US Bridges

SR 18 over Brinkman Ditch

Good

Henry County, Ohio · 2.07 Mi. West of SR 108 · Structure no. 3500969

Built
1967
58 years old
Condition
Good
inspected July 2024
Type
Slab
Concrete Continuous
Length
54 ft
3 main spans
Daily traffic
550
1975 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Brinkman Ditch is a concrete continuous slab carrying SR 18 over Brinkman Ditch in Henry County, Ohio. It was built in 1967, so it is 58 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 550 vehicles a day, roughly 1% of them trucks, projected to reach 763 by 1995. The structure is 54 ft (16.5 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR 18
CrossesBrinkman Ditch
Location2.07 Mi. West of SR 108
RouteState Highway 18
StateOhio
Coordinates41.25324, -84.17128
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length54 ft (16.5 m)
Longest span18 ft (5.5 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (1975)
Projected traffic763 by 1995
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 18 over Brinkman Ditch built?

It was built in 1967, making it 58 years old in 2025.

What condition is SR 18 over Brinkman 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 July 2024.

How much traffic does SR 18 over Brinkman Ditch carry?

About 550 vehicles per day (1975 count), of which roughly 1% are trucks.

How long is SR 18 over Brinkman Ditch?

The structure is 54 ft (16.5 m) long with a longest span of 18 ft (5.5 m) and a deck 32 ft wide.

Who owns SR 18 over Brinkman Ditch?

It is owned by the State Highway Agency.