US Bridges

SR 40 over Big Darby Creek

Fair

Madison County, Ohio · 1.98 MI N of SR142 · Structure no. 4901029

Built
1940
85 years old, rebuilt 1984
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete
Length
513 ft
2 main spans
Daily traffic
9,659
2015 count
Owner
State
State Highway Agency

About this bridge

SR 40 over Big Darby Creek is a concrete arch - deck carrying SR 40 over Big Darby Creek in Madison County, Ohio. It was built in 1940 and reconstructed in 1984, so it is 85 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 9,659 vehicles a day, roughly 2% of them trucks, projected to reach 13,407 by 2037. The structure is 513 ft (156.4 m) long and 64 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 40
CrossesBig Darby Creek
Location1.98 MI N of SR142
RouteU.S. Route 40
CountyMadison County
StateOhio
Coordinates39.94732, -83.23656
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2 (+6 approach)
Design loadHS 20 + Mod
Structure length513 ft (156.4 m)
Longest span161 ft (49.1 m)
Deck width64 ft (19.5 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,659 (2015)
Projected traffic13,407 by 2037
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 40 over Big Darby Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1984.

What condition is SR 40 over Big Darby Creek 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 40 over Big Darby Creek carry?

About 9,659 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is SR 40 over Big Darby Creek?

The structure is 513 ft (156.4 m) long with a longest span of 161 ft (49.1 m) and a deck 64 ft wide.

Who owns SR 40 over Big Darby Creek?

It is owned by the State Highway Agency.