US Bridges

Nfa 2509 over Sinking Creek

FairPosted for load

Cocke County, Tennessee · 2.9 M SE of I40-US70 JCT · Structure no. 15025090005

Built
1938
87 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
1,951
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2509 over Sinking Creek is a steel stringer/multi-beam or girder carrying Nfa 2509 over Sinking Creek in Cocke County, Tennessee. It was built in 1938, so it is 87 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 1,951 vehicles a day, roughly 1% of them trucks, projected to reach 3,130 by 2041. The structure is 24 ft (7.4 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa 2509
CrossesSinking Creek
Location2.9 M SE of I40-US70 JCT
RouteCounty Highway 2509
CountyCocke County
StateTennessee
Coordinates35.93605, -83.25995
Functional classRural Minor Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.4 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,951 (2021)
Projected traffic3,130 by 2041
Trucks1%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$502,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2509 over Sinking Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is Nfa 2509 over Sinking 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 2509 over Sinking Creek carry?

About 1,951 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa 2509 over Sinking Creek?

The structure is 24 ft (7.4 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns Nfa 2509 over Sinking Creek?

It is owned by the County Highway Agency.