Interstate 70 in Illinois Article

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Interstate 70 marker

Interstate 70
I-70 highlighted in red
Route information
Maintained by IDOT
Length160 mi [1] (260 km)
Major junctions
West end I-70 at the Missouri state line in Brooklyn, Illinois
 
East end US 40 / I-70 near Marshall
Location
Counties St. Clair, Madison, Bond, Fayette, Effingham, Cumberland, Clark
Highway system
IL 68 IL 70

Interstate 70 (I-70) is a part of the Interstate Highway System that travels from Cove Fort, Utah to Baltimore, Maryland. In the U.S. state of Illinois, the Interstate highway travels 160 miles (260 km) from the Missouri state line at the Mississippi River in Brooklyn east to the Indiana state line near Marshall. I-70, which travels in a generally east-northeast direction across the state parallel to and sometimes concurrent with U.S. Route 40 (US 40), connects St. Louis and the Metro East region of Illinois with the Indiana cities of Terre Haute and Indianapolis, as well as many small towns along the northern edge of Southern Illinois and the southern tier of the Central Illinois region. Within Metro East, I-70 has interchanges with I-64 in East St. Louis and I-55 near Troy. I-70 also has interchanges with the two Interstates that form St. Louis's beltway: I-255 near Collinsville and I-270 at the I-55 junction near Troy. East of the Metro East region, I-70 meets US 51 in Vandalia and both I-57 and US 45 in Effingham. Like all Interstate highways, I-70 is a part of the National Highway System for its entire length in Illinois. [2]

Route description

I-70 enters Illinois from St. Louis by crossing the Mississippi River on the four lane Stan Musial Veterans Memorial Bridge into the village of Brooklyn in St. Clair County. The first interchange is for IL 3, which heads south toward Cahokia; the interstate has an interchange with I-64 towards Fairview Heights, and I-55, which it joins and heads northeast. [1]

I-55/I-70 have an interchange with IL 203 before entering Madison County. The interstate has a diamond interchange with IL 111 just north of Fairmont City and a partial one with Black Lane before the highway's interchange with I-255 west of Collinsville. I-55/I-70 curve northeast around Collinsville and leave the floodplain of the Mississippi River at the interchange with IL 157 (Bluff Road), where the highway reduces to four lanes. The Interstate passes between Collinsville and Maryville, which are both served by the next interchange with IL 159 (Vandalia Street/Maryville Road). US 40 leaves the freeway at a trumpet interchange southwest of Troy. I-55/I-70 curve to the north and meet IL 162 (Edwardsville Road) before they diverge at their interchange with I-270. The interchange, exit 20, is a full cloverleaf except for a flyover ramp for westbound I-70 to join southbound I-55. Westbound I-70's interchange is exit 15; the exits east of that are numbered as if I-70 had run along I-270 for the first few miles in Illinois. [1]

I-70 meets IL Routes 4 and 143 to the south and east of Marine before crossing Highland Silver Lake. US 40 rejoins I-70 near Pierron and the two highways travel concurrently into Bond County, where they separate at Pocahontas. Here, I-70 crosses Shoal Creek. US 40 continues to closely parallel I-70 until the next interchange, which is a connector to US 40 southwest of Greenville. The two highways pass to the south of Greenville, which is also served via an interchange with IL 127. East of Mulberry Grove, I-70/US 40 cross to the north side of the east–west rail line and again closely parallel each other into Fayette County. I-70 passes along the northern edge of Vandalia, with access to the county seat of Fayette County provided by an interchange with US 40 on the west side and US 51 (Kennedy Boulevard) to the north. Just east of US 51, I-70 crosses the Kaskaskia River. I-70 crosses to the south side of both the rail line and US 40 (Cumberland Road) between Bluff City and Brownstown. The Interstate passes to the south of St. Elmo before entering Effingham County to the west of an interchange with IL 128 at Altamont. [1]

Immediately after crossing the Little Wabash River, I-70 joins I-57 in a concurrency to pass around the west and north sides of Effingham. The two Interstates use I-57's exit sequence during the concurrency. I-57/I-70 have interchanges with Fayette Avenue, IL 32 and IL 33 (Keller Drive), and US 45 (Third Street) before diverging near Teutopolis. Just east of Montrose, I-70 enters Cumberland County, where the Interstate has one interchange with IL 130 (Haughton Highway) at Greenup, where the highway crosses the Embarras River. The Interstate continues into Clark County for an interchange with IL 49 north of Casey. I-70 crosses the North Fork Embarras River north of Martinsville, then has an interchange with IL 1 north of the county seat of Marshall. Northeast of Marshall, US 40 rejoins I-70 in a concurrency. The highways cross the Indiana state line west of Terre Haute while closely paralleling the original alignment of US 40, Illiana Drive. [1]

