Indiana State Road 37

State Road 37
SR 37 highlighted in red
Route information
Maintained by INDOT
Length	157 mi (253 km)
Existed	October 1, 1926[4]–present
Southern segment
Length	96 mi[1] (154 km)
South end	SR 66 in Tell City
Major intersections	I-64 in St. Croix
North end	I-69 near Bloomington
Central segment
Length	46.6 mi[2] (75.0 km)
South end	I-69 in Fishers
North end	SR 9 in Marion
Northern segment
Length	14.4 mi[3] (23.2 km)
South end	I-469 / US 24 / US 30 in Fort Wayne
Major intersections	SR 101 in Springfield Township
North end	SR 2 in Scipio Township
Location
Country	United States
State	Indiana
Counties	Perry, Crawford, Orange, Lawrence, Monroe, Hamilton, Madison, Grant, Allen
Highway system
Indiana State Highway System Interstate US State Scenic
← US 36 → SR 38

State Road 37 (SR 37) is a major route in the U.S. state of Indiana, running as a four-lane divided highway for a majority of its course in Southern and Central Indiana.

At one time, the route ran from the southwest corner of the state to the northeast corner. In the pre-Interstate Highway era, SR 37 was the most direct route between Fort Wayne and Indianapolis. Interstate 69 (I-69) has supplanted it as a through route, and SR 37 now consists of three disconnected segments, with the segment through Indianapolis being replaced entirely by I-69 in 2024. The longer segment starts at Tell City on the Ohio River and ends in Bloomington in south central Indiana. Another shorter segment resumes off I-69 and runs northeast to SR 9 in Marion. The other segment in northeastern Indiana runs from I-469 near Fort Wayne to the Ohio state line.