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U.S. Route 40 in Missouri

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This article is about the section of U.S. Route 40 in Missouri. For the entire route, see U.S. Route 40.
U.S. Route 40 marker
U.S. Route 40
Map
US 40 highlighted in red
Route information
Maintained by MoDOT
Existed1926–present
Major junctions
West end I-70 / US-24 / US-40 / US-169 in Kansas City
Major intersections
East end I-55 / I-64 / US 40 in St. Louis
Location
CountryUnited States
StateMissouri
CountiesJackson, Lafayette, Saline, Cooper, Howard, Boone, Callaway, Montgomery, Warren, St. Charles, St. Louis, City of St. Louis
Highway system
← Route 39→ Route 41

U.S. Route 40 (US 40) in the state of Missouri is a U.S. highway that runs from Kansas City to St. Louis. Outside of Greater St. Louis, much of the route either parallels or runs along I-70. East of Wentzville in Greater St. Louis, the route runs along I-64.

Route description

[edit]
One of several interchanges on the Alphabet Loop, located northeast of downtown

US 40, along with I-70, US 24, and US 169, enters Kansas City via the Intercity Viaduct. US 169 exits the freeway north to the Buck O'Neil Bridge and I-35 joins with the remaining three routes. At the interchange with I-29 and US 71, I-70, US 24, and US 40 turn south while I-35 turns north. At I-670, I-70, US 24, and US 40 turn east while US 71 continues south toward I-49. In East Side, US 40 leaves I-70 before meeting I-435/US 24. Shortly after I-435, US 40 runs along or parallels the Kansas City–Independence line. Between I-470 and Blue Springs, the two roadways splits. At Grain Valley, US 40 rejoins I-70.[1][2]

For 77 miles (124 km), US 40 runs along I-70 through rural areas, meeting US 65 at Marshall Junction as well as multiple state highways in different locations. US 40 eventually leaves the freeway to serve downtown Boonville, running concurrently with I-70 Bus. and Route 5 in the process. As the road approaches downtown, I-70 Bus. turns southeast while US 40 and Route 5 turns north, both running along Route 87. After leaving downtown and crossing above the Missouri River, Route 87 and then Route 5 leaves northward from US 40. US 40 parallels the Missouri River before reaching Rocheport; the route then parallels I-70. US 40 reenters the freeway just after Midway.[1][2]

I-70/US 40 runs north of downtown Columbia. The freeway serves US 63 via a connector road, located east of the US 63 freeway.[1][2]

US 40 continues to run along I-70 through rural areas between Columbia and Wentzville; the freeway, at one point, meets US 54 in Kingdom City. In Wentzville, at the Greater St. Louis area, US 40 leaves I-70 to enter I-64/US 61. US 40, along with I-64 and US 61, then crosses the Missouri River again, this time via the Daniel Boone Bridge. After crossing the river, the freeway serves the Spirit of St. Louis Airport in Chesterfield. At the Frontenac–Ladue line, US 61 leaves the freeway to enter south along US 67 (Lindbergh Boulevard). Next to the I-170 interchange in Richmond Heights, drivers can get on the Brentwood I-64 station on the Blue Line. Just after entering St. Louis proper, I-64/US 40 pares through the southern part of Forest Park. The freeway then becomes a double-decker twice: from Vandeventer Avenue to Compton Avenue and from 14th Street (near the Gateway Transportation Center) to an interchange with I-44/I-55. I-55 merges with I-64/US 40 near Gateway Arch. The freeway then crosses above the Mississippi River via the Poplar Street Bridge to enter Illinois.[1][2]

History

[edit]

US 40 was formed in 1926.[3] In Missouri, it ran from Kansas City to St. Louis roughly along its current alignment except in the St. Louis area.[4][5] US 40 originally ran through St. Charles, but was rerouted southward closer to its current alignment in 1941.[6][7]

Daniel Boone Expressway

[edit]

The first section of present-day I-64/US 40 between Skinker Boulevard and Vandeventer Avenue opened in 1937.[8][9] Originally called the Express Highway, it was then renamed to Red Feather Highway in 1948.[10]

The expressway was originally not signed as an Interstate.

