US Bridges

Nfa 2479 (sa 2908) over Williams Creek

Good

Grainger County, Tennessee · North of SR131 · Structure no. 29024790007

Built
1996
29 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
36 ft
2 main spans
Daily traffic
989
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2479 (sa 2908) over Williams Creek is a concrete continuous culvert carrying Nfa 2479 (sa 2908) over Williams Creek in Grainger County, Tennessee. It was built in 1996, so it is 29 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 989 vehicles a day, roughly 3% of them trucks, projected to reach 1,752 by 2041. The structure is 36 ft (10.9 m) long and 30 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
Coordinates36.30888, -83.6019
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
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 rating96.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span17 ft (5.2 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.4 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 statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$116,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

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

It was built in 1996, making it 29 years old in 2025.

What condition is Nfa 2479 (sa 2908) over Williams Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. 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 36 ft (10.9 m) long with a longest span of 17 ft (5.2 m) and a deck 30 ft wide.

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

It is owned by the County Highway Agency.