Interstate 675 Ohio

Routing

Connecting I-75 in Miami Township with I-70 in Mad River Township, Interstate 675 forms an eastern bypass of Dayton to the south and east, providing part of a regional route south to Cincinnati and east to Springfield. The freeway loop also travels through the cities of Centerville, Kettering, Beavercreek and Fairborn and serves Wright-Patterson Air Force Base.

History

The original proposed alignment for Interstate 675 called for it to loop back to I-75 in the vicinity of Northridge. It was later realigned to link with I-70 west of Springfield.

Interstate 675 was approved by AASHTO on June 23, 1969. The 26.53 mile long freeway was completed by 1989.

Southern Terminus - Interstate 75 - Miamisburg, Ohio
Perspective from Interstate 675 south
I-675 narrows from six to four lanes at the parclo interchange (Exit 2) with Ohio 725. The freeway converges with I-75 south of Dayton Mall in 1.5 miles. Photo taken by Steve Hanudel (08/20/05).
Three quarters of a mile out from the directional T interchange with Interstate 75. Photo taken by Chris and Amber Lokken (05/10/08).
The southbound mainline of Interstate 675 defaults onto Interstate 75 south through Miamisburg, Springboro and Franklin. Photo taken by Chris and Amber Lokken (05/10/08).
A pair of end shields stand at the northbound ramp for I-75 to West Carrollton, Moraine and Dayton. Photo taken by Steve Hanudel (08/20/05).
Perspective from Interstate 75 north
Interstate 75 straddles the Springboro city line ahead of Miamisburg and the split with I-675 at Exit 43. Photo taken by Chris and Amber Lokken (05/10/08).
Interstate 675 travels 17.2 miles north from I-75 to Ohio 844 (McClerron Memorial Skyway), a freeway spur north to Wright State University and Wright-Patterson Air Force Base. Photo taken by Chris and Amber Lokken (05/10/08).
Construction in 2009/10 added a diamond interchange with Austin Boulevard one mile south of the separation with Interstate 675. Photo taken by Chris and Amber Lokken (05/10/08).
A lane drop occurs at Exit 43 for Interstate 675 north to I-70 east for Columbus. Photo taken by Chris and Amber Lokken (05/10/08).
Interstate 675 branches northeast between Centerville and Kettering. I-75 continues north to Dayton and Toledo. Photo taken by Chris and Amber Lokken (05/10/08).
Northern Terminus - Interstate 70 and Ohio 4 / Spangler Road - Medway, Ohio
Perspective from Interstate 675 north
Exit 24 leaves Interstate 675 north for Ohio 444 to Holiday Valley and the village of Enon 1.25 miles south of I-70 & Ohio 4. Ohio 4 overlaps with I-70 for six miles between freeway spurs to Wright-Patterson AFB and Springfield. Photo taken by Chris and Amber Lokken (05/10/08).
The eastbound ramp for Interstate 70 and Ohio 4 to Springfield and Columbus departs beyond the Haddix Road overpass. Photo taken by Chris and Amber Lokken (05/10/08).
Interstate 675 concludes at a full cloverleaf interchange (Exits 26A/B) with I-70 and Ohio 4 southeast of Medway. Photo taken by Chris and Amber Lokken (05/10/08).
Interstate 70 travels 106 miles west to Indianapolis, Indiana by way of Vandalia, Richmond and Greenfield, Indiana. Spangler Road extends northwest as a local route into unincorporated Medway. Photo taken by Chris and Amber Lokken (05/10/08).
Perspective from Interstate 70 & Ohio 4 east
Ohio 4 combines with Interstate 70 east ahead of the cloverleaf interchange (Exit 44) with I-675 south and Spangler Road north. Photo taken by Steve Hanudel (08/20/05).
One mile ahead of Exit 44A for I-675 south to Wright Patterson Air Force Base, the city of Fairborn, and Wright State University. Photo taken by Chris and Amber Lokken (05/10/08).
Interstate 675 wraps around the east side of the Dayton area, leading to I-75 south toward Cincinnati from Miamisburg. Photo taken by Chris and Amber Lokken (05/10/08).
Exit 44A leaves I-70 & SR 4 east for Interstate 675 south. Exit 44B follows onto Spangler Road (Township Road 335) north to Medway. Photo taken by Chris and Amber Lokken (05/10/08).
Perspective from Interstate 675 south
Spangler Road crosses the Mad River and transitions into Interstate 675 south at the cloverleaf interchange (Exit 26) with I-70 & SR 4. Photo taken by Chris and Amber Lokken (05/10/08).
The succeeding ramp connects Spangler Road and the beginning of I-675 south with Interstate 70 and SR 4 east to Springfield and Columbus. Photo taken by Chris and Amber Lokken (05/10/08).

Page Updated February 12, 2019.