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.



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Mileage
State Ohio
Mileage 26.53
Cities Centerville, Kettering, Beavercreek, Dayton, Fairborn
Junctions I-75, I-70
Source: December 31, 2017 Interstate Route Log and Finders List
I-675 Ohio Annual Average Daily Traffic
Location AADT Composite
I-75 to Exit 2 65,617
Exits 2 to 4A 79,361
Exits 4A to 4B 69,029
Exits 4B to 7 76,276
Exits 7 to 10 84,481
Exits 10 to 13 87,701
Exits 13 to 15 82,939
Exits 15 to 16 66,575
Exits 16 to 17 72,312
Exits 17 to 20 54,571
Exits 20 to 22 48,262
Exits 22 to 24 47,037
Exits 24 to 26 46,445
Source: 2017/18 AADT - ODOT Transportation Data Management System