Routes were commissioned in 1917 and decommissioned in 1926, unless otherwise noted

Route Number Name Western/Southern terminus Eastern/Northern terminus Today's Route(s) Miles Notes
SR 1 *Pigeon Roost Route
*Unknown
*Wabash Way
*Michigan Road
Kentucky State Line-New Albany Michigan State Line-North of South Bend State Road 311 and U.S. Route 31 Passing though downtown Indianapolis and South Bend
SR 2 Illinois State Line-Dyer Ohio State Line east of Fort Wayne U.S. Route 30, State Road 2, and U.S. Route 33 From 1917-1920; via LaPorte, South Bend, Elkart, and Goshen
SR 2 Illinois State Line-Dyer Ohio State Line east of Fort Wayne US 30 From 1920-1926; Via Plymouth, Warsaw, Columbia City
SR 3 National Old Trails Road Illinois State Line-West Terre Haute Ohio State Line-Richmond U.S. Route 40 Passing Though downtown Indianapolis
SR 4 Evansville Ohio State Line-Lawrenceburg Unknown west of Seymour; east of Seymounr U.S. Route 50 From 1917-1920; via Jasper, French Lick, and Seymour
SR 4 Shoals Ohio State Line-Lawrenceburg US 50 From 1920-1926
SR 4 Sullivan Bloomfield State Road 54 From 1917-1926
SR 5 Illinois State Line-Vincennes Mitchell U.S. Route 150, US 50, and State Road 60 From 1917-1920
SR 5 Illinois State Line-Vincennes Kentucky State Line-New Albany US 150 From 1920-1926
SR 6 Michigan Road Boswell Kentucky State Line-Madison U.S. Route 52 and State Road 352 west of Indianapolis; U.S. Route 421 east of Indianapolis
SR 7 Illinois State Line-west of Kentland Fort Wayne U.S. Route 24 Went downtown Logansport, Peru, Wabash, Huntington, and Fort Wayne
SR 8 Remington Gary U.S. Route 231, SR 2, State Road 55, and State Road 53
SR 9 Rockville

Linton
north of Marshall

Brazil
not number

State Road 59
Went though Marshall
SR 10 Dixie Bee Line Kentucky State Line-Evansville Illinois State Line-Hammond U.S. Route 41, State Road 352, US 52, back to US 41, SR 2, US 231, SR 55, and back to US 41
SR 11 Ben Hur Trail Greenfield Michigan State Line-north of Howe State Road 9 Paasing though downtown Pendleton, Anderson, Marion, and Huntington
SR 12 Not named Vincennes Indianapolis State Road 67 Went into downtown Indianapolis
SR 13 Lewisville Michigan State Line-near Fremount State Road 3, State Road 18, State Road 1, and U.S. Route 27 Passing though downtown Fort Wayne; US 27 north of Fort Wayne
SR 14 Not named Tell City St. Croix State Road 37
SR 15 Liberty Way Indianapolis Michigan City US 421, State Road 29, and U.S. Route 35
SR 16 Mt Vernon Kentucky State Line-New Albany State Road 62
SR 17 Toledo Chicago Pike Ligonier Ohio State Line-east of Butler U.S. Route 6 may have been around before 1917
SR 18 Rockport North of Jasper US 231 Passing though downtown Dale; Went as far north as the current northern intersection of US 231/State Road 56
SR 19 West of Tipton Alexandria State Road 19
SR 20 Unknown Mt. Vermom Owensville State Road 69, State Road 68, and State Road 65
SR 21 Liberty Fort Wayne US 27
SR 22 Sulphur Indianapolis SR 37
SR 23 East of Pennville North of Pennville SR 1 and State Road 26 13 miles (21 km) Example
SR 24 Palmyra East of Medora State Road 135 Was SR 35, untill the decommissioned of SR 35
SR 25 Toledo Angola Goshen Trial Michigan City Ohio State Line-east of Angola U.S. Route 20 Went dowmtowm South Bend and Elkhart
SR 26 Bloomington Madison State Road 46 and State Road 7 SR 46 west of Columbus and SR 7 east of Columbus
SR 27 Hoosier Dixie Marion Goshen State Road 15
SR 28 Winslow East of Switz City Sttae Road 57 52.9 miles (85.1 km) [1]
SR 29 Lafayette South of Kokomo State Road 26 39.3 miles (63.2 km) [2]
SR 30 Linton Bloomfield State Road 54 12.4 miles (20.0 km) [3]
SR 31 Pikes Peak Ocean to Ocean Highway Montezuma Indianapolis U.S. Route 36 65.9 miles (106.1 km) [4] Followed Washington Street to downtown Indianapolis
SR 32 Not named Bloomington Lafayette US 231 Example
SR 33 Illinois State Line-east of Dabville, IL Ohio State Line-Union City US 136 and State Road 32 Folloed State Road 34, until SR 34 was decommissioned, in favor of US 136
SR 34 Brookville Dublin SR 1 32 miles (51 km)
SR 35 Kokomo West of Montpelier US 35, State Road 9, and [[Indiana State Road 18|State Road 18 Went downtown Marion
SR 36 Tip Top Trail Greenburg Dunrieth SR 3 32 miles (51 km)
SR 37 Indianapolis Pendleton US 36 27 miles (43 km)
SR 38 Jeffersonville Sellersburg US 31 7 miles (11 km) Frist was US 31E, until US 31E became US 31
SR 39 Indianapolis Ohio State Line US 52 87 miles (140 km)
SR 40 Princeton

Scottsburg
West Baden Springs

Aurora
SR 64 and SR 56

SR 56
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  1. ^ "overview map of Old SR 28 from Winslow to Switz City" (Map). Google Maps. Retrieved 2011-1-4. {{cite map}}: Check date values in: |accessdate= (help)
  2. ^ "overview map of Old SR 29 from Lafayette to Kokomo" (Map). Google Maps. Retrieved 2011-1-4. {{cite map}}: Check date values in: |accessdate= (help)
  3. ^ "overview map of Old SR 30 from Linton to Bloomfield" (Map). Google Maps. Retrieved 2011-1-4. {{cite map}}: Check date values in: |accessdate= (help)
  4. ^ "overview map of Old SR 31 from Montezuma to Indianapolis" (Map). Google Maps. Retrieved 2011-1-4. {{cite map}}: Check date values in: |accessdate= (help)