US Bridges

Township Line Road over Little Black Creek

Fair

Mercer County, Ohio · 0.3 Miles South Tama Road · Structure no. 5449014

Built
1999
26 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
25 ft
1 main span
Daily traffic
118
2015 count
Owner
County
County Highway Agency

About this bridge

Township Line Road over Little Black Creek is a concrete box beam or girders - multiple carrying Township Line Road over Little Black Creek in Mercer County, Ohio. It was built in 1999, so it is 26 years old, younger 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 118 vehicles a day, roughly 8% of them trucks, projected to reach 164 by 2035. The structure is 25 ft (7.6 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTownship Line Road
CrossesLittle Black Creek
Location0.3 Miles South Tama Road
RouteCounty Highway T0061
StateOhio
Coordinates40.62833, -84.68942
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic118 (2015)
Projected traffic164 by 2035
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 Township Line Road over Little Black Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Township Line Road over Little Black Creek 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 December 2024.

How much traffic does Township Line Road over Little Black Creek carry?

About 118 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Township Line Road over Little Black Creek?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns Township Line Road over Little Black Creek?

It is owned by the County Highway Agency.