US Bridges

CR23A Converse RD over Big Darby

Fair

Union County, Ohio · 0.3 MI East of Plain City · Structure no. 8030014

Built
1983
42 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
208 ft
3 main spans
Daily traffic
431
2015 count
Owner
County
County Highway Agency

About this bridge

CR23A Converse RD over Big Darby is a steel continuous stringer/multi-beam or girder carrying CR23A Converse RD over Big Darby in Union County, Ohio. It was built in 1983, so it is 42 years old, younger 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 431 vehicles a day, roughly 7% of them trucks, projected to reach 598 by 2045. The structure is 208 ft (63.4 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR23A Converse RD
CrossesBig Darby
Location0.3 MI East of Plain City
RouteCounty Highway C0023
CountyUnion County
StateOhio
Coordinates40.11389, -83.26348
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78.6 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length208 ft (63.4 m)
Longest span78 ft (23.8 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic431 (2015)
Projected traffic598 by 2045
Trucks7%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR23A Converse RD over Big Darby built?

It was built in 1983, making it 42 years old in 2025.

What condition is CR23A Converse RD over 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 October 2024.

How much traffic does CR23A Converse RD over Big Darby carry?

About 431 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is CR23A Converse RD over Big Darby?

The structure is 208 ft (63.4 m) long with a longest span of 78 ft (23.8 m) and a deck 28 ft wide.

Who owns CR23A Converse RD over Big Darby?

It is owned by the County Highway Agency.