US Bridges

Oregonia Road over Flat Fork

Fair

Warren County, Ohio · 0.5 MI E of CR 268 · Structure no. 8330107

Built
1973
52 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
83 ft
2 main spans
Daily traffic
841
2015 count
Owner
County
County Highway Agency

About this bridge

Oregonia Road over Flat Fork is a prestressed concrete box beam or girders - multiple carrying Oregonia Road over Flat Fork in Warren County, Ohio. It was built in 1973, so it is 52 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 841 vehicles a day, roughly 7% of them trucks, projected to reach 1,167 by 2035. The structure is 83 ft (25.3 m) long and 24 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesOregonia Road
CrossesFlat Fork
Location0.5 MI E of CR 268
RouteCounty Highway C0012
CountyWarren County
StateOhio
Coordinates39.47396, -84.04603
Functional classRural Minor Collector

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 protection7 GoodSome minor problems.
Last inspectionOctober 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 alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating39.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length83 ft (25.3 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic841 (2015)
Projected traffic1,167 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Oregonia Road over Flat Fork built?

It was built in 1973, making it 52 years old in 2025.

What condition is Oregonia Road over Flat Fork 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 October 2024.

How much traffic does Oregonia Road over Flat Fork carry?

About 841 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Oregonia Road over Flat Fork?

The structure is 83 ft (25.3 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Oregonia Road over Flat Fork?

It is owned by the County Highway Agency.