 Interstate 474 | ||||
|---|---|---|---|---|
 I-474 highlighted in red | ||||
| Route information | ||||
| Auxiliary route ofI-74 | ||||
| Maintained byIDOT | ||||
| Length | 14.88 mi[1] (23.95 km) | |||
| Existed | 1979[2][3]–present | |||
| NHS | Entire route | |||
| Major junctions | ||||
| West end |   I-74 /IL 6 inPeoria | |||
| Major intersections |  US 24 at theBartonville–Peoria line US 24 /IL 29 inCreve Coeur | |||
| East end | I-74 inEast Peoria | |||
| Location | ||||
| Country | United States | |||
| State | Illinois | |||
| Counties | Peoria,Tazewell | |||
| Highway system | ||||
| ||||
Interstate 474 (I-474) is anInterstate Highway loop route that provides a southwestern bypass around the north-centralIllinois city ofPeoria. I-474's parent Interstate isI-74. As the first digit of the Interstate's number is even, it follows the established convention of providing a loop around a city. I-474 is 14.88 miles (23.95 km) long. I-474 is currently the highest numbered route in the state of Illinois.,[1] but will be surpassed byI-490 when that road is completed in 2027. It is also, excluding the proposedI-274 in North Carolina, the only auxiliary route of I-74.
I-474 is a modern, Interstate-standard four-lane freeway for its entire length. Prior to 2006, through truck traffic onI-74 was instructed to use I-474. This is because prior to its 2004–2007 reconstruction, I-74 was significantly below Interstate standard, having numerous 15-mile-per-hour (24 km/h) on- and offramps, extremely short merging space for onramps (some less than 500 feet (150 m) in length),[4]and a 50-mile-per-hour (80 km/h) speed limit through downtown Peoria.[citation needed]
TheIllinois Route 116 (IL 116) access interchange at Maxwell Road has been indicated as the eastern terminus for the Quincy to Peoria expressway now known as theIL 336 project.[5]
The western terminus of I-474 is at I-74 exit 87A. The eastern terminus of I-474 is at I-74 exit 99. North of the western terminus, the road continues asIL 6 with a new series of exit numbers.
I-474 was constructed through the mid-1970s. The now-namedShade–Lohmann Bridge was erected in 1973. During that year, $30.1 million (equivalent to $162 million in 2024[6]) was allocated for acquisition ofright-of-way, grading work, and overpass/bridge construction across the whole length of the highway.[7]
| County | Location | mi | km | Exit | Destinations | Notes | |
|---|---|---|---|---|---|---|---|
| Peoria | | 0.00 | 0.00 |  IL 6 north –Chillicothe | Continuation north beyond I-74 | ||
| 0 | I-74 –Peoria,Moline,Rock Island | Western terminus; signed as exits 0A (east) and 0B (west); I-74 exit 87A | |||||
| Bellevue | 3.78 | 6.08 | 3A |   ToIL 116 –Farmington | |||
| | 5.34 | 8.59 | 5 |   CR R49 (Airport Road) | ServesPeoria International Airport | ||
| Bartonville–Peoria line | 7.09 | 11.41 | 6 |  US 24 west (Adams Street) –Bartonville | West end of US 24 overlap; signed as exits 6A (US 24 west) & 6B (Adams Street) westbound | ||
| Illinois River | 8.83– 9.04 | 14.21– 14.55 | Shade–Lohmann Bridge | ||||
| Tazewell | Creve Coeur | 9.57 | 15.40 | 9 |  US 24 east /IL 29 –East Peoria,Pekin | East end of US 24 overlap | |
| East Peoria | 14.88 | 23.95 | 15 |    I-74 toI-155 south –Peoria,Indianapolis,Lincoln | Eastbound exit and westbound entrance; eastern terminus and signed as exit 15 (west); I-74 exit 99 | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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