts". Improve I-70. Missouri Department of Transportation. Retrieved 2007-07-24.
  18. ^ "What are the Benefits?". Improve I-70. Missouri Department of Transportation. Retrieved 2007-07-24.
  19. ^ "Draft I-70 First Tier Environmental Impact Statement (FTEIS)" (PDF). Missouri Department of Transportation. Retrieved 2010-03-30.

External linksEdit

Route map:

KML is from Wikidata


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