Interstate 675 (Ohio)

Interstate 675 marker

Interstate 675

Map of Ohio with I-675 highlighted in red
Route information
Auxiliary route of I-75
Maintained by ODOT
Length: 26.53 mi[1] (42.70 km)
Existed: 1987 – present
Major junctions
South end: I-75 near Miamisburg
  US 35 in Beavercreek
North end: I-70 / SR 4 / Clark CR 335 near Fairborn
Highway system
SR 674SR 675
Double interchange on the southern half of Interstate 675

Interstate 675 (I-675) is an auxiliary interstate highway in the suburbs of Dayton in the U.S. state of Ohio. Interstate 675 serves as an eastern bypass of Dayton. I-675 measures 26.53 miles (42.70 km) in length. As originally proposed, the route was to reconnect with I-75 north of Dayton near Northridge rather than going east towards 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.

Route description

From the south, the highway begins at Interstate 75 in Miami Township, with four lanes. The highway opens to six lanes just after the interchange with State Route 725 in Washington Township. The next major junction is made with U.S. Route 35 in Beavercreek, which is a full-access interchange. The highway reduces to four lanes just after the interchange with North Fairfield Road. The highway interchanges with Interstate 70 near Fairborn, where it ends. The road continues as two lane Spangler Road, which leads to the unincorporated community of Medway.

Exit list

MontgomeryMiamisburg0.000.00 I-75 Cincinnati, ToledoSouthern terminus; Exit 43 on I-75
1.642.642 SR 725 Miamisburg, CentervilleModified split diamond interchange: northbound exit and southbound entrance at SR 725, additional loop ramp from eastbound SR 725 to northbound I-675; southbound exit and northbound entrance at Yankee Street, access via Yankee Street or Leona Lane (both two-way streets) to and from SR 725
Centerville4.346.984 SR 48 Kettering, CentervilleNorthbound, signed as exits 4A (south) and 4B (north); Northbound exit and southbound entrance at West Alexandersville-Bellbrook (Alex-Bell) Road, access to southbound and from northbound SR 48 via Alex-Bell; Partial cloverleaf interchange at SR 48, with loop ramp from northbound I-675 to northbound SR 48, and directional ramp from southbound SR 48 to southbound I-675
6.9611.207Wilmington Pike  Bellbrook
GreeneBeavercreek10.0616.1910Dorothy Lane / Indian Ripple Road  Kettering
12.8820.7313 US 35 Xenia, DaytonSigned as exits 13A (east) and 13B (west); southbound uses collector/distributor lane
15.1924.4515Wright-Patterson Air Force Base Area B / Colonel Glenn Highway
Fairborn15.9125.6016Grange Hall RoadSouthbound exit and northbound entrance
17.2327.7317 SR 844 north / North Fairfield Road – WPAFB Areas A & CSouthern terminus of SR 844; Complete access to North Fairfield Road, indirect access from southbound SR 844 to northbound I-675 and southbound I-675 to northbound SR 844 via North Fairfield Road and Colonel Glenn Highway
20.0732.3020Dayton–Yellow Springs Road
22.3836.0222 SR 235 Xenia, Fairborn
GreeneClark[2]Bath Township[3]Mad River Township[4]24.5039.4324 SR 444 Enon, Fairborn, WPAFB Areas A & C
ClarkMad River Township25.9141.7026 I-70 / SR 4 Springfield, Columbus, IndianapolisSigned as exits 26A (east) and 26B (west); I-70 exit 44
26.4342.53Spangler Road north  MedwayNorthern terminus; Continues north as Spangler Road
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. "Route Log and Finder List - Interstate System: Table 2". FHWA. Retrieved 2007-09-27.
  2. Ohio Department of Transportation (January 2008). "SR 444" (PDF). Technical Services Straight Line Diagrams of Greene County, Ohio. Retrieved March 7, 2013.
  3. Ohio Department of Transportation (July 27, 2012). "Greene County, Ohio" (PDF). Roadway Description Inventory Report - DESTAPE. Retrieved March 7, 2013.
  4. Ohio Department of Transportation (July 27, 2012). "Clark County, Ohio" (PDF). Roadway Description Inventory Report - DESTAPE. Retrieved March 7, 2013.

Route map: Bing / Google

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