US Bridges

Township Road 51 over Aldridge Run

Fair

Morgan County, Ohio · 700 Feet North of CR-17 · Structure no. 5834392

Built
1918
107 years old, rebuilt 1991
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
209
2015 count
Owner
County
County Highway Agency

About this bridge

Township Road 51 over Aldridge Run is a steel stringer/multi-beam or girder carrying Township Road 51 over Aldridge Run in Morgan County, Ohio. It was built in 1918 and reconstructed in 1991, so it is 107 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 209 vehicles a day, roughly 7% of them trucks, projected to reach 290 by 2042. The structure is 34 ft (10.4 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesTownship Road 51
CrossesAldridge Run
Location700 Feet North of CR-17
RouteCounty Highway 51
CountyMorgan County
StateOhio
Coordinates39.53042, -81.83441
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98.5 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic209 (2015)
Projected traffic290 by 2042
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 51 over Aldridge Run built?

It was built in 1918, making it 107 years old in 2025. It was reconstructed in 1991.

What condition is Township Road 51 over Aldridge 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 February 2025.

How much traffic does Township Road 51 over Aldridge Run carry?

About 209 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Township Road 51 over Aldridge Run?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 16 ft wide.

Who owns Township Road 51 over Aldridge Run?

It is owned by the County Highway Agency.