US Bridges

SR73 over Little Miami River

Fair

Warren County, Ohio · 0.3 MI E of JCT US42 · Structure no. 8302855

Built
1952
73 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
257 ft
4 main spans
Daily traffic
6,570
2015 count
Owner
State
State Highway Agency

About this bridge

SR73 over Little Miami River is a steel continuous stringer/multi-beam or girder carrying SR73 over Little Miami River in Warren County, Ohio. It was built in 1952, so it is 73 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 6,570 vehicles a day, roughly 11% of them trucks, projected to reach 9,119 by 2035. The structure is 257 ft (78.3 m) long and 34 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesSR73
CrossesLittle Miami River
Location0.3 MI E of JCT US42
RouteState Highway 73
CountyWarren County
StateOhio
Coordinates39.52526, -84.08808
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.9 US tons
Inventory rating32.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length257 ft (78.3 m)
Longest span70 ft (21.3 m)
Deck width34 ft (10.3 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,570 (2015)
Projected traffic9,119 by 2035
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR73 over Little Miami River built?

It was built in 1952, making it 73 years old in 2025.

What condition is SR73 over Little 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 July 2024.

How much traffic does SR73 over Little Miami River carry?

About 6,570 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is SR73 over Little Miami River?

The structure is 257 ft (78.3 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns SR73 over Little Miami River?

It is owned by the State Highway Agency.