Indiana State Road 109

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State Road 109 marker

State Road 109
Route information
Maintained by INDOT
Length: 31.83 mi[1] (51.23 km)
Southern segment
Length: 20.15 mi[1] (32.43 km)
South end: US 40 in Knightstown


US 36
North end: I-69 / SR 9 / SR 67 in Anderson
Northern segment
Length: 11.68 mi[1] (18.80 km)
South end: US 30 in Columbia City
North end: US 33 near Wolf Lake
Highway system
  • Indiana State Roads
SR 106 SR 110

State Road 109 is a state highway in the U.S. State of Indiana.

Route description[edit]

Southern section[edit]

The southern terminus is at U.S. Route 40 in Knightstown in Henry County. The highway runs north for about a mile, then heads northwest and intersects Interstate 70 (exit 115) before passing through Wilkinson in Hancock County. In Warrington it heads north into Madison County and crosses U.S. Route 36. The northern terminus is at the intersection of State Road 9 with Interstate 69 (exit 26) in Anderson. It covers a distance of 20.15 miles (32.43 km).

Northern section[edit]

The southern terminus is at U.S. Route 30 on the north edge of Columbia City in Whitley County. The highway runs north through the town of Big Lake and ends at U.S. Route 33 in the town of Wolf Lake in Noble County. It covers a distance of 11.68 miles (18.80 km).

A point of interest along the northern section of State Road 109 includes the Merry Lea environmental learning center just south of Wolf Lake.

An unusual method of road construction has been employed in the northern section of SR-109, located about 2 miles (3.2 km) south of US-33. A small segment of the road was built atop large styrofoam blocks to help prevent the road bed from sinking into the peat-based soil structure common to the area. Evidently, this has increased the buoyancy of the road, with the average density of the combination of styrofoam blocks, concrete, gravel and asphalt being equal to or slightly less than the surrounding soil. To date the road segment remains in excellent condition after no less than five years of service.

Major intersections[edit]

County Location Mile[1] km Destinations Notes
Henry Knightstown 0.00 0.00 US 40 – Greenfield, Richmond Southern terminus of SR 109
Wayne Township 3.58 5.76 I-70 – Indianapolis, Dayton Exit number 115 on I-70
Hancock Brown Township 9.37 15.08 SR 234 – Indianapolis, New Castle
Madison Adams Township 15.00 24.14 SR 38 – Pendleton, New Castle
16.58 26.68 US 36 – Pendleton, greenville
Anderson 20.15 32.43 I-69 / SR 9 / SR 67 – Indianapolis, Fort Wayne Northern terminus of the southern section of SR 109
Gap in route
Whitley Columbia City 20.15 32.43 US 30 – Warsaw, Fort Wayne Southern terminus of the northern section of SR 109
Noble Wolf Lake 31.83 51.23 US 33 – Goshen, Elkhart, Fort Wayne Northern terminus of SR 109
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b c d "INDOT Roadway Referencing System" (PDF). 

External links[edit]

Route map: Google / Bing