# Ohio State Route 15

State Route 15 (SR 15) is a north–south and east–west route in northwestern Ohio. Its southern (eastern) terminus is at its interchange with U.S. Route 23/State Route 103 (US 23/SR 103) near Carey, and its northern (western) terminus is at the Michigan state line north of Pioneer, where the route continues in Michigan as M-99. The route is signed east–west from Carey to Bryan, and it is signed north–south from there to the Michigan state line.
SR 15 is an expressway for its southernmost 19 miles (31 km): two miles (3.2 km) where it runs concurrently with Interstate 75 (I-75), three miles (4.8 km) where it runs concurrently with US 68, and the final 14 miles (23 km) as a stand-alone limited-access road until its junction with US 23. The final 17 miles (27 km) are part of a heavily traveled corridor providing the most direct route between Detroit, Toledo, Findlay, Marion and Columbus.

## History

SR 15 was certified in 1923, along the current US 322, which replaced it in 1926.
In 1926 the designation was reapplied to a route from Carey to the Indiana state line. In 1929 it was rerouted to Bryan, replacing parts of SR 9. It replaced the rest of SR 9 in 1931, rerouted along its current route to the Michigan state line.
In 1966, SR 15 was rerouted on an expressway from I-75 in Findlay to US 23 in Carey, its new southern (eastern) terminus. The highway runs a few miles south of its previous routing, which was recertified as SR 568 the same year.

## Major intersections

| County | Location | mi | km | Exit | Destinations | Notes |
| Wyandot | Carey | 0.000– 0.477 | 0.000– 0.768 | — | US 23 / SR 103 – Columbus, Toledo | Interchange; eastern terminus of SR 15 |
| Hancock | Vanlue | 4.558– 5.246 | 7.335– 8.443 | — | SR 330 north – Vanlue | Interchange; southern terminus of SR 330 |
| Hancock | Marion Township | 9.696– 10.420 | 15.604– 16.769 | — | SR 37 – Delaware, Findlay | Interchange |
| Hancock | Findlay | 13.695– 14.325 | 22.040– 23.054 | — | US 68 south – Kenton | Eastern end of US 68 concurrency; interchange |
| Hancock | Findlay | 16.628– 16.773 | 26.760– 26.994 | — | Lima Avenue – Findlay | RIRO interchange |
| Hancock | Findlay | 16.842– 17.364 | 27.105– 27.945 | 156 | I-75 south / US 68 – Cincinnati, Lima | Southern end of I-75 concurrency; northern terminus of US 68 |
| Hancock | Findlay | 17.834– 18.428 | 28.701– 29.657 | 157 | SR 12 – Columbus Grove, Findlay | |
| Hancock | Findlay | 19.578– 19.862 | 31.508– 31.965 | 159 | I-75 north / US 224 east (West Trenton Avenue) – Toledo, Findlay, Tiffin | Northern end of I-75 concurrency; eastern end of US 224 concurrency |
| Hancock | Blanchard Township | 24.351 | 39.189 | | SR 186 north – McComb | Southern terminus of SR 186 |
| Hancock | Blanchard Township | 26.364 | 42.429 | | SR 235 – Ada, McComb | |
| Putnam | Ottawa | 40.645 | 65.412 | | US 224 west (West Main Street) / SR 65 south (South Elm Street) / SR 109 begins – Van Wert, Lima | Western end of US 224 concurrency; southern end of SR 65 concurrency; southern terminus of SR 109 |
| Putnam | Ottawa | 41.120 | 66.176 | | SR 65 north / SR 109 north (North Perry Street) / North Taft Avenue | Northern end of SR 65/SR 109 concurrency |
| Putnam | Greensburg Township | 46.397 | 74.669 | | SR 108 north / Road 14 – Napoleon | Southern terminus of SR 108 |
| Putnam | Palmer Township | 50.531 | 81.322 | | SR 115 south – Kalida | Northern terminus of SR 115 |
| Putnam | Palmer Township | 51.094 | 82.228 | | SR 613 – Continental, Leipsic | |
| Putnam | Monroe Township | 55.551 | 89.401 | | SR 634 south – Continental | Northern terminus of SR 634 |
| Defiance | Defiance | 67.641 | 108.858 | | SR 18 east (East 2nd Street) | Eastern end of SR 18 concurrency |
| Defiance | Defiance | 68.128 | 109.641 | | SR 66 south (Jefferson Avenue) – Delphos | Southern end of SR 66 concurrency |
| Defiance | Defiance | 68.270 | 109.870 | | SR 111 south (Clinton Street) / West 2nd Street | Northern terminus of SR 111 |
| Defiance | Defiance | 68.907 | 110.895 | | SR 66 north (North Clinton Street) / East Sessions Avenue | Northern end of SR 66 concurrency |
| Defiance | Defiance | 69.838– 69.948 | 112.393– 112.570 | | US 24 – Toledo, Fort Wayne | Exit 25 (US 24) |
| Defiance | Defiance | 71.186 | 114.563 | | SR 18 west – Hicksville | Northern end of SR 18 concurrency |
| Defiance | Ney | 79.837 | 128.485 | | SR 249 west | Eastern terminus of SR 249 |
| Williams | Pulaski Township | 83.348 | 134.136 | | US 127 south – Sherwood | Southern end of US 127 concurrency; location of north–south/east–west direction change |
| Williams | Pulaski Township | 84.244 | 135.578 | | US 6 / SR 2 west – Edgerton, Napoleon | Southern end of SR 2 concurrency |
| Williams | Bryan | 86.514 | 139.231 | | SR 2 east / SR 34 (High Street) | Northern end of SR 2 concurrency |
| Williams | Bryan | 87.288 | 140.476 | | US 127 north / CR E (Brunicardi Way) – West Unity | Northern end of US 127 concurrency |
| Williams | Jefferson Township | 94.303 | 151.766 | | US 20A east / SR 107 west – West Unity, Montpelier | Southern end of US 20A concurrency; eastern terminus of SR 107 |
| Williams | Holiday City | 95.912– 96.202 | 154.355– 154.822 | | I-80 / I-90 / Ohio Turnpike – South Bend, Toledo | Exit 13 on Ohio Turnpike |
| Williams | Madison Township | 97.970 | 157.667 | | US 20A east / CR O – Angola, IN | Northern end of US 20A concurrency |
| Williams | Pioneer | 99.773 | 160.569 | | US 20 – Fayette, Angola, IN | |
| Williams | Madison Township | 102.312 | 164.655 | | M-99 north – Hillsdale | Michigan state line |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Tolled |||||||