Interstate 675 (I-675) is an

auxiliary Interstate Highway Auxiliary Interstate Highways (also called three-digit Interstate Highways) are a subset of highways within the United States' Interstate Highway System. The 323 auxiliary routes generally fall into three types: spur routes, which connect to or i ...

in the suburbs of

Dayton Dayton () is a city in Montgomery County, Ohio, United States, and its county seat. It is the List of cities in Ohio, sixth-most populous city in Ohio, with a population of 137,644 at the 2020 United States census, 2020 census. The Dayton metro ...

in the US state of Ohio. I-675 serves as an eastern bypass of Dayton that is long. As originally proposed, the route was to reconnect with

I-75 Interstate 75 (I-75) is a major north–south Interstate Highway System, Interstate Highway in the Great Lakes region, Great Lakes and Southeastern United States, Southeastern regions of the United States. As with most Interstates that end ...

north of Dayton near Northridge rather than going east toward Springfield and

I-70 Interstate 70 (I-70) is a major east–west Interstate Highway in the United States that runs from I-15 near Cove Fort, Utah, to I-695 and Maryland Route 570 (MD 570) in Woodlawn, just outside Baltimore, Maryland. I-70 appr ...

(this was later rejected because part of the right-of-way would have gone through

Wright-Patterson Air Force Base Wright-Patterson Air Force Base (WPAFB) is a United States Air Force base and census-designated place just east of Dayton, Ohio, in Greene County, Ohio, Greene and Montgomery County, Ohio, Montgomery counties. It includes both Wright and Patte ...

). 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 a

semi-directional T interchange In the field of road transport, an interchange (American English) or a grade-separated junction (British English) is a road junction that uses grade separations to allow for the movement of traffic between two or more roadways or highways, using ...

with

in Miami Township, with four lanes. Next, there is a modified split diamond interchange with State Route 725 (SR 725) in Washington Township; ramps to and from the south connect to SR 725, with an additional directional loop ramp from eastbound SR 725 to northbound I-675; ramps to and from the north connect to Yankee Street. Rather than employing a pair of one-way

frontage road A frontage road (also known as an access road, outer road, service road, feeder road, or parallel road) is a local road running parallel to a higher-speed, limited-access road. Where parallel high-speed roads are provided as part of a maj ...

s typical for this type of interchange, access between SR 725 and Yankee Street is made via Leona Lane or via Yankee Street itself (both two-way streets). After this interchange, the highway opens to six lanes. The next junction is with SR 48 on the border of unincorporated Washington Township and the city of Centerville. First, there is a half-diamond interchange at West Alexandersville–Bellbrook (Alex–Bell) Road, providing a northbound exit and a southbound entrance. Next, there is a four-ramp

partial cloverleaf interchange A partial cloverleaf interchange or parclo is a modification of a cloverleaf interchange. The design has been well received, and has since become one of the most popular freeway-to-arterial interchange designs in North America. It has also bee ...

with SR 48. The loop ramp from northbound I-675 to SR 48 is directional northbound, and there is a directional ramp from southbound SR 48 to southbound I-675; thus, the movements from northbound I-675 to southbound SR 48, and from northbound SR 48 to southbound I-675, are made via Alex–Bell Road. The next major junction is with US Route 35 (US 35) in Beavercreek, which is a full-access combination interchange; southbound traffic at this interchange uses collector–distributor lanes. The junction with North Fairfield Road and SR 844 provides access to Wright-Patterson Air Force Base Area A,

Wright State University Wright State University is a public research university in Fairborn, Ohio, United States. Originally opened in 1964 as a branch campus of Miami University and Ohio State University, it became an independent institution in 1967 and was named in ...

, and the Nutter Center. The configuration is a hybrid

diamond interchange A diamond interchange is a common type of road junction, used where a controlled-access highway crosses a minor road. Design The freeway itself is grade separation, grade-separated from the minor road, one crossing the other over a bridge. ...

, with complete access provided to North Fairfield Road. There is partial direct access provided to SR 844: the exit ramp from northbound I-675 splits, with the right branch meeting North Fairfield Road, while the left branch becomes northbound SR 844 and flies under both I-675 and North Fairfield Road; the entrance ramp from North Fairfield Road to southbound I-675 is offset from its expected position in a diamond interchange, allowing southbound SR 844 to fly under North Fairfield Road and to merge on the entrance ramp's left. Access from southbound I-675 to northbound SR 844, and from southbound SR 844 to northbound I-675, is made indirectly, via North Fairfield Road and Colonel Glenn Highway. The Interstate reduces to four lanes just after this interchange. The highway has a

cloverleaf interchange A cloverleaf interchange is a two-level interchange (road), interchange in which all turns are handled by slip roads. To go left (in right-hand traffic; reverse directions in left-driving regions), vehicles first continue as one road passe ...

with

near

Fairborn Fairborn is a city in Greene County, Ohio, United States. The population was 34,620 at the 2020 census. It is a suburb of Dayton, Ohio, Dayton and part of the Dayton metropolitan area. The city is home to Wright State University, which serves nea ...

, where it ends. The road continues as two-lane Spangler Road, which leads to the

unincorporated community An unincorporated area is a parcel of land that is not governed by a local general-purpose municipal corporation. (At p. 178.) They may be governed or serviced by an encompassing unit (such as a county) or another branch of the state (such as th ...

Medway Medway is a Unitary authorities of England, unitary authority area with Borough status in the United Kingdom, borough status in the ceremonial county of Kent in South East England. It was formed in 1998 by merging the boroughs of City of Roche ...

History

By 1985, the road had been completed to the interchange with SR 844.

Exit list

References

External links

Kurumi - I-675 Ohio
{{3di, 75 75-6 Ohio 75-6 6 Ohio Transportation in Montgomery County, Ohio Transportation in Greene County, Ohio Transportation in Clark County, Ohio 1987 establishments in Ohio