# Ohio State Route 104

State Route 104 (SR 104) is a north–south highway in Southern Ohio. Its southern terminus is at U.S. Route 23 (US 23) in Portsmouth, Ohio and its northern terminus is at US 33 in Columbus. The route passes through or close to the towns of Portsmouth, Waverly, Chillicothe, Grove City, and Columbus. From Waverly to Chillicothe, it overlaps US 23.
Though officially a north-south highway for its entire length, SR 104 formerly was signed east-west through Columbus.

## History

SR 104 is an original state highway with two parts: One from Portsmouth to Waverly, and one from Chillicothe to Columbus. The southern part of the route was decertified when U.S. Route 23 was certified in 1926. This southern route was replaced with the now defunct route number State Route 112. In 1951, the southern part of the route was recertified as State Route 104, connecting to the northern part of the route by overlapping U.S. Route 23. The route close to Portsmouth was concurrent with State Route 73.
In March 1951, the Ohio Department of Highways converted an 8+1⁄2-mile-long (13.7 km) section of SR 104 south of Columbus into a test strip for traffic signs. It was the first in a series of experiments sponsored by the United Nations in four states and five other countries to compare the effectiveness of national traffic sign standards from around the world. A series of 24 signs from six countries were placed along the road along with distance gauges for 30 test subjects. The department abandoned the experiment four days after it started, after the signs attracted unexpected controversy and curious onlookers who posed a hazard. The experiments eventually led to the Vienna Convention on Road Signs and Signals, which was adopted in many countries but not the United States.
Since 1968, SR 104's northern terminus has been extended twice – to U.S. Route 23 in 1968 and to U.S. Route 33 via freeway in 1989 – and its southern terminus has been extended twice into Portsmouth in 1972 and to U.S. Route 23 in 1974.
In 1998, a section of SR 104, concurrent with SR 73, in Scioto County had its grade raised out of the flood plain to prevent recurring flooding on the roadway in a $3.8 million project.
In 2010, a section of SR 104 north of Chillicothe to SR 207 in Ross County was widened into a four-lane highway. $6.5 million out of the $10.6 million cost to widen were from funds from the American Recovery and Reinvestment Act.

## Major junctions

| County | Location | mi | km | Exit | Destinations | Notes |
| Scioto | Portsmouth | 0.00 | 0.00 | | US 23 (Chillicothe Street / U.S. Grant Bridge) / SR 73 begins / 2nd Street | Southern end of US 23 southbound / SR 73 concurrencies / Southern end of SR 104 / Eastern end of SR 73 |
| Scioto | Portsmouth | 0.11 | 0.18 | | US 23 / Washington Street | Northern end of US 23 southbound concurrency |
| Scioto | Washington Township | 1.09– 1.82 | 1.75– 2.93 | | US 52 / US 23 Truck south / SR 852 – Cincinnati, Kentucky, Ironton | Interchange; northern terminus of SR 852; no access from SR 104 northbound to US 52 eastbound |
| Scioto | Washington Township | 2.35 | 3.78 | | SR 239 south to US 52 | Northern terminus of SR 239 |
| Scioto | Rush Township | 6.37 | 10.25 | | SR 73 west – Hillsboro | Northern end of SR 73 concurrency |
| Scioto | Morgan Township | 12.13 | 19.52 | | SR 348 | |
| Pike | Newton Township | 24.27 | 39.06 | | SR 32 / SR 124 (James A. Rhodes Appalachian Highway) | |
| Pike | Pee Pee Township | 28.34 | 45.61 | | SR 551 west | Eastern terminus of SR 551 |
| Pike | Pee Pee Township | 29.10 | 46.83 | | SR 552 west | Eastern terminus of SR 552 |
| Pike | Waverly | 30.36 | 48.86 | | US 23 south / SR 220 Truck south (Emmitt Avenue) – Portsmouth | Southern end of US 23 / SR 220 Truck concurrency |
| Pike | Waverly | 31.00 | 49.89 | | SR 220 (Market Street) / SR 335 begins / SR 220 Truck ends | Northern end of SR 220 Truck concurrency; southern end of SR 335 concurrency |
| Pike | Waverly | 31.35 | 50.45 | | SR 335 south (Clough Street) | Northern end of SR 335 concurrency |
| Ross | Franklin Township | 37.46 | 60.29 | | SR 372 east – Scioto Trail State Forest | Western terminus of SR 372 |
| Ross | Scioto Township | 43.23– 43.70 | 69.57– 70.33 | | US 23 north / US 23 Bus. begins / CR 205 (Three Locks Road) – Columbus | Interchange; northern end of US 23 concurrency; southern end of US 23 Bus. Concurrency |
| Ross | Chillicothe | 46.62 | 75.03 | | US 50 east (Eastern Avenue) / Eighth Street | Southern end of US 50 concurrency |
| Ross | Chillicothe | 47.14 | 75.86 | | US 23 Bus. north / SR 159 north (Bridge Street) / Main Street | Northern end of US 23 Bus. concurrency; southern terminus of SR 159 |
| Ross | Chillicothe | 47.56 | 76.54 | | SR 772 south (Paint Street) | Northern terminus of SR 772 |
| Ross | Chillicothe | 47.90 | 77.09 | | US 50 west (Western Avenue) / High Street / Carlisle Place – Hillsboro, Cincinnati | Northern end of US 50 concurrency |
| Ross | Scioto Township | 49.26– 49.43 | 79.28– 79.55 | | US 35 | Interchange, US 35 exit 110 |
| Ross | Union Township | 52.77 | 84.93 | | SR 207 south to US 23 | Southern end of SR 207 concurrency |
| Ross | Union Township | 53.29 | 85.76 | | SR 207 north | Northern end of SR 207 concurrency |
| Pickaway | Wayne Township | 66.85 | 107.58 | | US 22 – Circleville, Washington Court House | |
| Pickaway | Jackson Township | 68.23 | 109.81 | | SR 56 – Circleville, London | |
| Pickaway | Scioto Township | 76.20 | 122.63 | | SR 316 – Darbyville, South Bloomfield | |
| Pickaway | Scioto Township | 79.58 | 128.07 | | SR 762 – Commercial Point | |
| Franklin | Grove City–Jackson Township municipal line | 83.43 | 134.27 | | SR 665 – London, Groveport | |
| Franklin | Columbus | 89.93– 90.06 | 144.73– 144.94 | 89 | I-71 / Frank Road – Columbus, Cincinnati | Exit 104 (I-71) |
| Southern end of freeway |||||||
| Franklin | Columbus | 90.44– 90.65 | 145.55– 145.89 | 90 | Haul Road / Impound Lot Road | |
| Franklin | Columbus | 90.80– 91.14 | 146.13– 146.68 | 91 | US 23 (High Street) | |
| Franklin | Columbus | 91.57– 91.90 | 147.37– 147.90 | 92 | Groveport Road / Parsons Road | |
| Franklin | Columbus | 92.38– 92.79 | 148.67– 149.33 | 93 | Lockbourne Road | |
| Franklin | Columbus | 94.19– 94.43 | 151.58– 151.97 | 94 | Alum Creek Road / Performance Parkway / Refugee Road | |
| Northern end of freeway |||||||
| Franklin | Columbus | 94.98– 95.17 | 152.86– 153.16 | 95 A-B | US 33 to I-70 / Refugee Road – Lancaster | Northern end of SR 104 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access |||||||