US Bridges

Township Road 55 over Grass Run

Fair

Hardin County, Ohio · .1 MI N of JCT of CR 40 · Structure no. 3350134

Built
1959
66 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
110
2015 count
Owner
County
County Highway Agency

About this bridge

Township Road 55 over Grass Run is a prestressed concrete box beam or girders - multiple carrying Township Road 55 over Grass Run in Hardin County, Ohio. It was built in 1959, so it is 66 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 110 vehicles a day, roughly 7% of them trucks, projected to reach 153 by 2035. The structure is 42 ft (12.8 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTownship Road 55
CrossesGrass Run
Location.1 MI N of JCT of CR 40
RouteCounty Highway 55
CountyHardin County
StateOhio
Coordinates40.77683, -83.80402
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.2 US tons
Inventory rating52.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length42 ft (12.8 m)
Longest span38 ft (11.6 m)
Deck width21 ft (6.5 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2015)
Projected traffic153 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 Township Road 55 over Grass Run built?

It was built in 1959, making it 66 years old in 2025.

What condition is Township Road 55 over Grass 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 May 2024.

How much traffic does Township Road 55 over Grass Run carry?

About 110 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Township Road 55 over Grass Run?

The structure is 42 ft (12.8 m) long with a longest span of 38 ft (11.6 m) and a deck 21 ft wide.

Who owns Township Road 55 over Grass Run?

It is owned by the County Highway Agency.