The Daniel Boone Expressway was established in 1938 from the Daniel Boone Bridge above the Missouri River to Lindbergh Boulevard. The expressway later extended eastward to Brentwood Boulevard in the 1940s. In 1959, the expressway was extended east from Brentwood to the Red Feather Highway, of which the latter highway became part of the Daniel Boone Expressway.[11][12] In 1965, the expressway was extended to a pair of now-demolished connector ramps (part of a now-canceled expressway) east of Jefferson Avenue.[13][14] The Poplar Street Bridge and the double-decker expressway east of 8th Street opened in 1967, which led to the realignment of US 40 from the Veterans Bridge to the newly-opened freeway bridge.[15][16] The remaining double-decker section in downtown was finished by 1970.[17][18]

In 1987, I-64 was extended west from the I-55/I-70/US 40 interchange in East St. Louis, Illinois, to I-270 in Town and Country via US 40 with a possibility of extending further west to I-70 in Wentzville via US 40/US 61.[19][20][21] In the early 2000s, I-64 was extended west to Route 94.[22][23] In the early 2010s, I-64 was extended to I-70 in Wentzville.[24][25]

Reconstruction

[edit]

The Daniel Boone Bridge originally had only one bridge carrying two lanes of traffic (one in each direction). In 1989, a second bridge was built to carry four lanes of eastbound traffic to accommodate an increasing amount of traffic attributed to population growth. The old bridge was reconfigured to serve three lanes of westbound traffic.[26] However, due to the deterioration and the substandard lane configuration of the old bridge, a new bridge was built from 2013-2015 to the west of the 1989 bridge. The new bridge opened in 2015 for eastbound traffic, whereas the 1989 bridge reversed direction to serve westbound traffic. The 1937 bridge was demolished in 2016.[27][28]

From 2007 to 2010, MoDOT reconstructed a portion of I-64/US 40 (dubbed "The New I-64" project) from Spoede Road to Kingshighway Boulevard.[29][30]

Major intersections

[edit]
CountyLocationmi[31]kmExitDestinationsNotes
Kansas River0.0000.000



 I-70 west / US-24 west / US-40 west / US-169 south / Lewis and Clark Trail – Topeka		Continuation into Kansas
Lewis and Clark Viaduct; Kansas–Missouri line
JacksonKansas City0.886–
1.041		1.426–
1.675		2A
 I-35 south – Wichita		Western end of I-35 / Downtown Loop concurrency
0.8451.3602BBeardsley RoadEastbound exit and westbound entrance
1.0601.7062C
 US 169 north (Broadway Boulevard)		Eastern end of US 169 concurrency. Access to Charles B. Wheeler Downtown Airport and Downtown
1.3032.0972DMain Street / Delaware Street / Wyandotte StreetSigned as Main Street only eastbound
1.6512.6572E
 Route 9 north / Oak Street		Westbound access is via exit 2H
1.853–
2.028		2.982–
3.264		2G


 I-29 north / I-35 north / US 71 north / Lewis and Clark Trail – St. Joseph, Des Moines		Eastern end of I-35 concurrency; western end of US 71 concurrency; signed as exit 2G–H eastbound; southern terminus of I-29
2H

 To Route 9 north / Admiral Boulevard

 US 24 Bus. (Independence Avenue)		Westbound exit and eastbound entrance; Substitute exit for Exits 2F and 2E westbound
2.2733.6582J11th Street to 10th Street VIA Charlotte StreetEastbound exit and westbound entrance; access to University of Missouri-Kansas City Medical School
2.6684.2942K12th Street / 11th Street to Charlotte Street / 10th Street / Harrison Street / Troost AvenueWestbound exit and eastbound entrance
2.375–
2.295		3.822–
3.693		2L


