| Route information | ||||
|---|---|---|---|---|
| Maintained byODOT | ||||
| Length | 33.99 mi[1][2] (54.70 km) | |||
| Existed | 1932[3][4]–present | |||
| Major junctions | ||||
| West end | ||||
| Major intersections | ||||
| East end | ||||
| Location | ||||
| Country | United States | |||
| State | Ohio | |||
| Counties | Portage,Trumbull | |||
| Highway system | ||||
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State Route 305 (SR 305) is a 33.99-mile (54.70 km) long east–weststate highway in the northeastern portion of theU.S. state ofOhio. The western terminus of SR 305 is at a signalized intersection with the duplex ofSR 82 andSR 700 in thevillage ofHiram. Its eastern terminus is at a five-way stop intersection on thePennsylvania state line nearly 1.75 miles (2.82 km) south ofOrangeville. Picking up where SR 305 leaves off heading southeast into Pennsylvania from this intersection isPA 718.

SR 305's path takes it through the northeastern quadrant ofPortage County and across the central part ofTrumbull County. There are no segments of SR 305 that are included as a part of theNational Highway System (NHS). The NHS is a network of highways identified as being most important for the economy, mobility and defense of the nation.[5]
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SR 305 was applied in 1932. The highway was originally a very short route that existed only along its present easternmost stretch between its junction withSR 7 and its connection with PA 718 at the Pennsylvania state line.[3][4] This remained the case until 1937, when SR 305 was extended west along previously un-numbered roads across Trumbull County and into northeastern Portage County to its current western terminus in Hiram.[6][7]
| County | Location | mi[1][2] | km | Destinations | Notes |
|---|---|---|---|---|---|
| Portage | Hiram | 0.00 | 0.00 | Western terminus of SR 305 | |
| Hiram–Nelson township line | 2.34 | 3.77 | |||
| Nelson Township | 5.67 | 9.12 | Southern terminus of SR 282 | ||
| Trumbull | Southington Township | 8.97 | 14.44 | ||
| 9.85 | 15.85 | ||||
| Champion Township | 16.09 | 25.89 | |||
| Bazetta Township | 22.18 | 35.70 | |||
| Cortland | 22.76 | 36.63 | |||
| Fowler Township | 24.16 | 38.88 | Interchange | ||
| 26.77 | 43.08 | ||||
| Hartford Township | 31.43 | 50.58 | |||
| 33.99 | 54.70 | Eastern terminus of SR 305 atPennsylvania state line | |||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||