US Bridges

SR 56 over Walnut Run

Fair

Madison County, Ohio · 0.91 Mi. E. C-4 · Structure no. 4901843

Built
1976
49 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
1,740
2015 count
Owner
State
State Highway Agency

About this bridge

SR 56 over Walnut Run is a concrete continuous slab carrying SR 56 over Walnut Run in Madison County, Ohio. It was built in 1976, so it is 49 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 1,740 vehicles a day, roughly 10% of them trucks, projected to reach 2,415 by 2035. The structure is 100 ft (30.5 m) long and 45 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSR 56
CrossesWalnut Run
Location0.91 Mi. E. C-4
RouteState Highway 56
CountyMadison County
StateOhio
Coordinates39.84403, -83.38941
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span38 ft (11.6 m)
Deck width45 ft (13.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,740 (2015)
Projected traffic2,415 by 2035
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 56 over Walnut Run built?

It was built in 1976, making it 49 years old in 2025.

What condition is SR 56 over Walnut 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 July 2024.

How much traffic does SR 56 over Walnut Run carry?

About 1,740 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is SR 56 over Walnut Run?

The structure is 100 ft (30.5 m) long with a longest span of 38 ft (11.6 m) and a deck 45 ft wide.

Who owns SR 56 over Walnut Run?

It is owned by the State Highway Agency.