US Bridges

SR 31 over Panther Creek

Good

Hardin County, Ohio · 3.65 MI N of Har/Uni Co. · Structure no. 3300218

Built
1941
84 years old, rebuilt 1971
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
134 ft
3 main spans
Daily traffic
4,611
2018 count
Owner
State
State Highway Agency

About this bridge

SR 31 over Panther Creek is a steel continuous stringer/multi-beam or girder carrying SR 31 over Panther Creek in Hardin County, Ohio. It was built in 1941 and reconstructed in 1971, so it is 84 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 4,611 vehicles a day, roughly 31% of them trucks, projected to reach 6,400 by 2038. The structure is 134 ft (40.8 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSR 31
CrossesPanther Creek
Location3.65 MI N of Har/Uni Co.
RouteState Highway 31
CountyHardin County
StateOhio
Coordinates40.54958, -83.53273
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 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 rating46.4 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length134 ft (40.8 m)
Longest span50 ft (15.2 m)
Deck width34 ft (10.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,611 (2018)
Projected traffic6,400 by 2038
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 31 over Panther Creek built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1971.

What condition is SR 31 over Panther Creek 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 June 2023.

How much traffic does SR 31 over Panther Creek carry?

About 4,611 vehicles per day (2018 count), of which roughly 31% are trucks.

How long is SR 31 over Panther Creek?

The structure is 134 ft (40.8 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.

Who owns SR 31 over Panther Creek?

It is owned by the State Highway Agency.