 I-670 west to I-35 south – Wichita		I-670 exit 2N
2M
 US 71 south – Joplin		Eastern end of US 71 and Downtown Loop concurrency; I-670 exit 2N; westbound access is via exit 3A; eastern end of the Bruce Watkins Drive Memorial Parkway; access to UMKC Medical School, and Truman Medical Center-Hospital Hill
2P 13th Street / Charlotte StreetWestbound exit only; access to Downtown Kansas City, UMKC Medical School, and Truman Medical Center-Hospital Hill
14th Street / Charlotte StreetEastbound entrance only
2QTruman Road / Locust Street / Oak Street / Grand Boulevard / Walnut Street / Main Street / Baltimore AvenueWestbound exit and eastbound entrance. Access to Power and Light District and T-Mobile Center.
2.9444.7383A

 To US 71 south / The Paseo		Westbound exit and entrance and eastbound entrance only. No eastbound exit from I-70 east; no westbound entrance to I-670 west; I-670 exit 3A; access to the American Jazz Museum and the Negro Leagues Baseball Museum
3.3895.4543BBrooklyn AvenueEastbound exit and westbound entrance
3.6445.8643CProspect AvenueAccess to Pioneer College
4.1356.6554ABenton Boulevard / Truman RoadEastbound exit and westbound entrance
4.4207.1134B17th StreetAccess to American Jazz Museum and Negro Leagues Baseball Museum
4.8797.8524C22nd Street
5.4478.7665A27th StreetEastbound exit and westbound entrance
5.5788.9775BMyrtle Avenue to 31st StreetEastbound exit only
5.7569.2635CJackson Avenue / Myrtle Avenue to 27th StreetWestbound exit and eastbound entrance
6.49310.4496Van Brunt BoulevardAccess to Veteran Administration Medical Center
7.05311.351–

 I-70 east / US 24 east / 31st Street west – St. Louis		Eastern end of I-70/US 24 overlap
8.71314.022

 I-435 north / US 24 east – Des Moines
Kansas City–Independence line11.44618.421 I-70
Independence16.11225.930
 I-470 / Route 291 to I-70 – Lee's Summit, Liberty
Blue Springs21.4334.49
 Route 7 to I-70 – Pleasant Hill
Grain Valley25.6741.31–
 I-70 west – Kansas City		Western end of I-70 overlap
Oak Grove29.42647.35728 Route F / Route H – Levasy, Oak Grove
LafayetteBates City31 Route D / Route Z – Bates City, Napoleon
Odessa37AAction Road - Outlet MallEastbound exit only
37B Route 131 – Odessa, WellingtonSigned as exit 37 westbound
38Johnson DriveWestbound exit and eastbound entrance
​41 Route M / Route O – Lexington, Mayview
​45 Route H – Mayview
Higginsville49 Route 13 – Higginsville, WarrensburgAccess to Wentworth Military Academy and Junior College, Missouri Veterans State Cemetery, Whiteman Air Force Base, the University of Central Missouri, Confederate Memorial State Historic Site, Battle of Lexington State Historic Site, and Maple Leaf Lake Conservation Area
​52 Route T – Aullville
Concordia58 Route 23 – Concordia, Waverly, Knob Noster
SalineEmma62 Route VV / Route Y – Emma
Sweet Springs66 Route 127 – Sweet Springs, Mt. Leonard
​71 Route EE / Route K – Houstonia
​74 Route YY
​78 US 65 – Sedalia, MarshallSigned as exits 78A (south) and 78B (north)
​84 Route J
Cooper​89 Route K / Route M – Arrow Rock, Blackwater
​98 Route 41 / Route 135 – Arrow Rock, Pilot Grove
Boonville101
 I-70 east – Columbia


 I-70 BL begins / Route 5 south (Ashley Road) – Tipton, Lake of the Ozarks		Eastern end of I-70 overlap; western end of I-70 BL/Route 5 overlap


 I-70 BL east / Route 87 south (Main Street)		Western end of Route 87 overlap; eastern end of I-70 BL overlap
Missouri RiverBoonslick Bridge
Howard​
 Route 87 north – Glasgow, Boone's Lick State Historic Site		Eastern end of Route 87 concurrency

 Route 5 north – New Franklin, Central Methodist University, Katy Trail State Park		Eastern end of Route 5 concurrency


 Route 240 Alt. east – Fayette

 Route 240 west – Fayette, Central Methodist University		Western end of Route 240 concurrency


