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I-70 (MO).svg
Interstate 70
Main route of the Interstate Highway System
Maintained by Missouri DOT
Length: 251.66 mi[1] (405.01 km)
Formed: 1956
West end: I-70 / US-24 / US-40 / US-169 at Kansas state line
Major
junctions:
I-29 / I-35 / US 71 in Kansas City
I-670 in Kansas City
I-435 in Kansas City
I-470 in Independence
I-270 in Champ
I-170 in Berkeley
I-55 / I-64 / US 40 in St. Louis
East end: I-55 / I-64 / I-70 / US 40 at Illinois state line
Missouri Highways
< US 69 US 71 >
Supplemental

In the U.S. state of Missouri, Interstate 70 is generally parallel to the Missouri River.[2] This section of the transcontinental Interstate has its western terminus at the Kansas state line on the Lewis and Clark Viaduct, concurrent with U.S. Routes 24, 40, and 169,[3] where the east end is concurrent with Interstates 64 and 55, as well as US 40.[4]

Contents

Route description

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Kansas City

I-70 Missouri-1.svg

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 Interstate 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).[5][1] Interstate 35 becomes concurrent with I-70 as soon as the highway gets into the Loop, and maintain the concurrency until the southeastern corner of the Loop.[6] Back at the northeastern 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.[7] When it does reach the corner, US 24 splits to the east, I-29 ends, and US 71 joins.[8]

After that, the freeway turns south, with interchanges to more roads. At the southeastern end, I-70, US 40, and 71 exit the Loop, where I-70 and US 40 splits east and US 71 continues south. I-670 ends, where I-70 and US 40 usurp the alignment.[9] Soon after usurpation, I-70 and US 40 turn southeast, and at exit 7A, US 40 departs from I-70.[10] Soon after that, I-70 interchanges with Interstate 435, the beltway around Kansas City.[11]

Independence to Wentzville

I-70 in Saline County

East of Interstate 435, I-70 continues east through Independence, Missouri, passing a busy cloverleaf interchange at Interstate 470.[12] 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.[13] I-70 remains at this width until its intersection with U.S. Route 40 in Wentzville, over 170 miles (270 km) away.

East of Blue Springs, I-70 takes on a rural character as it leaves Jackson County. The highway remains this way for the next 100 miles (160 km), going through gently rolling terrain and finally crossing the Missouri River just west of where it reaches the mid size college town of Columbia in the center of the state.[14] Through Columbia, the highway is lined with restaurants and hotels and can get quite congested during sporting events at the nearby University of Missouri. The highway leaves Columbia after an exit with St. Charles Road on the east end of town.[15] East of Columbia, I-70 continues through more gently rolling terrain until it reaches Wentzville. It then expands to three lanes each direction to St. Louis.

St. Louis

I-70 west of St. Louis; shown here is rush-hour traffic congestion. As of August 2007 eastbound through this section (on the right side in this picture) is being widened to 4 lanes.

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

It crosses over the Missouri River one last time on the Blanchette Bridge; actually two bridges, the westbound span built in the late 1950s and the eastbound span 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 I-70 from Fifth Street in St. Charles to Interstate 270 is among the busiest section of highway in the state, with AADT counts approaching 165,000 in 2005.[2]

I-270 drains much of the traffic so I-70 continues east through Bridgeton with only six lanes. It passes on the southern edge of Lambert St. Louis International Airport and through several bedroom communities, including Edmunson, Berkeley, Ferguson and Jennings crossing Interstate 170 in the process.

Finally entering the city of St. Louis, motorists encounter what are signed as the Express Lanes, known by MoDOT as the "reversible lanes"[16]. Two lanes down the middle of the freeway are separated from the eastbound and westbound lanes by Jersey barriers. Due to changing traffic patterns due to the Interstate 64 reconstruction, the lanes run eastbound all day. MoDOT regularly monitors traffic patterns of this stretch of I-70 and will adjust the express lane traffic patterns accordingly[16]. These lanes have no entrance or exit ramps, except at the ends. They extend approximately 8 miles (13 km) from near Union Blvd to just north of downtown.

I-70 in downtown St. Louis

As I-70 enters downtown St. Louis it passes the Edward Jones Dome and the Gateway Arch. Finally it merges with Interstate 64, Interstate 55, and US 40 and crosses the Poplar Street Bridge over the Mississippi River to Illinois. Missouri and Illinois have agreed to build a new bridge across the Mississippi River north of the Edward Jones Dome.[17]

under the elevated section of the highway in north St. Louis

I-70 has 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 by the Arch.[18]

This is not the first controversy involving I-70 and the Arch. In 1959, builders of the Poplar Bridge asked for the National Park Service to give 25 acres (100,000 m2) of the park for the bridge. The request generated enormous controversy and ultimately 2.5 acres (10,000 m2) was turned over for use for the bridge.[19]

Future

Reconstruction of I-70

Interstate 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.[20] As a result, the exits often have short, substandard acceleration and deceleration ramps, and the median is relatively narrow, with certain spots of both directions of traffic being 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.[21]

Missouri-Illinois Bridge

The Ronald Wilson Reagan Memorial Bridge is expected to be finished in 2016.

