US Bridges

Nfa 2479 (sa 2908) over Williams Creek

Fair

Grainger County, Tennessee · North of SR131 · Structure no. 29024790003

Built
1930
95 years old, rebuilt 1950
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
989
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2479 (sa 2908) over Williams Creek is a steel stringer/multi-beam or girder carrying Nfa 2479 (sa 2908) over Williams Creek in Grainger County, Tennessee. It was built in 1930 and reconstructed in 1950, so it is 95 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 6 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 989 vehicles a day, roughly 3% of them trucks, projected to reach 1,752 by 2041. The structure is 32 ft (9.8 m) long and 19 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa 2479 (sa 2908)
CrossesWilliams Creek
LocationNorth of SR131
RouteCounty Highway 2479
CountyGrainger County
StateTennessee
Coordinates36.29913, -83.59589
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating33.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span29 ft (8.8 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic989 (2021)
Projected traffic1,752 by 2041
Trucks3%
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$208,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2479 (sa 2908) over Williams Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1950.

What condition is Nfa 2479 (sa 2908) over Williams 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 April 2023.

How much traffic does Nfa 2479 (sa 2908) over Williams Creek carry?

About 989 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2479 (sa 2908) over Williams Creek?

The structure is 32 ft (9.8 m) long with a longest span of 29 ft (8.8 m) and a deck 19 ft wide.

Who owns Nfa 2479 (sa 2908) over Williams Creek?

It is owned by the County Highway Agency.