US Bridges

Township Road 470 over Crab Run

FairPosted for load

Holmes County, Ohio · 0.79 Mi. East of SR 179 · Structure no. 3847748

Built
1921
104 years old, rebuilt 1962
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
96
2015 count
Owner
County
County Highway Agency

About this bridge

Township Road 470 over Crab Run is a steel stringer/multi-beam or girder carrying Township Road 470 over Crab Run in Holmes County, Ohio. It was built in 1921 and reconstructed in 1962, so it is 104 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 5 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 96 vehicles a day, roughly 7% of them trucks, projected to reach 133 by 2035. The structure is 50 ft (15.2 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesTownship Road 470
CrossesCrab Run
Location0.79 Mi. East of SR 179
RouteCounty Highway T0470
CountyHolmes County
StateOhio
Coordinates40.63753, -82.12948
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 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 geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.5 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span49 ft (14.9 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2015)
Projected traffic133 by 2035
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Road 470 over Crab Run built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1962.

What condition is Township Road 470 over Crab 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 December 2024.

How much traffic does Township Road 470 over Crab Run carry?

About 96 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Township Road 470 over Crab Run?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.9 m) and a deck 16 ft wide.

Who owns Township Road 470 over Crab Run?

It is owned by the County Highway Agency.