US Bridges

Clayton RD over Bohnke Drain

Fair

Allen County, Indiana · 00.10 N Flatrock RD · Structure no. 0200236

Built
1972
53 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
67 ft
3 main spans
Daily traffic
156
2018 count
Owner
County
County Highway Agency

About this bridge

Clayton RD over Bohnke Drain is a prestressed concrete continuous box beam or girders - multiple carrying Clayton RD over Bohnke Drain in Allen County, Indiana. It was built in 1972, so it is 53 years old, older than the Indiana average of 46.6 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 156 vehicles a day, roughly 5% of them trucks, projected to reach 233 by 2038. The structure is 67 ft (20.5 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesClayton RD
CrossesBohnke Drain
Location00.10 N Flatrock RD
RouteCounty Highway 0
StateIndiana
Coordinates40.96396, -84.90076
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.6 US tons
Inventory rating40.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length67 ft (20.5 m)
Longest span22 ft (6.8 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic156 (2018)
Projected traffic233 by 2038
Trucks5%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$275,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Clayton RD over Bohnke Drain built?

It was built in 1972, making it 53 years old in 2025.

What condition is Clayton RD over Bohnke Drain 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 May 2024.

How much traffic does Clayton RD over Bohnke Drain carry?

About 156 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Clayton RD over Bohnke Drain?

The structure is 67 ft (20.5 m) long with a longest span of 22 ft (6.8 m) and a deck 32 ft wide.

Who owns Clayton RD over Bohnke Drain?

It is owned by the County Highway Agency.