Interstate 180 at Illinois
| I-180 | |||
| Get started | Princeton | ||
| End | hemp | ||
| Length | 21 km | ||
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Interstate 180 or I -180 is a short Interstate Highway in the north of the US state of Illinois. The highway forms an insignificant branch of Interstate 80 at Princeton, and runs through wooded and hilly areas to the village of Hennepin. The highway has 2×2 lanes.
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Travel directions
I-180
I-180 begins at the village of Hennepin as a continuation of State Route 71 and crosses the Illinois River. West of the river it intersects with State Route 29, which heads south to Peoria. Here, I-180 turns north and continues through an area of woods and meadows to a trumpet interchange with Interstate 80 at Princeton.
History
The highway was built to connect a steel mill in Hennepin to Interstate 80. The highway opened in 1969 and the steel mill closed that same year, making I-180 one of the most useless highways. Between 2002 and 2009 the factory was in use for some time, but has since been empty again.
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Congestion
There is hardly any traffic on I-180, so congestion is very exceptional.
Connections & traffic intensities
| # | destination | AADT |
| Hennepin, Lacon | 2,200 | |
| Bureau Junction | 2,300 | |
| Peoria | 3,300 | |
| Princeton | 2,000 | |
| Princeton, Spring Valley | 3,000 | |
| Des Moines, Chicago |
Interstate 190 at Illinois
| I-190 | |||
| Get started | Chicago O’Hare Airport | ||
| End | Chicago | ||
| Length | 3 mi | ||
| Length | 5 km | ||
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Interstate 190 or I -190 is a short Interstate Highway in the US state of Illinois. Located in the metropolitan area of Chicago, the highway connects the city of Chicago via Interstate 90 to the city’s airport, O’Hare Airport. The road is the westernmost portion of the Kennedy Expressway. The route is 5 kilometers long.
Travel directions
The highway starts in the middle of the airport, near the terminals. It is the only access road from the airport. One passes under two taxiways from the airport, and the highway has 2×3 lanes here. One then crosses US 12, the airport’s eastern perimeter, and then Interstate 294, Chicago ‘s first western perimeter. After that, there is an entire light rail shunting yard in the median strip, and I-190 merges with Interstate 90 toward downtown Chicago.
History
In 1960 the highway opened as State Highway 194. In 1971 it was renumbered to State Highway 594 and in 1978 to I-190.
Lane Configuration
| From | Unpleasant | Lanes |
| I-90 | Mannheim Road | 2×2 |
| Mannheim Road | O’Hare Airport | 2×3 |
Connections & traffic intensities
Exit numbering increases westward, while mileposts increase eastward, an unusual anomaly in the United States.
| # | destination | AADT |
| – | O’Hare International Airport | 41,900 |
| – | International Terminal | 74,700 |
| 2 | Chicago, Mannheim Road | 74,700 |
| 1D | Gary | 121,000 |
| 1C | Milwaukee, Rockford | 121,000 |
| 1 | Rosemont, River Road | 121,000 |
| – | Chicago |
Interstate 255 at Illinois
| I-255 | |||
| Get started | Mehlville | ||
| End | Alton | ||
| Length | 42 mi | ||
| Length | 67 km | ||
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Interstate 255 or I -255 is an Interstate Highway in the US states of Missouri and Illinois. The highway forms an eastern bypass of St. Louis. Although St. Louis is in Missouri, most of I-255 is located in Illinois. The route is 67 kilometers long.
Travel directions
In Mehlville, I-255 begins at a major interchange with I-55 and I-270. Interstate 55 runs from Memphis to St. Louis, and Interstate 270 forms the western and northern beltways of St. Louis. The highway is initially very wide, with 6+5 lanes. There are 2×3 lanes left when I-255 crosses the Mississippi River, also the state line with Illinois, via the Jefferson Barracks Bridge. At Columbia, the highway turns north, passing through a number of run-down and depleted suburbs on the Illinois side of the St. Louis metropolitan area.. The main suburb is East St. Louis, where the 2×3 lane highway runs along the east side. At Caseyville, one crosses Interstate 64, which runs from St. Louis to Louisville, Kentucky. Shortly afterwards, at Collinsville, one crosses the I-55 and I-70 which have a double numbering. Both highways come from St. Louis, and Interstate 55 runs to the state capital Springfield and Chicago, while Interstate 70 runs to Indianapolis. Not far after that, I-255 ends at Interstate 270, St. Louis’s northern beltway. Straight ahead is State Route 255, as a highway to the northern suburb of Alton. This route is 38 kilometers long.
History
On September 30, 1983, the first bridge over the Mississippi River opened at Mehlville, the second in 1992. In 1986, I-255 was completed. Unlike the western ring of St. Louis, the eastern ring hardly runs through any urbanized area. The highway only serves some loose suburbs.
In 2020, the East St. Louis section was renovated by closing the highway completely between I-70 and State Route 15 for 9 months. The closure began in February 2020 and was completed in November 2020.
Lane Configuration
With about 40,000 to 50,000 vehicles in 2×3 lanes, I-255 is considered a quiet highway with a lot of overcapacity.
| From | Unpleasant | Lanes | Comments |
| exit 0 | Exit 2 | 2×4 | Missouri |
| Exit 2 | Exit 30 | 2×3 | Illinois |
Congestion
I-255 is not very traffic-sensitive and adequately developed. The busiest part in Missouri has 100,000 vehicles per day on 2×4 lanes. Elsewhere the intensities are low.
Connections & traffic intensities
| # | destination | AADT |
| 1 | St. Louis, Memphis | 100,200 |
| 1C | St. Louis, Lemay Ferry Road | |
| 1D | St. Louis, Lemay Ferry Road | |
| 2 | St. Louis, Telegraph Road | |
| 3 | St. Louis, Koch Road | 47,300 |
| Missouri–Illinois state line | ||
| 6 | columbia | 41,700 |
| 9 | dupo | 45,600 |
| 10 | Cahokia, East St. Louis | 36,600 |
| 13 | Cahokia | 38,700 |
| 15 | Mousette Lane | 42,800 |
| 17 | Centerville, Missouri Avenue | 44,900 |
| 19 | Centerville, State Street | 44,800 |
| 20 | St. Louis, Louisville | 46,300 |
| 24 | Collinsville, Collinsville Road | 48,000 |
| 25 | Indianapolis, Chicago, St. Louis | 44,400 |
| 26 | Horseshoe Lake Road | 43.100 |
| 29 | Granite City, Glen Carbon | 40,700 |
| 30 | Indianapolis, Kansas City | 31,100 |
