US Bridges

SR 73 over Ir 71

Good

Clinton County, Ohio · Over Ir 71 · Structure no. 1402102

Built
1964
61 years old, rebuilt 2008
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
412 ft
4 main spans
Daily traffic
7,667
2015 count
Owner
State
State Highway Agency

About this bridge

SR 73 over Ir 71 is a steel continuous stringer/multi-beam or girder carrying SR 73 over Ir 71 in Clinton County, Ohio. It was built in 1964 and reconstructed in 2008, so it is 61 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 7,667 vehicles a day, roughly 9% of them trucks, projected to reach 10,642 by 2035. The structure is 412 ft (125.6 m) long and 36 ft wide.

CarriesSR 73
CrossesIr 71
LocationOver Ir 71
RouteState Highway 73
StateOhio
Coordinates39.48596, -83.9429
Functional classRural 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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating42.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length412 ft (125.6 m)
Longest span122 ft (37.2 m)
Deck width36 ft (11.1 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,667 (2015)
Projected traffic10,642 by 2035
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 SR 73 over Ir 71 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2008.

What condition is SR 73 over Ir 71 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 December 2024.

How much traffic does SR 73 over Ir 71 carry?

About 7,667 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is SR 73 over Ir 71?

The structure is 412 ft (125.6 m) long with a longest span of 122 ft (37.2 m) and a deck 36 ft wide.

Who owns SR 73 over Ir 71?

It is owned by the State Highway Agency.