Exit list

County Location Mile # Destinations Notes
Jackson Kansas City 2 2A I-35 south  – Wichita West end of I-35 overlap
2 2B Beardsley Road Eastbound exit and westbound entrance
2 2C US 169 north (Broadway Boulevard) – Downtown Kansas City East end of US 169 overlap
2 2D Main Street, Delaware Street, Wyandotte Street Eastbound exit closed from 4 p.m. to 6 p.m.
2 2E Route 9 north (Oak Street) Westbound exit is via exit 2H
2 2F Oak Street, Grand Avenue, Walnut Street Westbound exit only; eastbound exit via exit 2E
2 2G I-29 north / I-35 north / US 71 north – St. Joseph, Des Moines East end of I-35 overlap; west end of US 71 overlap
2 2H US 24 east (Admiral Boulevard) East end of US 24 overlap
2 2J 11th Street Eastbound exit and westbound entrance
2 2K Harrison Street, Troost Avenue Westbound exit and eastbound entrance
2 2L I-670 west to I-35 south  – Topeka, Wichita
2 2M US 71 south East end of US 71 overlap; westbound exit is via exit 3A
3 3A The Paseo No eastbound exit
3 3B Brooklyn Avenue Eastbound exit and westbound entrance
3 3C Prospect Avenue
4 4A Benton Boulevard, Truman Road Eastbound exit and westbound entrance
4 4B 18th Street
4 4C 23rd Street
5 5A 27th Street Eastbound exit and westbound entrance
5 5B 31st Street Eastbound exit only
5 5C Jackson Avenue Westbound exit and eastbound entrance
6 6 Van Brunt Boulevard
7 7A US 40 east East end of US 40 overlap; eastbound exit and westbound entrance
7 7A 31st Street Westbound exit and eastbound entrance
7 7B Manchester Trafficway
8 8 I-435  – Wichita, Des Moines Signed as exits 8A (south) and 8B (north)
9 9 Blue Ridge Cutoff – Truman Sports Complex
10 10 Sterling Avenue Eastbound exit only; westbound exit is via exit 11
11 11 US 40 (Blue Ridge Boulevard)
Independence
12 12 Noland Road Serves Truman Presidential Library; Noland Road Bridge closed for road reconstruction at I-70. As of the middle of 2008 Noland off of I-70 is open in all directions
14 14 Lee's Summit Road
15 15 I-470 south / Route 291Lee's Summit, Liberty Signed as exits 15A (south) and 15B (north)
17 17 Little Blue Parkway, 39th Street
18 18 Blue Springs, Lake Tapawingo, Fleming Park
Blue Springs
20 20 Route 7Blue Springs, Lake Lotawana
21 21 Adams Dairy Parkway – Blue Springs
Grain Valley 24 24 US 40 west / Route AA west / Route BB north – Grain Valley, Buckner West end of US 40 overlap
Oak Grove 28 28 Route F south / Route H north – Levasy, Oak Grove
Lafayette Bates City 31 31 Route D north / Route Z south – Bates City, Napoleon
Odessa 37 37A Outlet Mall Eastbound exit only; westbound exit is via exit 37
37 37B Route 131Odessa, Wellington Signed as exit 37 westbound
38 38 Johnson Drive Eastbound exit is via exit 37B
41 41 Route M south / Route O north – Lexington, Mayview
45 45 Route E south / Route H north – Mayview
Higginsville 49 49 Route 13Higginsville, Warrensburg
52 52 Route T north – Aullville
Concordia 58 58 Route 23Waverly, Concordia
Emma 62 62 File:MO-supp-VV.svg Route VV north / Route Y south – Emma
Saline
Sweet Springs 66 66 Route 127Sweet Springs, Mt. Leonard
71 71 Route EE north / Route K south – Houstonia
74 74 File:MO-supp-YY.svg Route YY north
78 78 US 65Sedalia, Marshall Signed as exits 78A (south) and 78B (north)
84 84 Route J
Cooper 89 89 Route K north / Route M south – Arrow Rock, Blackwater
98 98 Route 41 north / Route 135 south – Arrow Rock, Pilot Grove
Boonville 101 101 I-70 Bus. east / US 40 east / Route 5 south (Ashley Road) – Boonville, Prairie Home East end of US 40 overlap
103 103 Route B (Main Street) – Boonville, Bunceton
106 106 I-70 Bus. west / Route 87 (Bingham Road) – Boonville, Prairie Home
111 111 Route 98 / Route 179 south – Overton, Wooldridge
Boone 115 115 Route BB north / Roby Farm Road – Rocheport
117 117 Route J north / Route O south – Huntsdale, Harrisburg
121 121 US 40 west / Route 240 west / Route UU south – Fayette West end of US 40 overlap
Columbia 124 124 Route 740 south (Stadium Boulevard) / Route E north – Columbia Serves University of Missouri
125 125 I-70 Bus. east / West Boulevard, Creasy Springs Road – Columbia
126 126 Route 163 south (Providence Road) – Columbia
127 127 Route 763 (Range Line Road) – Columbia, Moberly
128 128 I-70 Bus. west – Columbia Westbound left exit and eastbound entrance
128 128A US 63Jefferson City, Moberly
131 131 St. Charles Road, Lake of the Woods Road
133 133 Route Z north / Range Line Road – Centralia