 Route 240 Spur east – Rocheport
BooneMidway

 I-70 west / Route 240 ends		Western end of I-70 concurrency; eastern terminus of Route 240
Columbia124 Route E / Route 740 (Stadium Boulvard) – ColumbiaAccess to the University of Missouri, University Hospital, and Harry S. Truman Memorial Veterans' Hospital
125 I-70 BL to West Boulevard
126 Route 163 (Providence Road)Access to Downtown
127 Route 763 (Range Line Road)Access to Columbia College and Stephens College
128
 I-70 BL west – Columbia		Westbound exit only as of 2018; eastbound traffic onto I-70 rerouted to I-70 Connector
128A US 63 – Jefferson City, MoberlyIndirect access via I-70 Connector; access to Columbia Regional Airport and the University of Missouri
131St. Charles Road / Lake of the Woods Road
​133 Route Z – Centralia
Callaway​137 Route DD / Route J – MillersburgAccess to Little Dixie Lake Conservation Area
​144 Route HH / Route M – Hatton
Kingdom City148 US 54 – Auxvasse, Mexico, FultonAccess to the Lake of the Ozarks, Mark Twain Lake, and the National Churchill Museum
​155 Route A / Route Z – Bachelor, Calwood
​161 Route D / Route YY – WilliamsburgAccess to Whetstone Creek Conservation Area
Montgomery​170 Route 161 / Route J – Danville, Montgomery CityAccess to Graham Cave State Park
New Florence175 Route 19 – New Florence, HermannAccess to Deutschheim State Historic Site and Mark Twain Lake
High Hill179 Route F – High HillAccess to Laborers-AGC Training Center
Jonesburg183 Route E / Route NN / Route Y – Jonesburg
Warren​188 Route A / Route B – Truxton
Warrenton192 Route MM / West Warrenton BoulevardRoundabouts serve as access points to collector roads that direct to Route MM and Veterans Memorial Parkway; West Warrenton Boulevard serves as the overpass
Truesdale–Warrenton line193 Route 47 – Warrenton, Hawk Point
Wright City199 Route H – Wright City
200 Route F / Route J / Route H – Wright CityWestbound exit and eastbound entrance; other half of interchange is via exit 199
St. CharlesForistell203 Route T / Route W – Foristell
Wentzville206David Hoekel Parkway
208 Wentzville ParkwayAccess to SSM Health St. Joseph Hospital — Wentzville
209 Route Z / Church Street




