US Bridges

SR-559 over Trib. Big Darby Creek

Fair

Logan County, Ohio · 1.7MI.N.OF Champaign Co. · Structure no. 4603907

Built
1964
61 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
863
2018 count
Owner
State
State Highway Agency

About this bridge

SR-559 over Trib. Big Darby Creek is a concrete slab carrying SR-559 over Trib. Big Darby Creek in Logan County, Ohio. It was built in 1964, so it is 61 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 863 vehicles a day, roughly 4% of them trucks, projected to reach 1,198 by 2038. The structure is 24 ft (7.3 m) long and 32 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesSR-559
CrossesTrib. Big Darby Creek
Location1.7MI.N.OF Champaign Co.
RouteState Highway 559
CountyLogan County
StateOhio
Coordinates40.2502, -83.57702
Functional classRural Minor 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
Deck7 GoodSome minor problems.
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 inspectionFebruary 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating32.2 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic863 (2018)
Projected traffic1,198 by 2038
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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-559 over Trib. Big Darby Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is SR-559 over Trib. 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 February 2024.

How much traffic does SR-559 over Trib. Big Darby Creek carry?

About 863 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is SR-559 over Trib. Big Darby Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.

Who owns SR-559 over Trib. Big Darby Creek?

It is owned by the State Highway Agency.