# Ohio State Route 29

State Route 29 (SR 29) is an east–west state highway in the west-central portion of the U.S. state of Ohio. Its western terminus is at the Indiana state line near Celina, where State Road 67 continues west. It continues east to St. Marys where it junctions with U.S. Route 33. In that town, it also crosses State Route 66, State Route 116, and State Route 703, which was its former alignment before a divided highway was built. After turning south it crosses State Route 219 in New Knoxville and then has an interchange with Interstate 75, continuing into Sidney where it meets State Route 47. Still going southeast, it briefly joins State Route 235 before turning east and then south again to enter Urbana. Here the route joins U.S. Route 36, and the concurrency intersects with U.S. Route 68 and State Route 54. From there, State Route 29 leaves U.S. Route 36 and continues to Mutual, intersecting with State Route 161, and State Route 56 shortly after; later, in Mechanicsburg, the route intersects with State Route 4. The route then intersects with State Route 38, U.S. Route 42, and Interstate 70 before reaching its eastern terminus at U.S. Route 40 on the western edge of West Jefferson.

## History

The original route was established in 1924. Originally routed along the current alignments of State Route 571 from the Indiana state line in Union City to 1-mile (1.6 km) east of Greenville, U.S. Route 36 from 1-mile (1.6 km) east of Greenville to Urbana, and its current alignment from Urbana to 2 miles (3.2 km) west of West Jefferson.
The route was truncated in 1932 at Urbana; alignment from Union City to Greenville designated as State Route 71; Greenville to Urbana designated as U.S. Route 36.
The route was extended in 1939 to the Indiana state line along the former State Route 54 alignment (which was State Route 32 before 1938).
In 1973, divided highway alignment was constructed from Celina to State Route 364 and freeway alignment constructed from State Route 364 to U.S. Route 33; former alignment designated State Route 703.

