US Bridges

C21 Lafayet Pl Cty over Branch Big Darby

Fair

Union County, Ohio · 0.7 MI South of SR161 · Structure no. 8030499

Built
1930
95 years old, rebuilt 1986
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
809
2015 count
Owner
County
County Highway Agency

About this bridge

C21 Lafayet Pl Cty over Branch Big Darby is a prestressed concrete box beam or girders - multiple carrying C21 Lafayet Pl Cty over Branch Big Darby in Union County, Ohio. It was built in 1930 and reconstructed in 1986, so it is 95 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 809 vehicles a day, roughly 8% of them trucks, projected to reach 1,123 by 2045. The structure is 25 ft (7.6 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesC21 Lafayet Pl Cty
CrossesBranch Big Darby
Location0.7 MI South of SR161
RouteCounty Highway C0021
CountyUnion County
StateOhio
Coordinates40.10964, -83.28591
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic809 (2015)
Projected traffic1,123 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$46,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C21 Lafayet Pl Cty over Branch Big Darby built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1986.

What condition is C21 Lafayet Pl Cty over Branch Big Darby 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 C21 Lafayet Pl Cty over Branch Big Darby carry?

About 809 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is C21 Lafayet Pl Cty over Branch Big Darby?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.

Who owns C21 Lafayet Pl Cty over Branch Big Darby?

It is owned by the County Highway Agency.