US Bridges

Trentman RD over Jacob Koehlinger Drain

Fair

Allen County, Indiana · 00.10 S Maples Road · Structure no. 0200214

Built
1979
46 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
547
2018 count
Owner
County
County Highway Agency

About this bridge

Trentman RD over Jacob Koehlinger Drain is a prestressed concrete box beam or girders - multiple carrying Trentman RD over Jacob Koehlinger Drain in Allen County, Indiana. It was built in 1979, so it is 46 years old, younger 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 547 vehicles a day, roughly 7% of them trucks, projected to reach 816 by 2038. The structure is 65 ft (19.9 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTrentman RD
CrossesJacob Koehlinger Drain
Location00.10 S Maples Road
RouteCounty Highway 0
CountyAllen County
StateIndiana
Coordinates41.00229, -85.07609
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating34.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length65 ft (19.9 m)
Longest span61 ft (18.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic547 (2018)
Projected traffic816 by 2038
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$850,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Trentman RD over Jacob Koehlinger Drain built?

It was built in 1979, making it 46 years old in 2025.

What condition is Trentman RD over Jacob Koehlinger 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 Trentman RD over Jacob Koehlinger Drain carry?

About 547 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Trentman RD over Jacob Koehlinger Drain?

The structure is 65 ft (19.9 m) long with a longest span of 61 ft (18.7 m) and a deck 32 ft wide.

Who owns Trentman RD over Jacob Koehlinger Drain?

It is owned by the County Highway Agency.