Callaway 137 137 Route DD north / Route J south – Millersburg
144 144 Route HH south / Route M north – Hatton
Kingdom City 148 148 US 54Auxvasse, Mexico, Fulton
155 155 Route A north / Route Z south – Bachelor, Calwood
161 161 File:MO-supp-YY.svg Route D south / Route YY south – Williamsburg
Montgomery 170 170 Route 161 north / Route J south – Danville, Montgomery City
New Florence 175 175 Route 19New Florence, Hermann
High Hill 179 179 Route F north – High Hill
Jonesburg 183 183 Route E north / Route Y south – Jonesburg
Warren 188 188 Route A north / Route B south – Truxton
Truesdale;
Warrenton
193 193 Route 47Warrenton, Hawk Point
Wright City 199 199 Wildcat Drive
200 200 Route F south / Route J north – Wright City Route F; Route J - Wright City Eastbound exit is via exit 199
St. Charles Foristell 203 203 Route T south / Route W north – Foristell
Wentzville 208 208 Wentzville Parkway
209 209 Route Z south / Church Street – New Melle
210 210 US 40 east / US 61Chesterfield, St. Louis, Wentzville, Hannibal East end of US 40 overlap; signed as exits 210A (south) and 210B (north) eastbound; no westbound exit to US 40 east / US 61 south
212 212 Route A north / Freymuth Road
Lake St. Louis 214 214 Lake St. Louis Boulevard – Lake St. Louis
O'Fallon 216 216 Bryan Road
217 217 Route K south / Route M north (Main Street) – O'Fallon
219 219 T.R. Hughes Road, Belleau Creek Road
St. Peters 220 220 Route 79 north / Salt Lick Road – Elsberry, Louisana
222 222 Route C north / Mid Rivers Mall Drive – St. Peters
224 224 Route 370 east
225 225 Cave Springs Road, Harry S. Truman Road
St. Charles 227 227 Zumbehl Road
228 228 I-70 Bus. east (First Capitol Drive) / Route 94St. Charles, Weldon Spring
229 229 I-70 Bus. west (Fifth Street) – St. Charles Signed as exits 229A (south) and 229B (north) westbound
St. Louis Maryland Heights 231 231 Earth City Expressway Signed as exits 231A (south) and 231B (north)
Champ 232 232 I-270  – Chicago, Memphis Signed as exits 232A (south) and 232B (north) westbound
Bridgeton
234 234 Route 180 (St. Charles Rock Road)
235 235 US 67 (Lindbergh Boulevard) Signed as exits 235A (south) and 235B (north)
235 235C Cypress Road, Natural Bridge Road – Airport
Edmundson 236 236 Pear Tree Drive, Natural Bridge Road, Airflight Drive, Lambert International Boulevard – Airport
Berkeley 237 237 Route 115 east (Natural Bridge Road) No westbound exit
238 238A Natural Bridge Road – Airport Westbound exit and eastbound entrance
238 238 I-170 Signed as exits 238B (south) and 238C (north)
239 239 Hanley Road Westbound exit is part of exit 240
Cool Valley 240 240 Florissant Road
Normandy 241 241A Bermuda Avenue, Bermuda Road, Stanwood Drive
Northwoods;
Norwood Court
241 241B MO-supp-U.svg - Lucas & Hunt Rd
Pine Lawn 242 242 Jennings Station Rd
St. Louis City 243 243A Goodfellow Boulevard Eastbound exit is part of exit 242
243 243B Route 367 north (Riverview Blvd) Westbound exit only
243 243C Bircher Boulevard Eastbound exit only
244 244A Union Boulevard
244 244B Kingshighway Eastbound exit is via EXIT 244A - Union Blvd, Kingshighway
245 245A Shreve Ave
245 245B W. Florissant Ave
246 246A Broadway – O'Fallon Park
246 246B Adelaide Ave
247 247 Grand Blvd
248 248A Salisbury St, McKinley Bridge
248 248B Branch St Westbound exit only
248 248C St. Louis Ave Eastbound exit and entrance
249 249A Madison St – Scottrade Center Westbound exit and entrance
249 249A Tenth St – Scottrade Center Eastbound exit only
249 249C Convention Center, Broadway – America's Center, Busch Stadium Eastbound exit only - Former Exit of Sixth St
249 249D Broadway – Edward Jones Dome Eastbound exit and westbound entrance
250 250A Martin L. King BridgeEast St. Louis, Gateway Arch, Riverfront Eastbound exit and westbound entrance - Former Exit of Convention Center, Cole St, Arch-Riverfront
250 250B Memorial Drive, Pine St – Downtown St. Louis Eastbound exit and westbound entrance
251 251B Memorial Dr – Gateway Arch, Riverfront, America's Center Westbound exit and eastbound entrance
251 251A I-55 south / I-64 west / US 40 west to I-44 west  – Memphis, St. Louis, Tulsa West end of I-55 / I-64 / US 40 overlap; signed as EXITS 40C (south) and no number (west) westbound; no eastbound exit to I-64 west / US 40 west and westbound entrance from I-64 east / US 40 east
Poplar Street Bridge over the Mississippi River (state line)

