US Bridges

Nfa A261 over Trail Fork Big Creek

FairPosted for load

Cocke County, Tennessee · Off SR 107-S of Del Rio · Structure no. 150A2610001

Built
1934
91 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
70
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A261 over Trail Fork Big Creek is a steel stringer/multi-beam or girder carrying Nfa A261 over Trail Fork Big Creek in Cocke County, Tennessee. It was built in 1934, so it is 91 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. Its operating status is: posted for load restriction.

It carries about 70 vehicles a day, roughly 2% of them trucks, projected to reach 112 by 2042. The structure is 39 ft (12 m) long and 18 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNfa A261
CrossesTrail Fork Big Creek
LocationOff SR 107-S of Del Rio
RouteCounty Highway 261
Coordinates35.87743, -83.00931
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.6 US tons
Inventory rating18.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length39 ft (12 m)
Longest span35 ft (10.6 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2020)
Projected traffic112 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$511,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A261 over Trail Fork Big Creek built?

It was built in 1934, making it 91 years old in 2025.

What condition is Nfa A261 over Trail Fork Big 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 October 2024.

How much traffic does Nfa A261 over Trail Fork Big Creek carry?

About 70 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A261 over Trail Fork Big Creek?

The structure is 39 ft (12 m) long with a longest span of 35 ft (10.6 m) and a deck 18 ft wide.

Who owns Nfa A261 over Trail Fork Big Creek?

It is owned by the County Highway Agency.