|Maintained by IDOT|
|Length||165.79 mi (266.81 km)|
|Existed||1926 – present|
|West end||US 50 / I-255 in Columbia|
| I-64 / I-255 in Washington Park
I-64 / IL 158 in O'Fallon
US 51 in Sandoval
I-57 in Salem
US 45 in Flora
|East end||US 50 in Lawrenceville|
In the U.S. state of Illinois, U.S. Route 50 is an east–west highway across the southern portion of the state. It runs from the Jefferson Barracks Bridge over the Mississippi River to Missouri east to the Red Skelton Memorial Bridge over the Wabash River to Indiana. This is a distance of 165.79 miles (266.81 km).
This section needs expansion. You can help by adding to it. (June 2008)
U.S. 50 runs east–west across the southern portion of the state, between Interstate 70 to the north and Interstate 64 to the south. Along many portions of U.S. 50, the road has been moved onto either a bypass or an expressway.
Much of U.S. Route 50 in Illinois, especially the section between Carlyle, Illinois and Vincennes, lies atop or adjacent to the trail taken by George Rogers Clark and his 170 volunteers in the forlorn-hope march on Vincennes in February 1779.
As of 2011, much of U.S. 50 is a two-lane highway, but portions around Lawrenceville, IL and Vincennes, IN are configured as a four-lane, limited access bypass, built to interstate standards in the 1960s. Another modern bypass portion between O'Fallon, IL and IL-127 shows evidence of a four-lane right of way as each bridge is paralleled by a second that remains unused and the graded road bed for additional lanes is visible. This is because it was originally meant to be the route of Interstate 64 until political leaders lobbied for and secured a more southerly route.
|Mississippi River||0.00||0.00||I-255 / US 50 continuation into Missouri|
|Monroe||||2.9||4.7||IL 3 south||Southern end of IL 3 concurrency|
|St. Clair||||7.2||11.6||IL 3 north – Cahokia||Northern end of IL 3 concurrency|
|East St. Louis||13.3||21.4||IL 15|
|16.6||26.7||I-64 west / I-255 north – St. Louis, Chicago||Northern end of I–255 concurrency; western end of I–64 concurrency|
|Fairview Heights||17.9||28.8||IL 157|
|O'Fallon||28.1||45.2||I-64 east / IL 158||Eastern end of I–64 concurrency|
|Lebanon||32.9||52.9||IL 4 south – Mascoutah||Southern end of IL 4 concurrency|
|33.5||53.9||IL 4 north||Northern end of IL 4 concurrency|
|Carlyle||57.2||92.1||IL 127 north||Northern end of IL 127 concurrency|
|58.3||93.8||IL 127 south||Southern end of IL 127 concurrency|
|Marion||Sandoval||72.4||116.5||US 51 south – Centralia||Southern end of US 51 concurrency|
|||72.6||116.8||US 51 north – Vandalia||Northern end of US 51 concurrency|
|Salem||80.4||129.4||I-57 – Mt. Vernon, Effingham|
|81.8||131.6||IL 37 – Mt. Vernon, Effingham|
|Clay||Flora||106.7||171.7||US 45 north – Effingham||Western end of US 45 concurrency|
|110.6||178.0||US 45 south – Fairfield||Eastern end of US 45 concurrency|
|Richland||||120.9||194.6||IL 250 east||Western terminus of IL 250|
|Olney||129.6||208.6||IL 250 west / IL 130||Western end of IL 250 concurrency|
|Lawrence||||142.2||228.8||IL 250 east||Eastern end of IL 250 concurrency|
US 50 Bus. east
|Western terminus of US 50 BUS|
|152.2||244.9||IL 1 – Lawrenceville, Marshall|
US 50 Bus. west
|Eastern terminus of US 50 BUS|
|||159.5||256.7||IL 33 north||Southern terminus of IL 33|
|||165.79||266.81||US 50 east||Indiana state line|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
Route map: Google
|U.S. Route 50|
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