Interstate 55 in Missouri

In the U.S. state of Missouri, Interstate 55 (I-55) runs from the Arkansas state line to the Poplar Street Bridge over the Mississippi River in St. Louis.

Interstate 55
I-55 highlighted in red
Route information
Maintained by MoDOT
Length210.45 mi[1] (338.69 km)
Major junctions
South end I-55 at Arkansas state line
North end I-55 / I-64 / US 40 / I-44 in St. Louis
CountiesPemiscot, New Madrid, Scott, Cape Girardeau, Perry, Ste. Genevieve, Jefferson, St. Louis, City of St. Louis
Highway system
US 54US 56

Route description

Interstate 55 enters Missouri at the Arkansas border near Cooter. It runs northward through mostly flat land in the Bootheel, where it has an interchange with U.S. Route 412 and Interstate 155. The highway continues over bumpy land through or near the towns of Hayti, Portageville, and New Madrid before reaching an interchange with U.S. Route 60 and Interstate 57 just south of Sikeston. The next interchange, U.S. Route 62, provides access into the city of Sikeston and one of its most popular attractions, Lambert's Cafe, the "Home of the Throwed Rolls".

North of Sikeston, I-55 begins to traverse rolling terrain on its way to Cape Girardeau. Exit 95, Route 74 east, provides direct access to the Bill Emerson Memorial Bridge into southern Illinois. The heart of the city of Cape Girardeau as well as Southeast Missouri State University can be reached by taking either Exit 96 or Exit 99.

I-55 then goes through rural areas again as it makes a north-northwesterly run through the towns of Perryville and Ste. Genevieve before entering the southern reaches of the St. Louis metro area at the interchange with U.S. Route 67 and the Twin Cities of Festus and Crystal City. U.S. Route 61 and 67 run concurrently immediately east of I-55 nearly due north through the Jefferson County towns of Herculaneum, Pevely (where the interstate expands from 4 lanes to 6), Barnhart (and then to 8), Imperial, and finally Arnold before crossing the Meramec River into St. Louis County.

From Richardson Road in Arnold to I-270, I-55 is 10 lanes wide. The interstate narrows back down to 8 lanes past I-270, through southern St. Louis County, and into the city of St. Louis. In the last few miles of I-55 in the state of Missouri, there is an interchange/brief overlap with Interstate 44 before reaching the Poplar Street Bridge crossing into Illinois.


Sponsorship controversy

The white supremacy group Ku Klux Klan began fighting several court battles with the state of Missouri after the state disputed its right to sponsor a stretch of freeway in Saint Louis County and Jefferson County, near St. Louis. In March 2001, after a U.S. District Court judge found that blocking the Klan's sponsorship was unconstitutional, the Court of Appeals ruled that the state must erect signs announcing the group's sponsorship. However, the Missouri Legislature later voted to rename the stretch of I-55 the "Rosa Parks Freeway" in honor of the Montgomery civil rights hero who began the Montgomery bus boycott. When asked how she felt about this honor, she is reported to have commented, "It is always nice to be thought of."[2] The Klan were eventually dropped from the scheme on April 4, 2001, on the grounds that for the duration of their sponsorship, they had not once cleaned the freeway.