 US 61 north (Avenue of the Saints) / I-64 begins / I-70 east – Hannibal, St. Louis		Eastern end of I-70 concurrency; western end of I-64/US 61 concurrency; western terminus of I-64
Lake St. Louis1CProspect Road
2Lake Saint Louis Boulevard
4A Route NTo route N
4B Route 364 – Dardenne PrairieExits 1A-B on SR 364; cloverleaf interchange
O'Fallon6 Route DD (Winghaven Boulevard)
9 Route K – O'Fallon
Weldon Spring10 Route 94 – St. CharlesEastbound exit is via exit 9
11Research Park CircleNo westbound entrance
Missouri RiverDaniel Boone Bridge
St. LouisChesterfield14Chesterfield Airport RoadEastbound exit and westbound entrance
Spirit of Saint Louis BoulevardWestbound exit and eastbound entrance
16Long Road / Chesterfield Airport RoadWestbound exit and eastbound entrance
17Boone's Crossing
19AChesterfield Parkway West
19B Route 340 (Olive Boulevard / Clarkson Road)
20Chesterfield Parkway EastWestbound exit and eastbound entrance
21Timberlake Manor Parkway
Town and Country22 Route 141 (Woods Mill Road)
23Maryville Centre DriveNo eastbound exit
24Mason Road
25 I-270 – Chicago, MemphisExit 12 on I-270
26 Route JJ (Ballas Road)Access to Mercy Hospital, Missouri Baptist Medical Center, and Covenant Seminary
Frontenac27Spoede Road
28A
 US 61 south / US 67 (Lindbergh Boulevard)		Eastern terminus of concurrency with US-61; national southern terminus of the Avenue of the Saints
Ladue28BClayton RoadWestbound exit and eastbound entrance
30McKnight Road
Richmond Heights31A
 I-170 north – Clayton		Exit 1 on I-170; southern terminus of I-170; access to Lambert–St. Louis Airport
31BBrentwood Boulevard / Hanley RoadRoads connected via one way collector road
32Laclede Station RoadFormer westbound exit and eastbound entrance; removed 2007[32]
33ABig Bend Boulevard
33BBellevue AvenueEastbound exit; westbound entrance via collector road connected to exit 33A
City of St. Louis33CMcCausland Avenue
34AClayton Road / Skinker BoulevardWestbound exit and eastbound entrance
34BHampton AvenueEastbound slip ramp exit to Oakland Avenue eastbound; access to Forest Park and the Saint Louis Zoo
36A Kingshighway BoulevardAccess to Barnes-Jewish Hospital, St. Louis Children's Hospital, Forest Park, the Missouri Botanical Garden, Ranken Technical College, the St. Louis Science Center, and St. Louis Community College
36BBoyle Avenue / Tower Grove AvenueBoyle Avenue only westbound
36CVandeventer AvenueEastbound exit and westbound entrance; access to the Missouri Botanical Garden
37AMarket Street / Bernard StreetEastbound exit and westbound entrance
37B Grand BoulevardEastbound exit and westbound entrance; access to Saint Louis University Hospital
38AForest Park Avenue / Grand BoulevardWestbound exit and eastbound entrance; access to Forest Park, Chaifetz Arena and Washington University
38BChestnut Street at 20th Street / Market Street at 21st StreetChestnut Street and 20th Street signed eastbound only; Market Street and 21st Street signed westbound only; portion of never-completed Missouri State Route 755; removed 2020 for construction of St. Louis City stadium
38CJefferson AvenueEastbound exit and westbound entrance
39A22nd Streetaccess to St. Louis City stadium and St. Louis Union Station
39B14th StreetEastbound exit and westbound entrance; access to the Enterprise Center and the Stifel Theatre
39C11th StreetEastbound exit and westbound entrance; access to Busch Stadium
40B6th StreetEastbound exit and westbound entrance
40A9th Street / Tucker BoulevardWestbound exit only; access to Busch Stadium
40C

 I-44 west / I-55 south – Memphis, Tulsa		Western terminus of concurrency with I-55; westbound exit and eastbound entrance
40


 I-44 east to I-70 west / Walnut Street – Kansas City		Westbound exit and eastbound entrance; former I-70; access to St. Louis Lambert International Airport
Mississippi RiverPoplar Street Bridge
–




 I-55 north / I-64 east / US 40 east to I-70 east – Illinois		Continuation into Illinois
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

