Illinois Route 90 is an east–west state highway in northern Peoria County

Peoria County, Illinois

Peoria County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 186,494, which is an increase of 1.7% from 183,433 in 2000. Its county seat is Peoria....

 in central Illinois

Illinois

Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

. It runs from Illinois Route 78

Illinois Route 78

Illinois Route 78 is a major north–south highway in western Illinois. It runs from Illinois Route 104 northwest of Jacksonville north to Highway 78 at the Wisconsin state line north of Warren...

 in Laura

Laura, Illinois

Laura is an unincorporated community in Peoria County, Illinois, United States. Laura is located along a railroad line east of Williamsfield. Laura has a post office with ZIP code 61451....

 to Illinois Route 40

Illinois Route 40

Illinois Route 40 is a north–south route in central portion of the U.S. state of Illinois. It runs from Interstate 74 in East Peoria north to Illinois Route 78 at Mt. Carroll, just south of U.S. Route 52 and Illinois Route 64. This is a distance of ....

 in Edelstein

Edelstein, Illinois

Edelstein is an unincorporated village just off Illinois Route 40 in Peoria County, Illinois, north of Peoria City Hall, approximately north of the city limits of Peoria, and west of Chillicothe, Illinois....

. This is a distance of 15.8 miles (25.43 km).

Route description

Illinois 90 is a rural, undivided two-lane surface road for its entire length. It crosses the towns of Monica and Princeville

Princeville, Illinois

Princeville is a village in Peoria County, Illinois, United States. The population was 1,621 at the 2000 census. It is part of the Peoria, Illinois Metropolitan Statistical Area.-Geography:Princeville is located at ....

, overlapping Illinois Route 91

Illinois Route 91

Illinois Route 91 is a rural state road in central Illinois. It runs from the northwest edge of Peoria at U.S. Highway 150 to U.S. Highway 34 south of Kewanee. Illinois 91 is long.- Route description :...

 from Princeville east for 4 miles (7 km).

History

SBI Route 90 ran from Laura in Peoria County to Sparland

Sparland, Illinois

Sparland is a village in Marshall County, Illinois, United States. The population was 504 at the 2000 census. It is part of the Peoria, Illinois Metropolitan Statistical Area.-Geography:...

 in Marshall County

Marshall County, Illinois

The median income for a household in the county was $41,576, and the median income for a family was $48,061. Males had a median income of $35,765 versus $21,452 for females. The per capita income for the county was $19,065...

 along current Illinois 90, Illinois Route 17

Illinois Route 17

Illinois Route 17 is a rural, arterial east–west state road that runs east from a former ferry crossing in New Boston along the banks of the Mississippi River to State Road 2 west of Lowell, Indiana. It is long.- Route description :...

 and Illinois Route 40

Illinois Route 40

Illinois Route 40 is a north–south route in central portion of the U.S. state of Illinois. It runs from Interstate 74 in East Peoria north to Illinois Route 78 at Mt. Carroll, just south of U.S. Route 52 and Illinois Route 64. This is a distance of ....

. This was changed to its current alignment in 1938.