US Bridges

Tillman RD over Trier Drain

Fair

Allen County, Indiana · 00.50 E Hessen Cassel RD · Structure no. 0200296

Built
1975
50 years old, rebuilt 1994
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
7,050
2016 count
Owner
County
County Highway Agency

About this bridge

Tillman RD over Trier Drain is a prestressed concrete box beam or girders - multiple carrying Tillman RD over Trier Drain in Allen County, Indiana. It was built in 1975 and reconstructed in 1994, so it is 50 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 7,050 vehicles a day, roughly 5% of them trucks, projected to reach 10,000 by 2036. The structure is 34 ft (10.4 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesTillman RD
CrossesTrier Drain
Location00.50 E Hessen Cassel RD
RouteCity Street 0
StateIndiana
Coordinates41.01796, -85.0875
Functional classUrban Minor Arterial

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 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.9 US tons
Inventory rating34.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,050 (2016)
Projected traffic10,000 by 2036
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Tillman RD over Trier Drain built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1994.

What condition is Tillman RD over Trier 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 Tillman RD over Trier Drain carry?

About 7,050 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Tillman RD over Trier Drain?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 44 ft wide.

Who owns Tillman RD over Trier Drain?

It is owned by the County Highway Agency.