US Bridges

Township Road 55 over Grass Run

Good

Hardin County, Ohio · .1 MI S of JCT of SR 81 · Structure no. 3348865

Built
1976
49 years old, rebuilt 2001
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
235
2015 count
Owner
County
County Highway Agency

About this bridge

Township Road 55 over Grass Run is a steel stringer/multi-beam or girder carrying Township Road 55 over Grass Run in Hardin County, Ohio. It was built in 1976 and reconstructed in 2001, so it is 49 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 235 vehicles a day, roughly 5% of them trucks, projected to reach 326 by 2035. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTownship Road 55
CrossesGrass Run
Location.1 MI S of JCT of SR 81
RouteCounty Highway T0055
StateOhio
Coordinates40.77378, -83.80403
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic235 (2015)
Projected traffic326 by 2035
Trucks5%
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 1976, making it 49 years old in 2025. It was reconstructed in 2001.

What condition is Township Road 55 over Grass Run 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 May 2023.

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

About 235 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Township Road 55 over Grass Run?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 24 ft wide.

Who owns Township Road 55 over Grass Run?

It is owned by the County Highway Agency.