US Bridges

Nfa A974 over Stony Creek

Good

Carter County, Tennessee · S of 91-NE Part of County · Structure no. 100A9740001

Built
2021
4 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
51 ft
3 main spans
Daily traffic
150
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A974 over Stony Creek is a concrete culvert carrying Nfa A974 over Stony Creek in Carter County, Tennessee. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150 vehicles a day, roughly 2% of them trucks, projected to reach 240 by 2041. The structure is 51 ft (15.5 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNfa A974
CrossesStony Creek
LocationS of 91-NE Part of County
RouteCounty Highway 974
CountyCarter County
StateTennessee
Coordinates36.44615, -82.0444
Functional classRural Local

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.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length51 ft (15.5 m)
Longest span16 ft (4.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic240 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$644,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A974 over Stony Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is Nfa A974 over Stony 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 August 2023.

How much traffic does Nfa A974 over Stony Creek carry?

About 150 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A974 over Stony Creek?

The structure is 51 ft (15.5 m) long with a longest span of 16 ft (4.9 m) and a deck 26 ft wide.

Who owns Nfa A974 over Stony Creek?

It is owned by the County Highway Agency.