US Bridges

Nfa 2624 over Buffalo Creek

Good

Unicoi County, Tennessee · N of Unicoi near SR 36 · Structure no. 860A0030001

Built
2003
22 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
516
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2624 over Buffalo Creek is a concrete culvert carrying Nfa 2624 over Buffalo Creek in Unicoi County, Tennessee. It was built in 2003, so it is 22 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 516 vehicles a day, roughly 25% of them trucks, projected to reach 864 by 2040. The structure is 24 ft (7.2 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNfa 2624
CrossesBuffalo Creek
LocationN of Unicoi near SR 36
RouteCity Street 2624
Coordinates36.24252, -82.32298
Functional classUrban Collector

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.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length24 ft (7.2 m)
Longest span22 ft (6.7 m)
Deck width26 ft (8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic516 (2021)
Projected traffic864 by 2040
Trucks25%
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 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 Nfa 2624 over Buffalo Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is Nfa 2624 over Buffalo 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 July 2024.

How much traffic does Nfa 2624 over Buffalo Creek carry?

About 516 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is Nfa 2624 over Buffalo Creek?

The structure is 24 ft (7.2 m) long with a longest span of 22 ft (6.7 m) and a deck 26 ft wide.

Who owns Nfa 2624 over Buffalo Creek?

It is owned by the County Highway Agency.