US Bridges

SR 81 over Hog Creek

Fair

Hardin County, Ohio · 3.36 MI East of SR 235 · Structure no. 3301028

Built
1966
59 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
1,055
2021 count
Owner
State
State Highway Agency

About this bridge

SR 81 over Hog Creek is a concrete continuous slab carrying SR 81 over Hog Creek in Hardin 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 5 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 1,055 vehicles a day, roughly 8% of them trucks, projected to reach 731 by 2035. The structure is 93 ft (28.3 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 81
CrossesHog Creek
Location3.36 MI East of SR 235
RouteState Highway 81
CountyHardin County
StateOhio
Coordinates40.77665, -83.75918
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating50 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length93 ft (28.3 m)
Longest span35 ft (10.7 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,055 (2021)
Projected traffic731 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 81 over Hog Creek built?

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

What condition is SR 81 over Hog Creek 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 81 over Hog Creek carry?

About 1,055 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is SR 81 over Hog Creek?

The structure is 93 ft (28.3 m) long with a longest span of 35 ft (10.7 m) and a deck 36 ft wide.

Who owns SR 81 over Hog Creek?

It is owned by the State Highway Agency.