Illinois 141 serves as a connector between southeastern Illinois and the greater Evansville, Indiana area. It is also the most southerly bridge that is a state highway over the Wabash River; the next crossing into another state is along Illinois Route 13, but that goes over the Ohio River into Kentucky. In addition, Illinois 141 is the most southerly crossing into Indiana.
Illinois 141 runs east from U.S. 45 to Omaha at Illinois 1; the only other area it serves is New Haven.
Illinois 141 is a two-lane surface road for its entire length. Part of Illinois 141 forms the border between White and Gallatin counties.
History
SBI Route 141 originally ran from Norris City (further north on Illinois 1) to New Haven. In 1935, the 141 numbering was dropped from Illinois 1. In 1956, Illinois 141 was extended east to the White County Toll Bridge. The road was completed in 1967 when it was extended west to U.S. 45.