US Bridges

SR 73 over Great Miami River

Fair

Butler County, Ohio · Great Miami near Trenton · Structure no. 0901326

Built
1966
59 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
664 ft
8 main spans
Daily traffic
1,498
2015 count
Owner
State
State Highway Agency

About this bridge

SR 73 over Great Miami River is a steel continuous stringer/multi-beam or girder carrying SR 73 over Great Miami River in Butler County, Ohio. It was built in 1966, so it is 59 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,498 vehicles a day, roughly 11% of them trucks, projected to reach 2,079 by 2035. The structure is 664 ft (202.4 m) long and 66 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSR 73
CrossesGreat Miami River
LocationGreat Miami near Trenton
RouteState Highway 73
CountyButler County
StateOhio
Coordinates39.48154, -84.44307
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length664 ft (202.4 m)
Longest span84 ft (25.6 m)
Deck width66 ft (20.2 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,498 (2015)
Projected traffic2,079 by 2035
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$465,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 73 over Great Miami River built?

It was built in 1966, making it 59 years old in 2025.

What condition is SR 73 over Great Miami River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does SR 73 over Great Miami River carry?

About 1,498 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is SR 73 over Great Miami River?

The structure is 664 ft (202.4 m) long with a longest span of 84 ft (25.6 m) and a deck 66 ft wide.

Who owns SR 73 over Great Miami River?

It is owned by the State Highway Agency.