US Bridges

County Road 46 over Four Mile Run

Fair

Morgan County, Ohio · 0.5 Mile East of SR-60 · Structure no. 5835291

Built
1951
74 years old, rebuilt 1995
Condition
Fair
inspected February 2024
Type
Girder and Floorbeam System
Steel
Length
60 ft
1 main span
Daily traffic
385
2015 count
Owner
County
County Highway Agency

About this bridge

County Road 46 over Four Mile Run is a steel girder and floorbeam system carrying County Road 46 over Four Mile Run in Morgan County, Ohio. It was built in 1951 and reconstructed in 1995, so it is 74 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.

It carries about 385 vehicles a day, roughly 8% of them trucks, projected to reach 534 by 2042. The structure is 60 ft (18.3 m) long and 19 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty Road 46
CrossesFour Mile Run
Location0.5 Mile East of SR-60
RouteCounty Highway 46
CountyMorgan County
StateOhio
Coordinates39.61904, -81.73735
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating32.2 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span56 ft (17 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic385 (2015)
Projected traffic534 by 2042
Trucks8%
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 County Road 46 over Four Mile Run built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1995.

What condition is County Road 46 over Four Mile 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 2024.

How much traffic does County Road 46 over Four Mile Run carry?

About 385 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is County Road 46 over Four Mile Run?

The structure is 60 ft (18.3 m) long with a longest span of 56 ft (17 m) and a deck 19 ft wide.

Who owns County Road 46 over Four Mile Run?

It is owned by the County Highway Agency.