Illinois Route 177 is an east–west state road in southern 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 159

Illinois Route 159

Illinois Route 159 is a north–south state road in southwestern Illinois. Its southern terminus is at Illinois Route 3 and Illinois Route 154 in Red Bud and its northern terminus at Illinois Route 16 in Royal Lakes. This is a distance of ....

 in Belleville

Belleville, Illinois

Belleville is a city in St. Clair County, Illinois, United States. As of the 2010 census, the city has a population of 44,478. It is the eighth-most populated city outside of the Chicago Metropolitan Area and the most populated city south of Springfield in the state of Illinois. It is the county...

 to U.S. Route 51

U.S. Route 51

U.S. Route 51 is a north–south United States highway that runs for 1,286 miles from the western suburbs of New Orleans, Louisiana to within of the Wisconsin-Michigan border. Much of the highway in Illinois and southern Wisconsin runs parallel to or overlaps Interstate 39...

 in Irvington

Irvington, Illinois

Irvington is a village in Washington County, Illinois, United States. The population was 659 at the 2010 census.-Geography:Irvington is located at ....

. This is a distance of 47.59 miles (76.59 km).

Route description

Illinois 177 overlaps Illinois Route 160

Illinois Route 160

Illinois Route 160 is a north–south highway in southwestern Illinois. Its southern terminus is at Illinois Route 15 south of Addieville, and its northern terminus is at Illinois Route 140 east of Alhambra. This is a distance of .- Route description :...

 for about 9 miles (14 km) from south of New Baden

New Baden, Illinois

New Baden is a village in Clinton County, Illinois, United States. The population was 3,349 at the 2010 census.-Geography:New Baden is located at ....

 to Okawville

Okawville, Illinois

Okawville is a village in Washington County, Illinois, United States. The population was 1,434 at the 2010 census.-Geography:Okawville is located at...

.

History

SBI Route 177 originally ran from New Minden

New Minden, Illinois

New Minden is a village in Washington County, Illinois, United States. The population was 215 at the 2010 census. It possessed a post office from 1868 to 1976.-Geography:New Minden is located at ....

 to Okawville. It was extended east to Irvington in 1953, replacing Illinois Route 153

Illinois Route 153

Illinois Route 153 is a north–south state road in southern Illinois. It runs from Illinois Route 154 in Eden to Illinois Route 15 in rural Washington County. This is a distance of .- Route description :...

. In 1967, it was extended west to Belleville on an old routing of Illinois Route 15

Illinois Route 15

Illinois Route 15 is an east–west highway with its western terminus at Illinois Route 3, U.S. Route 40, I-55, I-64, and I-70 and its eastern terminus at Wabash River at the Illinois/Indiana Border where it meets Indiana 64. This is a distance of ....

.