US Bridges

County Rd. 25-A over Ir 75

Good

Miami County, Ohio · 1.78MI.N. of Jct. SR-571 · Structure no. 5501830

Built
1957
68 years old, rebuilt 1983
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
320 ft
4 main spans
Daily traffic
15,246
2015 count
Owner
State
State Highway Agency

About this bridge

County Rd. 25-A over Ir 75 is a steel continuous stringer/multi-beam or girder carrying County Rd. 25-A over Ir 75 in Miami County, Ohio. It was built in 1957 and reconstructed in 1983, so it is 68 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,246 vehicles a day, roughly 4% of them trucks, projected to reach 83,460 by 2035. The structure is 320 ft (97.5 m) long and 80 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCounty Rd. 25-A
CrossesIr 75
Location1.78MI.N. of Jct. SR-571
RouteCounty Highway 25
StateOhio
Coordinates39.98349, -84.20037
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.9 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length320 ft (97.5 m)
Longest span94 ft (28.7 m)
Deck width80 ft (24.4 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,246 (2015)
Projected traffic83,460 by 2035
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Rd. 25-A over Ir 75 built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1983.

What condition is County Rd. 25-A over Ir 75 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does County Rd. 25-A over Ir 75 carry?

About 15,246 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is County Rd. 25-A over Ir 75?

The structure is 320 ft (97.5 m) long with a longest span of 94 ft (28.7 m) and a deck 80 ft wide.

Who owns County Rd. 25-A over Ir 75?

It is owned by the State Highway Agency.