Cornelius Road over Flat Head Run

Fair

Adams County, Ohio · .75 MI S of Highland Cnty · Structure no. 0134791

Built: 1930; 95 years old, rebuilt 1985
Condition: Fair; inspected October 2024
Type: Slab; Concrete Continuous
Length: 30 ft; 2 main spans
Daily traffic: 477; 2015 count
Owner: County; County Highway Agency

About this bridge

Cornelius Road over Flat Head Run is a concrete continuous slab carrying Cornelius Road over Flat Head Run in Adams County, Ohio. It was built in 1930 and reconstructed in 1985, so it is 95 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 477 vehicles a day, roughly 8% of them trucks, projected to reach 662 by 2035. The structure is 30 ft (9.1 m) long and 15 ft wide.

Location

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CarriesCornelius Road

CrossesFlat Head Run

Location.75 MI S of Highland Cnty

RouteCounty Highway C105A

CountyAdams County

StateOhio

Coordinates39.02441, -83.51365

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

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 geometry2: Basically intolerable, requiring high priority of replacement

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating43 US tons

Inventory rating30 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans2

Design loadHS 20

Structure length30 ft (9.1 m)

Longest span16 ft (4.9 m)

Deck width15 ft (4.6 m)

Roadway width14 ft (4.3 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic477 (2015)

Projected traffic662 by 2035

Trucks8%

Lanes on structure1

Traffic directionOne-lane bridge for two-way traffic

CarriesHighway

CrossesWaterway

Detour if closed—

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 Cornelius Road over Flat Head Run built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1985.

What condition is Cornelius Road over Flat Head Run 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 Cornelius Road over Flat Head Run carry?

About 477 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Cornelius Road over Flat Head Run?

The structure is 30 ft (9.1 m) long with a longest span of 16 ft (4.9 m) and a deck 15 ft wide.

Who owns Cornelius Road over Flat Head Run?

It is owned by the County Highway Agency.