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 | ![]() | |||
Major intersections | ||||
North end | ![]() | |||
Central segment | ||||
Length | 46.6 mi[2] (75.0 km) | |||
South end | ![]() | |||
North end | ![]() | |||
Northern segment | ||||
Length | 14.4 mi[3] (23.2 km) | |||
South end | ![]() ![]() ![]() | |||
Major intersections | ![]() | |||
North end | ![]() | |||
Location | ||||
Country | United States | |||
State | Indiana | |||
Counties | Perry, Crawford, Orange, Lawrence, Monroe, Hamilton, Madison, Grant, Allen | |||
Highway system | ||||
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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 has supplanted it as a through route, and State Road 37 now consists of three disconnected segments, with the segment through Indianapolis being replaced entirely by Interstate 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 of Interstate 69 and runs northeast to SR 9 in Marion. The other segment in northeastern Indiana runs from Interstate 469 near Fort Wayne to the Ohio state line.