[edit]
  1. ^ a b c d "Overview map of US 40 (MO)" (Map). Google Maps. Retrieved June 16, 2023.
  2. ^ a b c d Rand McNally (2013). "Missouri" (Map). The Road Atlas (2013 Walmart ed.). c. 1:1,584,000. Chicago: Rand McNally. pp. 58–59. §§ E9–G18. ISBN 0-528-00626-6.
  3. ^ Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.
  4. ^ Rand McNally (1927). "Rand McNally Junior Road Map: Missouri" (Map). Rand McNally Road Atlas. 1: 1,800,000. Chicago: Rand McNally. pp. 56–57. Retrieved June 16, 2023 – via David Rumsey Map Collection.
  5. ^ Missouri State Highway Commission (1926). Map of Missouri Showing State Road System, Route Numbers, Road Conditions and Points of Interest (Map) (1926 ed.). Jefferson City: Missouri State Highway Commission. Retrieved June 16, 2023.
  6. ^ Missouri State Highway Commission (1941). Missouri 1941 Highway Map (Map) (1941 ed.). Jefferson City: Missouri State Highway Commission. Retrieved June 17, 2023.
  7. ^ Executive Committee (June 28, 1939). "Addenda to Minutes of Executive Committee" (PDF) (Report). Washington, DC: American Association of State Highway Officials – via Wikimedia Commons.
  8. ^ Naffziger, Chris (11 November 2020). "In 1951, city planners plotted out new interstates to accommodate the growing population. What St. Louis ended up with looked very different". www.stlmag.com. Retrieved June 18, 2023.
  9. ^ "85 years ago, the first stages of Highway 40 opened. Here's what it looked like". STLtoday.com. 20 July 2022. Retrieved June 18, 2023.
  10. ^ O'Neil, Tim (19 July 2022). "In 1937, motorists in St. Louis got their first superhighway". STLtoday.com. Retrieved June 18, 2023.
  11. ^ "St. Louis prepares for I-64 shutdown". Columbia Missourian. 20 July 2008. Retrieved June 18, 2023.
  12. ^ O’Neil, Tim (16 May 2023). "How the growth in St. Louis suburbs exploded after World War II". STLtoday.com. Retrieved June 18, 2023.
  13. ^ Missouri State Highway Commission (1965). Missouri Highway Map (Map) (1965 ed.). Jefferson City: Missouri State Highway Commission. y inset.
  14. ^ Missouri State Highway Commission (1966). 1966 Official Highway Map (Map) (1966 ed.). Jefferson City: Missouri State Highway Commission. y inset.
  15. ^ Missouri State Highway Commission (1967). 1967 Official Highway Map (Map) (1967 ed.). Jefferson City: Missouri State Highway Commission. y inset.
  16. ^ Missouri State Highway Commission (1968). 1968 Official Highway Map (Map) (1968 ed.). Jefferson City: Missouri State Highway Commission. y inset.
  17. ^ Missouri State Highway Commission (1970). 1970 Official Highway Map (Map) (1970 ed.). Jefferson City: Missouri State Highway Commission. y inset.
  18. ^ Missouri State Highway Commission (1971). 1971 Official Highway Map (Map) (1971 ed.). Jefferson City: Missouri State Highway Commission. y inset.
  19. ^ Special Committee on U.S. Route Numbering (May 25, 1987). "Route Numbering Committee Agenda" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials – via Wikimedia Commons.
  20. ^ Missouri Highway and Transportation Commission (1988). Official Highway Map (Map) (1987-1988 ed.). Jefferson City: Missouri Highway and Transportation Department. y inset.
  21. ^ Missouri Highway and Transportation Commission (1991). 1991-92 Official Highway Map (Map) (1991-1992 ed.). Jefferson City: Missouri Highway and Transportation Department. y inset.
  22. ^ Missouri Department of Transportation (2002). Official Highway Map 2001-2002 (Map) (2001-2002 ed.). Jefferson City: Missouri Department of Transportation.
  23. ^ Missouri Department of Transportation (2004). 2004 Official Highway Map (Map) (2004 ed.). Jefferson City: Missouri Department of Transportation.
  24. ^ Missouri Department of Transportation (2012). Official Highway Map 2010-2012 (Map) (2010-2012 ed.). Jefferson City: Missouri Department of Transportation.
  25. ^ Missouri Department of Transportation (2013). Official Highway Map 2013-2014 (Map) (2013-2014 ed.). Jefferson City: Missouri Department of Transportation.
  26. ^ "History of Boone Bridge & its future". ksdk.com. Retrieved June 19, 2023.
  27. ^ Uptergrove, Kate (17 November 2015). "Daniel Boone Bridge section to be razed after almost 80 years of service". MidRiversNewsMagazine.com. Retrieved June 19, 2023.
  28. ^ "I-64 Daniel Boone Bridge Replacement Project, Missouri, US - Verdict Traffic". www.roadtraffic-technology.com. Retrieved June 19, 2023.
  29. ^ "The New I-64". Missouri Department of Transportation. Retrieved June 17, 2023.
  30. ^ Hale, Tom (11 August 2010). "Reconstructing I-64 In St. Louis". Building Design + Construction. Retrieved June 17, 2023.
  31. ^ Missouri Department of Transportation (June 16, 2023). MoDOT HPMAPS (Map). Missouri Department of Transportation. Retrieved June 16, 2023.
  32. ^ "This week on Highway 40". St. Louis Post Dispatch. August 20, 2007. pp. C3. Retrieved April 22, 2021.
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