US Bridges

Horner over Stillwater River

FairPosted for load

Darke County, Ohio · .28 MI S Old SR 242 · Structure no. 1946382

Built
1976
49 years old, rebuilt 2023
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
116 ft
1 main span
Daily traffic
351
2015 count
Owner
County
County Highway Agency

About this bridge

Horner over Stillwater River is a steel truss - thru carrying Horner over Stillwater River in Darke County, Ohio. It was built in 1976 and reconstructed in 2023, so it is 49 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. Its operating status is: posted for load restriction.

It carries about 351 vehicles a day, roughly 7% of them trucks, projected to reach 487 by 2035. The structure is 116 ft (35.4 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHorner
CrossesStillwater River
Location.28 MI S Old SR 242
RouteCounty Highway T0124
CountyDarke County
StateOhio
Coordinates40.19818, -84.54117
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating32.2 US tons
Inventory rating17.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length116 ft (35.4 m)
Longest span110 ft (33.5 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2015)
Projected traffic487 by 2035
Trucks7%
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 Horner over Stillwater River built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2023.

What condition is Horner over Stillwater 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 September 2024.

How much traffic does Horner over Stillwater River carry?

About 351 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Horner over Stillwater River?

The structure is 116 ft (35.4 m) long with a longest span of 110 ft (33.5 m) and a deck 27 ft wide.

Who owns Horner over Stillwater River?

It is owned by the County Highway Agency.