US Bridges

Nfa C531 over Boozy Creek

Fair

Sullivan County, Tennessee · N Off 11W-E of Kingsport · Structure no. 820C5310001

Built
1956
69 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
50 ft
2 main spans
Daily traffic
250
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa C531 over Boozy Creek is a concrete slab carrying Nfa C531 over Boozy Creek in Sullivan County, Tennessee. It was built in 1956, so it is 69 years old, older 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 250 vehicles a day, roughly 2% of them trucks, projected to reach 400 by 2042. The structure is 50 ft (15.3 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNfa C531
CrossesBoozy Creek
LocationN Off 11W-E of Kingsport
RouteCounty Highway 531
CountySullivan County
StateTennessee
Coordinates36.58437, -82.41378
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating93.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckCorrugated steel
Main spans2
Design loadH 15
Structure length50 ft (15.3 m)
Longest span26 ft (8 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic400 by 2042
Trucks2%
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$148,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa C531 over Boozy Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Nfa C531 over Boozy 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 January 2024.

How much traffic does Nfa C531 over Boozy Creek carry?

About 250 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa C531 over Boozy Creek?

The structure is 50 ft (15.3 m) long with a longest span of 26 ft (8 m) and a deck 25 ft wide.

Who owns Nfa C531 over Boozy Creek?

It is owned by the County Highway Agency.