US Bridges

Nfa B185 over Trammel Creek

Good

Macon County, Tennessee · 7 M N of Eulia · Structure no. 560B1850001

Built
1984
41 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
64 ft
4 main spans
Daily traffic
150
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa B185 over Trammel Creek is a concrete continuous culvert carrying Nfa B185 over Trammel Creek in Macon County, Tennessee. It was built in 1984, so it is 41 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 1% of them trucks, projected to reach 240 by 2041. The structure is 64 ft (19.5 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNfa B185
CrossesTrammel Creek
Location7 M N of Eulia
RouteCounty Highway 185
Coordinates36.62467, -86.19595
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span15 ft (4.6 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic240 by 2041
Trucks1%
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 Nfa B185 over Trammel Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa B185 over Trammel Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Nfa B185 over Trammel Creek carry?

About 150 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa B185 over Trammel Creek?

The structure is 64 ft (19.5 m) long with a longest span of 15 ft (4.6 m) and a deck 29 ft wide.

Who owns Nfa B185 over Trammel Creek?

It is owned by the County Highway Agency.