Indiana State Road 75

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State Road 75 marker

State Road 75
Route information
Maintained by INDOT
Length: 59.563 mi[1] (95.857 km)
Southern segment
Length: 36.896 mi[1] (59.378 km)
South end: US 40

US 136 in Jamestown

North end: SR 47 in Thorntown
Northern segment
Length: 22.667 mi[1] (36.479 km)
South end: US 421 / SR 38 / SR 39 near Frankfort

SR 26 near Sedalia

SR 18 in Flora
North end: SR 218 in Camden
Counties: Boone, Hendricks, Putnam, Carroll, Clinton
Highway system
I-74 I-80

State Road 75, the highest two-digit route in the U.S. state of Indiana consists of two discontinuous north–south segments.

Route description[edit]

Southern section[edit]

The southern section is about 37 miles (60 km) long. It begins at U.S. Route 40 at the Putnam-Hendricks county line and runs northward through the towns of Coatesville and North Salem in Hendricks County, and Jamestown and Advance in Boone County. There is a junction with U.S. Route 136 at Jamestown, and a junction with Interstate 74 just to the north. The northern terminus is at State Road 47 in the town of Thorntown.

State Road 75 (southern section)

Northern section[edit]

The northern section is 22.7 miles (36.5 km) long. It begins at U.S. Route 421 / State Road 38 / State Road 39 in Frankfort in Clinton County and runs northward, crossing State Road 26 east of Rossville, and passing through the town of Flora where it crosses State Road 18. The northern terminus is at State Road 218 in the town of Camden in Carroll County.

In August 2008, the Indiana Department of Transportation awarded Carroll County a grant of $1.2 million to be used to extend the road 3 miles (4.8 km) north, to connect with the planned relocation of State Road 25.[citation needed]

State Road 75 (northern section)


When the Owensboro Bridge between Owensboro, Kentucky and Rockport, Indiana opened in September 1940, its northern end connected to a new nine-mile (14 km) stretch of state highway through Spencer County that directed traffic to State Road 66. As the Kentucky highway which connected to the bridge was designated Kentucky State Route 75, Indiana gave its connector road the same number.

In 1954, U.S. Route 231 was extended through Kentucky and Indiana, and the southernmost stretch of 231 in Indiana was routed along State Road 75. The Indiana Department of Highways removed State Road 75 from U.S. 231 in Spencer County by the early 1980s, along with all of U.S. 231's other concurrent designations throughout the state (others included State Road 45 and State Road 43).

In October 2002, with the opening of the William H. Natcher Bridge and the relocation of U.S. 231, this segment of highway was again redesignated, this time as the southern leg of State Road 161.

Major intersections[edit]

County Location mi[1] km Destinations Notes
Putnam Jefferson Township 0.000 0.000 US 40 – Brazil, Indianapolis Southern terminus of SR 75
0.177 0.285 SR 240 – Greencastle
Hendricks Marion Township 9.478 15.253 US 36 – Rockville, Danville
North Salem 17.057 27.451 SR 236 – Danville
Jamestown 21.787 35.063 SR 234 west – Ladoga Western end of SR 234 concurrency
Boone 22.233 35.781 US 136 / SR 234 – Brownsburg, Crawfordsville Eastern end of SR 234 concurrency and terminus of SR 234
I-74 – Indianapolis, Danville Exit number 52 on I-74
Jefferson Township 31.365 50.477 SR 32 – Crawfordsville, Lebanon
Thorntown 36.896 59.378 SR 47 – Crawfordsville Northern terminus of the southern section of SR 75
Gap in route
Clinton Frankfort 36.897 59.380 US 421 / SR 38 / SR 39 – Delphi, Indianapolis Southern terminus of the northern section of SR 75
Owen Township 46.149 74.270 SR 26 – Lafayette, Kokomo
Carroll Flora 55.183 88.808 SR 18 – Delphi, Marion
Camden 59.563 95.857 SR 218 Northern terminus of SR 75
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b c d Indiana Department of Transportation (July 2016). Reference Post Book (PDF). Indianapolis: Indiana Department of Transportation. Retrieved February 3, 2017. 

External links[edit]