US Bridges

Nfa A970 over Stony Creek

Fair

Carter County, Tennessee · S of 91-NE Part of County · Structure no. 100A9700001

Built
1984
41 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
250
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A970 over Stony Creek is a prestressed concrete box beam or girders - single or spread carrying Nfa A970 over Stony Creek in Carter County, Tennessee. It was built in 1984, so it is 41 years old, younger 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 250 vehicles a day, roughly 2% of them trucks, projected to reach 400 by 2041. The structure is 43 ft (13.1 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A970
CrossesStony Creek
LocationS of 91-NE Part of County
RouteCounty Highway 970
CountyCarter County
StateTennessee
Coordinates36.43745, -82.05032
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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 rating66.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic400 by 2041
Trucks2%
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$65,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A970 over Stony Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa A970 over Stony 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 August 2023.

How much traffic does Nfa A970 over Stony Creek carry?

About 250 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A970 over Stony Creek?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.

Who owns Nfa A970 over Stony Creek?

It is owned by the County Highway Agency.