Interstate 675 (Ohio)
| I-675 highlighted in red | ||||
| Route information | ||||
| Auxiliary route of I-75 | ||||
| Maintained by ODOT | ||||
| Length | 26.53 mi (42.70 km) | |||
| Existed | 1987–present | |||
| NHS | Entire route | |||
| Major junctions | ||||
| South end | I-75 near Miamisburg | |||
| US 35 in Beavercreek | ||||
| North end | I-70 / SR 4 / Clark CR 335 near Fairborn | |||
| Location | ||||
| Country | United States | |||
| State | Ohio | |||
| Counties | Montgomery, Greene, Clark | |||
| Highway system | ||||
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Interstate 675 (I-675) is an auxiliary Interstate Highway in the suburbs of Dayton in the US state of Ohio. I-675 serves as an eastern bypass of Dayton that is 26.53 miles (42.70 km) long. As originally proposed, the route was to reconnect with I-75 north of Dayton near Northridge rather than going east toward Springfield and I-70 (this was later rejected because part of the right-of-way would have gone through Wright-Patterson Air Force Base). Construction was completed in 1987, though some have lobbied to extend the highway west of Dayton.