US Bridges

County Road 31 over Four Mile Run

Good

Morgan County, Ohio · 0.3 Mile North of CR-5 · Structure no. 5835194

Built
1962
63 years old, rebuilt 1988
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
385
2015 count
Owner
County
County Highway Agency

About this bridge

County Road 31 over Four Mile Run is a steel stringer/multi-beam or girder carrying County Road 31 over Four Mile Run in Morgan County, Ohio. It was built in 1962 and reconstructed in 1988, so it is 63 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 385 vehicles a day, roughly 8% of them trucks, projected to reach 534 by 2042. The structure is 46 ft (14 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCounty Road 31
CrossesFour Mile Run
Location0.3 Mile North of CR-5
RouteCounty Highway 31
CountyMorgan County
StateOhio
Coordinates39.66256, -81.80613
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span43 ft (13.1 m)
Deck width16 ft (4.9 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 31 over Four Mile Run built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1988.

What condition is County Road 31 over Four Mile 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 March 2024.

How much traffic does County Road 31 over Four Mile Run carry?

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

How long is County Road 31 over Four Mile Run?

The structure is 46 ft (14 m) long with a longest span of 43 ft (13.1 m) and a deck 16 ft wide.

Who owns County Road 31 over Four Mile Run?

It is owned by the County Highway Agency.