US Bridges

Nfa A689 over Buck Creek

Fair

Carter County, Tennessee · N of SR37-E of Roan Mtn. · Structure no. 100A6890001

Built
1986
39 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
47 ft
2 main spans
Daily traffic
230
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A689 over Buck Creek is a concrete continuous culvert carrying Nfa A689 over Buck Creek in Carter County, Tennessee. It was built in 1986, so it is 39 years old, younger than the Tennessee average of 47.4 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 230 vehicles a day, roughly 2% of them trucks, projected to reach 368 by 2041. The structure is 47 ft (14.4 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A689
CrossesBuck Creek
LocationN of SR37-E of Roan Mtn.
RouteCounty Highway 689
CountyCarter County
StateTennessee
Coordinates36.19402, -82.0534
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length47 ft (14.4 m)
Longest span22 ft (6.7 m)
Deck width26 ft (8 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2020)
Projected traffic368 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$103,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A689 over Buck Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nfa A689 over Buck 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 July 2023.

How much traffic does Nfa A689 over Buck Creek carry?

About 230 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A689 over Buck Creek?

The structure is 47 ft (14.4 m) long with a longest span of 22 ft (6.7 m) and a deck 26 ft wide.

Who owns Nfa A689 over Buck Creek?

It is owned by the County Highway Agency.