State Road 13 (SR 13) is a north–south state road in the US state of Indiana. The southern terminus is at an intersection with U.S. Highway 36 (US 36) and SR 67, in the town of Fortville, and its northern terminus is at the Michigan state line. At its northern end, signage for SR 13 ends at the interchange with the Indiana Toll Road; the highway continues unsigned for an additional running concurrently with US 131 to the state line. The state road runs through six counties in central and north-central Indiana mostly through rural farm fields and small towns. Dating back to the early days of the state road system, SR 13 was first signed in the eastern and northeastern part of the state. It was moved to its modern routing in 1931, running in two segments with the southern end in Indianapolis and the northern end at the Michigan state line. During the late 1930s, SR 13 was moved onto its modern routing in far southern Elkhart County. The southern end was moved from Indianapolis to Greenfield in the late 1930s or early 1940s. The north–south concurrency with US 33 was added in the early 1970s and the southern terminus was moved to Fortville in the mid-to-late 1970s. Route description SR 13 begins in Fortville at the corner of Broadway Street (US 36/SR 67) and Madison Street. The highway proceeds north on Madison Street, over CSX railroad track, before heading through the northern part of Fortville. Past Fortville the road enters Madison County and the landscape is mostly farms and fields. While in rural Madison County SR 13 has an interchange Interstate 69 (I-69) and an intersection with SR 38. The road enters Lapel and passes the Lapel Middle and Elementary Schools, before an intersection with the former northern end of SR 132. SR 13 turns towards the northwest at this intersection and passes through the center of Lapel. While in Lapel SR 13 has an at-grade crossing with a Central Indiana & Western Railroad track. Past Lapel SR 13 has an all-way stop at SR 32, before curving towards the west. Soon after the roadway becomes east–west until it curves again to become north–south. The highway passes over the White River, before merging north onto SR 37. SR 13 and SR 37 head north along the Madison-Hamilton county line, becoming the Madison-Tipton county line, before an intersection