Exit list

Pemiscot0.0000.000 I-55 south MemphisContinuation into Arkansas
1.1321.8221 Route O to US 61 Holland
4.4877.2214 Route E Cooter, Holland
7.97712.8388 US 61 south / Route 164 SteeleSouthern end of US 61 overlap
14.48323.30814 Route U / Route H / Route J Caruthersville, Braggadocio
17.64428.39517 I-155 east / US 412 Caruthersville, Dyersburg, Hayti, KennettSigned as exits 17A (east) and 17B (west); I-155/US 412 exits 1A-B
Hayti19.07430.69719 Route 84 Hayti, Caruthersville
27.60744.42927 Route K / Route A / Route BB Wardell
New MadridPortageville32.90552.95532 US 61 north / Route 162 PortagevilleNorthern end of US 61 overlap
Marston40.98465.95740 Route EE (St. Jude Road) Marston
New Madrid44.91372.28044 BL I-55 north / US 61 / US 62 New Madrid, Howardville
49.63779.88349 BL I-55 south / US 61 / US 62 New Madrid, Kewanee
52.16583.95152 Route P Kewanee
58.22193.69858 Route 80 Matthews, East Prairie
ScottSikeston66.177106.50266 I-57 north / US 60 Dexter, Poplar Bluff, ChicagoSigned as exits 66A (north/east) and 66B (west); I-57/US 60 exits 1A-B; current southern terminus of I-57
67.486108.60867 US 62 Sikeston, Bertrand
69.379111.65569 Route HH Miner, Sikeston
80.956130.28680 Route 77 Benton, Diehlstadt
Scott City89.717144.38689 US 61 south / Route M / Route K Scott City, ChaffeeSouthern end of US 61 overlap
91.811147.75591 Route AB Cape Girardeau Regional Airport
Cape GirardeauCape Girardeau93.504150.48093 BL I-55 north / US 61 north / Route 74 west Dutchtown, Cape GirardeauNorthern end of US 61 overlap; southern end of Route 74 overlap; signed as exits 93A (west) and 93B (north) northbound
95.245153.28295 Route 74 east to IL 146 Cape GirardeauNorthern end of Route 74 overlap
96.463155.24296 Route K Cape Girardeau, Gordonville
99.859160.70799 BL I-55 / US 61 / Route 34 Cape Girardeau, Jackson
102.304164.642102East Main Street, LaSalle Avenue
105.758170.201105 BL I-55 south / US 61 Fruitland, Jackson
111.292179.107111 Route E Oak Ridge
118.049189.981117 Route KK Old Appleton
Perry124.037199.618123 Route B Biehle
Perryville129.869209.004129 Route 51 Perryville
135.589218.209135 Route M Brewer
Ste. Genevieve141.212227.259141 Route Z St. Mary
143.816231.449143 Route N / Route J / Route M Ozora
150.411242.063150 Route 32 / Route B / Route A Ste. Genevieve, Farmington
154.984249.423154 Route O Ste. Genevieve, Rocky Ridge
157.785253.930157 Route Y Bloomsdale
162.123260.912162 Route DD / Route OO
Jefferson165.263265.965165 Route TT
171.087275.338170 US 61
Crystal City174.470280.782174 BL I-55 north / US 67 to US 61 Crystal City, Farmington, Bonne TerreSigned as exits 174A (north) and 174B (south)
Festus175.843282.992175 Route A Hillsboro, Festus
Herculaneum178.742287.657178 BL I-55 south (McNutt Street) Herculaneum
Pevely180.957291.222180 Route Z Pevely
Barnhart185.272298.166185 Route M Barnhart, Antonia
Imperial186.892300.774186Imperial Main Street
Arnold190.188306.078190Richardson RoadSigned as Richardson Road/Vogel Road southbound
192.087309.134191 Route 141 Arnold, Fenton
St. Louis193.475311.368193Meramec Bottom Road
195.409314.480195Butler Hill Road
196.947316.955196 I-255 east / I-270 west Chicago, Kansas CityI-255/270 exits 1A-B.
197.519317.876197 US 61 / US 67 / US 50 (Lindbergh Boulevard)Southbound exit via exit 196
199.583321.198199Reavis Barracks Road
200.309322.366200Union RoadSouthbound exit and northbound entrance
201.122323.674201ABayless Avenue
City of St. Louis201.761324.703201BWeber RoadSouthbound exit and northbound entrance
202.229325.456202ACarondelet Boulevard, River City BoulevardNorthbound exit and southbound entrance
202.305325.578202BGermania AvenueSouthbound exit and northbound entrance
202.990326.681202CLoughborough Avenue
203.877328.108203Virginia Avenue, Bates Street
204.894329.7452044500 South Broadway
205.526330.762205Gasconade StreetSouthbound exit and northbound entrance
206.346332.082206APotomac StreetNorthbound exit and southbound entrance
206.597332.486206B3200 South BroadwayNorthbound exit and southbound entrance
206.952333.057206CArsenal Street
207.803334.427207A Historic US 66 (Gravois Avenue) / Route 30Northbound exit and southbound entrance; MO 30 unsigned
207.836334.480207Truman ParkwayNorthbound exit and southbound entrance
207.982334.715207B I-44 west Springfield, TulsaSigned as exit 207 southbound; southern end of I-44 overlap
208.040334.808290 Historic US 66 (Gravois Avenue) / Route 30, 12th StreetSouthbound exit and northbound entrance; MO 30 unsigned
208.614335.732208Park Avenue, 7th Street
209.315336.86040C I-64 west / US 40 west St. LouisSouthern end of I-64 / US 40 overlaps; southbound exit and northbound entrance
209.190336.659291A I-44 west to I-70 west Kansas CitySouthbound signed as exit 40B
Mississippi River209.689337.462Poplar Street Bridge; Missouri–Illinois state line
St. ClairEast St. Louis I-55 north / I-64 east / US 40 east to I-70 east IllinoisContinuation into Illinois
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Auxiliary routes

  • I-155: A spur running from I-55 in Hayti, MO to US-51 in Dyersburg, TN; overlaps with U.S. Route 412 for its entire length. Eight miles of this highway will be absorbed into the newly extended Interstate 69 in the future.
  • I-255: The eastern third of the beltway around the St. Louis Metro Area (with I-270 forming the remaining two-thirds)
  • BL I-55: I-55 has three business loops in Missouri.


  1. "Route Log and Finder List - Interstate System - table 1". Federal Highway Administration. October 31, 2002. Retrieved July 8, 2007.
  2. Scruggs, Yvonne (February 4, 2003). "Happy Birthday, Rosa Parks!". Women's eNews. Archived from the original on August 17, 2009. Retrieved September 19, 2011.
  3. Missouri Department of Transportation (September 6, 2016). MoDOT HPMAPS (Map). Missouri Department of Transportation. Retrieved September 6, 2016.

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