## Major junctions

| County | Location | mi | km | Destinations | Notes |
| Mercer | Washington Township | 0.00 | 0.00 | SR 67 south / State Line Road – Bryant | Indiana state line |
| Mercer | Washington Township | 0.96 | 1.54 | SR 49 – Willshire, Fort Recovery | |
| Mercer | Jefferson Township | 8.17 | 13.15 | SR 118 north / CR 81 (Burkettsville St. Henry Road) – Rockford | Western end of SR 118 concurrency |
| Mercer | Jefferson Township | 9.17 | 14.76 | SR 118 south / T-91 – Coldwater | Eastern end of SR 118 concurrency |
| Mercer | Celina | 12.21 | 19.65 | US 127 south / SR 703 east (Main Street) / Logan Street | Western end of US 127 / SR 703 concurrencies |
| Mercer | Celina | 12.44 | 20.02 | US 127 north / SR 197 east (Main Street) / Market Street | Eastern end of US 127 concurrency; western terminus of SR 197 |
| Mercer | Celina | 13.46 | 21.66 | SR 703 east (East Market Street) / Grand Lake Road – Wright State University Lake Campus | Eastern end of SR 703 concurrency |
| Auglaize | Noble Township | 19.22– 19.55 | 30.93– 31.46 | SR 364 south / CR 15 (Koenig Road) | Interchange; northern terminus of SR 364 |
| Auglaize | Noble Township | 20.54– 21.11 | 33.06– 33.97 | US 33 – Columbus, Fort Wayne, Ind. | Interchange |
| Auglaize | St. Marys | 22.17 | 35.68 | SR 116 north (Defiance Road) / Dieker Place | Western end of SR 116 concurrency |
| Auglaize | St. Marys | 22.67 | 36.48 | SR 66 south (Main Street) / SR 116 ends (Spring Street) / SR 703 west | Eastern end of SR 116 concurrency; western end of SR 66 concurrency; eastern terminus of SR 703 |
| Auglaize | St. Marys | 23.03 | 37.06 | SR 66 north (Spruce Street) | Eastern end of SR 66 concurrency |
| Auglaize | New Knoxville | 28.77 | 46.30 | SR 219 (Spring Street) | |
| Shelby | Van Buren Township | 32.73 | 52.67 | SR 274 west / Schmitmeyer Baker Road – New Bremen | Western end of SR 274 concurrency |
| Shelby | Van Buren Township | 33.58 | 54.04 | SR 274 east – Kettlersville | Eastern end of SR 274 concurrency |
| Shelby | Van Buren Township | 37.40 | 60.19 | SR 119 – Anna, Minster | |
| Shelby | Franklin Township | 41.70 | 67.11 | SR 705 west / CR 15 (Sharp Road) – Fort Loramie, Osgood | Eastern terminus of SR 705 |
| Shelby | Clinton Township | 44.36– 44.52 | 71.39– 71.65 | I-75 – Dayton, Toledo | Exit 93 (I-75) |
| Shelby | Sidney | 46.66 | 75.09 | SR 47 (North Street) | Western end of SR 47 westbound concurrency |
| Shelby | Sidney | 46.83 | 75.37 | SR 47 west (Court Street) / Ohio Avenue | Eastern end of SR 47 westbound concurrency; western end of SR 47 eastbound concurrency |
| Shelby | Sidney | 46.91 | 75.49 | SR 47 east (Main Avenue) | Eastern end of SR 47 eastbound concurrency |
| Shelby | Perry Township | 49.74 | 80.05 | SR 706 east | Western terminus of SR 706 |
| Shelby | Green Township | 53.41 | 85.96 | SR 589 south | Northern terminus of SR 589 |
| Champaign | Adams Township | 58.34 | 93.89 | SR 235 south | Western end of SR 235 concurrency |
| Champaign | Adams Township | 58.66 | 94.40 | SR 235 north | Eastern end of SR 235 concurrency |
| Champaign | Adams Township | 60.69 | 97.67 | SR 245 east / CR 31 (Ford Road) – Springhills | Western terminus of SR 245 |
| Champaign | Concord Township | 66.06 | 106.31 | SR 560 south | Northern terminus of SR 560 |
| Champaign | Salem Township | 71.74 | 115.45 | SR 296 east | Western terminus of SR 296 |
| Champaign | Urbana | 75.21 | 121.04 | US 36 west (Miami Street) | Western end of US 36 concurrency |
| Champaign | Urbana | 75.88 | 122.12 | US 68 (Main Street) | Traffic circle |
| Champaign | Urbana | 76.68 | 123.40 | SR 54 south (Jefferson Avenue) | Northern terminus of SR 54 |
| Champaign | Urbana | 77.05 | 124.00 | US 36 east | Eastern end of US 36 concurrency |
| Champaign | Mutual | 82.44 | 132.67 | SR 161 east | Western terminus of SR 161 |
| Champaign | Union Township | 83.13 | 133.78 | SR 56 east – London | Western terminus of SR 56 |
| Champaign | Mechanicsburg | 86.60 | 139.37 | SR 559 north (High Street) | Western end of SR 559 concurrency |
| Champaign | Mechanicsburg | 86.87 | 139.80 | SR 4 (Sandusky Street) / SR 559 ends | Eastern end of SR 559 concurrency |
| Champaign | Goshen Township | 88.35 | 142.19 | SR 187 south | Northern terminus of SR 187 |
| Madison | Monroe–Deer Creek township line | 59.91 | 96.42 | SR 38 – Marysville, London | |
| Madison | Jefferson Township | 99.52 | 160.16 | US 42 – Plain City, London | |
| Madison | Jefferson Township | 100.46– 100.73 | 161.67– 162.11 | I-70 – Springfield, Columbus | Exit 80 (I-70); westbound I-70 ramps intersect SR 29 at roundabout |
| Madison | West Jefferson | 102.94 | 165.67 | US 40 (National Pike) | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus ||||||