US Bridges

Trammel Road over Black Creek

Fair

Allen County, Indiana · 0.37 MI NW Antwerp RD · Structure no. 0200688

Built
1970
55 years old
Condition
Fair
inspected June 2024
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
1,500
2024 count
Owner
County
County Highway Agency

About this bridge

Trammel Road over Black Creek is a steel culvert carrying Trammel Road over Black Creek in Allen County, Indiana. It was built in 1970, so it is 55 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 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 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 1,500 by 2044. The structure is 21 ft (6.3 m) long and 114 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesTrammel Road
CrossesBlack Creek
Location0.37 MI NW Antwerp RD
RouteCounty Highway 108
CountyAllen County
StateIndiana
Coordinates41.19875, -84.93179
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating60.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span20 ft (6.1 m)
Deck width114 ft (34.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2024)
Projected traffic1,500 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Trammel Road over Black Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Trammel Road over Black Creek 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 June 2024.

How much traffic does Trammel Road over Black Creek carry?

About 1,500 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Trammel Road over Black Creek?

The structure is 21 ft (6.3 m) long with a longest span of 20 ft (6.1 m) and a deck 114 ft wide.

Who owns Trammel Road over Black Creek?

It is owned by the County Highway Agency.