Exit list

CountyLocationmikmExitDestinationsNotes
Mississippi River0.000.00 I-70 west – Kansas CityContinuation into Missouri
Stan Musial Veterans Memorial Bridge; Illinois-Missouri state line
St. Clair Fairmont City2 To IL 3 / Fairmont City Boulevard
East St. Louis3 I-64 east – LouisvilleNo westbound exit; I-64 exit 3B
I-55 / IL 3 / Great River Road south / I-64 / US 40 west – St. LouisWestern end of I-55 concurrency; westbound exit and eastbound entrance; former I-70 west; I-55 exit 3B
3C St Louis MetroLink Logo.svg Exchange AvenueWestbound exit and eastbound entrance; access to Emerson Park MetroLink station
Canteen Township4 IL 203 (Collinsville Road) – Granite City, Fairmont CitySigned as 4A (south) and 4B (north) westbound
Madison Nameoki Township6 IL 111 / Great River Road – Wood River, Washington Park
9Black LaneEastbound exit and westbound entrance
Collinsville Township10 I-255 / Interstate 270 – MemphisI-255 exit 25
11 IL 157 (Bluff Road) – Collinsville, Edwardsville
Maryville15 IL 159 (Vandalia Street/Maryville Road) – Collinsville, MaryvilleSigned as exits 15A (south) and 15B (north)
Troy17 US 40 – St. Jacob, HighlandEastern end of US 40 concurrency
18 IL 162 (Edwardsville Road) – Troy
Pin Oak Township19.030.6 I-55 north – Chicago, SpringfieldEastern end of I-55 concurrency; I-55 exit 20A; eastbound exit and westbound entrance
I-270 west – Kansas CityEastern terminus of I-270; westbound exit and eastbound entrance
Marine Township21 IL 4 – Staunton, Lebanon
24 IL 143 – Marine, Highland
Saline Township30 US 40 west / IL 143 (Steiner Road) – Pierron, HighlandWestern end of US 40 concurrency
Bond Old Ripley Township36 US 40 east (Pokey Road) – PocahontasEastern end of US 40 concurrency
Central Township41 To US 40 / Millersburg Road – Greenville
45 IL 127 – Greenville, Carlyle
Pleasant Mound Township52Mulberry Grove Road – Mulberry Grove, Keyesport
Fayette Vandalia Township61 US 40 – Vandalia
Vandalia63 US 51 (Kennedy Boulevard) – Vandalia, Pana
Otego Township68 US 40 (Cumberland Road) – Brownstown, Bluff City
St. Elmo76Interstate Drive – St. Elmo
Effingham Altamont82 IL 128 north (Main Street) – Altamont
Summit Township92 I-57 south – MemphisWestern end of I-57 concurrency; I-57 exit 157
Effingham159Fayette Avenue – EffinghamExits use I-57 exit numbers
160 IL 32 / IL 33 (Keller Drive)
162 US 45 (Third Street) – Sigel
Teutopolis Township98 I-57 north – ChicagoEastern end of I-57 concurrency; I-57 exit 163
Montrose105Spring Creek Road – Montrose
Cumberland Greenup119 IL 130 (Haughton Highway) – Greenup, Charleston
Clark Casey Township129 IL 49 – Casey, Kansas
Martinsville136Cleone Road – Martinsville
Marshall Township147 IL 1 – Marshall, Paris
Wabash Township154 US 40 westWestern end of US 40 concurrency
I-70 / US 40 east – Terre Haute, IndianapolisContinuation into Indiana
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Auxiliary routes

I-70 has one auxiliary route in Illinois:

  • I-270 - Forms the northern and western two-thirds of the beltway around the St. Louis Metro Area (the eastern third is signed as I-255)

References

  1. ^ a b c d e Google (2011-01-24). "Interstate 70 in Illinois" (Map). Google Maps. Google. Retrieved 2011-01-24.
  2. ^ National Highway System: Illinois (PDF) (Map). Federal Highway Administration. July 2003. Retrieved 2011-01-25.

Route map:

KML is from Wikidata


Interstate 70
Previous state:
Missouri
Illinois Next state:
Indiana