US Bridges

Township Road 55 over Grass Run

Poor

Hardin County, Ohio · .4 MI N of JCT of SR 81 · Structure no. 3350010

Built
1937
88 years old
Condition
Poor
inspected May 2024
Type
Girder and Floorbeam System
Concrete
Length
33 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 concrete girder and floorbeam system carrying Township Road 55 over Grass Run in Hardin County, Ohio. It was built in 1937, so it is 88 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 110 vehicles a day, roughly 7% of them trucks, projected to reach 153 by 2035. The structure is 33 ft (10.1 m) long and 23 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.4 MI N of JCT of SR 81
RouteCounty Highway T0055
CountyHardin County
StateOhio
Coordinates40.78181, -83.804
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating38 US tons
Inventory rating36 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 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 1937, making it 88 years old in 2025.

What condition is Township Road 55 over Grass Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. 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 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 23 ft wide.

Who owns Township Road 55 over Grass Run?

It is owned by the County Highway Agency.