US Bridges

SR-4 over C51(HARSHMAN Road)

Fair

Montgomery County, Ohio · 1.25MI.SW. of Jct. SR-444 · Structure no. 5700906

Built
1959
66 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
201 ft
4 main spans
Daily traffic
9,895
2015 count
Owner
State
State Highway Agency

About this bridge

SR-4 over C51(HARSHMAN Road) is a concrete continuous slab carrying SR-4 over C51(HARSHMAN Road) in Montgomery County, Ohio. It was built in 1959, so it is 66 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 9,895 vehicles a day, roughly 9% of them trucks, projected to reach 13,734 by 2035. The structure is 201 ft (61.3 m) long and 64 ft wide.

Location

Open in Google Maps
CarriesSR-4
CrossesC51(HARSHMAN Road)
Location1.25MI.SW. of Jct. SR-444
RouteState Highway 4
CountyMontgomery County
StateOhio
Coordinates39.79309, -84.12792
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length201 ft (61.3 m)
Longest span52 ft (15.9 m)
Deck width64 ft (19.4 m)
Roadway width60 ft (18.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,895 (2015)
Projected traffic13,734 by 2035
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-4 over C51(HARSHMAN Road) built?

It was built in 1959, making it 66 years old in 2025.

What condition is SR-4 over C51(HARSHMAN Road) 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 September 2024.

How much traffic does SR-4 over C51(HARSHMAN Road) carry?

About 9,895 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is SR-4 over C51(HARSHMAN Road)?

The structure is 201 ft (61.3 m) long with a longest span of 52 ft (15.9 m) and a deck 64 ft wide.

Who owns SR-4 over C51(HARSHMAN Road)?

It is owned by the State Highway Agency.