U.S. Route 231 in Indiana

U.S. Route 231
U.S. Route 231
	US 231 highlighted in red
Route information
	Maintained by INDOT
Length	284.277 mi (457.499 km)
Existed	August 22, 1952–present
Major junctions
South end	US 231 at Kentucky state line
	I-64 in Dale; US 50 / US 150 in Loogootee; I-69 near Crane; I-70 near Cloverdale; US 40 near Putnamville; I-74 near Crawfordsville; US 52 in Lafayette; I-65 in Crown Point;
North end	US 41 in St. John
Location
Country	United States
State	Indiana
Counties	Spencer, Dubois, Martin, Daviess, Greene, Owen, Putnam, Montgomery, Tippecanoe, White, Jasper, Porter, Lake
Highway system
	United States Numbered Highway System; List; Special; Divided; Indiana State Highway System; Interstate; US; State; Scenic;

U.S. Route 231 (US 231) is the longest numbered highway in Indiana, covering over 284 miles (457 km). It is a main north–south highway in the western part of the state. The southern terminus of US 231 in Indiana is at the Kentucky state line and the northern terminus is at US 41 just south of St. John. The highway is a mixture of expressway and two-lane roadway. The expressway portions exist mainly in southern Indiana and around the Lafayette-West Lafayette area, with the rest mainly being two lanes.

^ Indiana Department of Transportation (July 2016). Reference Post Book (PDF). Indianapolis: Indiana Department of Transportation. Retrieved February 9, 2017.
^ Weingroff, Richard (April 7, 2011). "US 231 – Indiana to Florida: How a Highway Grew". Highway History. Federal Highway Administration. Retrieved May 15, 2012.

[indot-1] Indiana Department of Transportation (July 2016). Reference Post Book (PDF). Indianapolis: Indiana Department of Transportation. Retrieved February 9, 2017.

[US_231-2] Weingroff, Richard (April 7, 2011). "US 231 – Indiana to Florida: How a Highway Grew". Highway History. Federal Highway Administration. Retrieved May 15, 2012.

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