US Bridges

County Road 84 over Oates Ditch

Good

Hardin County, Ohio · .6 MI W of JCT of CR 175 · Structure no. 3341349

Built
1991
34 years old, rebuilt 2024
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
30 ft
1 main span
Daily traffic
386
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 84 over Oates Ditch is a concrete box beam or girders - multiple carrying County Road 84 over Oates Ditch in Hardin County, Ohio. It was built in 1991 and reconstructed in 2024, so it is 34 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 386 vehicles a day, roughly 8% of them trucks, projected to reach 536 by 2044. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty Road 84
CrossesOates Ditch
Location.6 MI W of JCT of CR 175
RouteCounty Highway 84
CountyHardin County
StateOhio
Coordinates40.71003, -83.58323
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.1 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic386 (2020)
Projected traffic536 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 County Road 84 over Oates Ditch built?

It was built in 1991, making it 34 years old in 2025. It was reconstructed in 2024.

What condition is County Road 84 over Oates Ditch 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 May 2024.

How much traffic does County Road 84 over Oates Ditch carry?

About 386 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is County Road 84 over Oates Ditch?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 24 ft wide.

Who owns County Road 84 over Oates Ditch?

It is owned by the County Highway Agency.