Illinois Route 3 is a state highway that runs through the southwestern part of Illinois. It stretches approximately 90 miles, connecting the city of East St. Louis to Chester, along the Mississippi River. The route serves as a vital transportation link for local communities and provides access to various attractions and businesses. The highway is primarily a two-lane road, with some sections featuring additional lanes for safety and efficiency. It passes through several towns, including Belleville and Red Bud, and offers scenic views of the surrounding landscapes. Illinois Route 3 plays an important role in regional travel and commerce.