Notes

  1. ^  I-670 in Google Maps also has I-70 on it because I-670 is designated "Alternate I-70".

References

  1. ^ "Route Log and Finder List - Interstate System - table 1". Federal Highway Administration. 2002-10-31. http://www.fhwa.dot.gov/reports/routefinder/table1.cfm. Retrieved 2007-07-08.  
  2. ^ Google, Inc. Google Maps – I-70 in Missouri [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  3. ^ Google, Inc. Google Maps – I-70 at the Kansas line [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  4. ^ Google, Inc. Google Maps – Poplar Street Bridge map [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  5. ^ Google, Inc. Google Maps – Alphabet Loop [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  6. ^ Google, Inc. Google Maps – A closer look of the Loop [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  7. ^ Google, Inc. Google Maps – Northern part of the Loop [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  8. ^ Google, Inc. Google Maps – Northeastern corner of the Loop [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  9. ^ Google, Inc. Google Maps – Eastern part of the Loop [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  10. ^ Google, Inc. Google Maps – I-70 between the Loop and US 40 [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  11. ^ Google, Inc. Google Maps – I-70 at I-435 [map]. Cartography by Tele Atlas. Retrieved on 2007-07-08.
  12. ^ Google, Inc. Google Maps – I-70 at I-470 [map]. Cartography by Tele Atlas. Retrieved on 2007-07-24.
  13. ^ "I-70 at Route 7". Microsoft TerraServer. United States Geological Survey. 1996-02-28. http://www.terraserverusa.com/image.aspx?T=1&S=10&Z=15&X=1950&Y=21604&W=3&qs=|Blue+Springs|MO&#124;. Retrieved 2007-07-24.  
  14. ^ Google, Inc. Google Maps – I-70 at the Missouri River near Columbia [map]. Cartography by Tele Atlas. Retrieved on 2007-07-24.
  15. ^ Google, Inc. Google Maps – I-70 at US 63 [map]. Cartography by Tele Atlas. Retrieved on 2007-07-24.
  16. ^ a b Missouri Department of Transportation (2009-01-21). "I-70 Reversibles To Remain Eastbound All Day". Press release. http://www.modot.org/stlouis/news_and_information/District6News.shtml?action=displaySSI&newsId=25679. Retrieved 2009-01-30.  
  17. ^ The New Mississippi River Bridge Projects
  18. ^ City leaders pitch local control of Arch grounds - St. Louis Post Dispatch - August 29, 2007
  19. ^ Jefferson National Expansion Administrative History by Sharon A. Brown - nps.gov - Retrieved January 22, 2008
  20. ^ "The Facts". Improve I-70. Missouri Department of Transportation. http://www.improvei70.org/1d_facts_main.html. Retrieved 2007-07-24.  
  21. ^ "What are the Benefits?". Improve I-70. Missouri Department of Transportation. http://www.improvei70.org/1d3_benefits_main.html. Retrieved 2007-07-24.  
Interstate 70
Previous state:
Kansas
Missouri Next state:
Illinois

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