US Bridges

Nfa A988 over Stony Creek

PoorPosted for load

Carter County, Tennessee · S of SR91-NE Corner of CO · Structure no. 100A9880001

Built
1965
60 years old
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
240
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A988 over Stony Creek is a steel stringer/multi-beam or girder carrying Nfa A988 over Stony Creek in Carter County, Tennessee. It was built in 1965, so it is 60 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 240 vehicles a day, roughly 2% of them trucks, projected to reach 384 by 2042. The structure is 24 ft (7.3 m) long and 17 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNfa A988
CrossesStony Creek
LocationS of SR91-NE Corner of CO
RouteCounty Highway 988
CountyCarter County
StateTennessee
Coordinates36.46133, -82.0143
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating10.7 US tons
Inventory rating8.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2020)
Projected traffic384 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$425,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A988 over Stony Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa A988 over Stony Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Nfa A988 over Stony Creek carry?

About 240 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A988 over Stony Creek?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 17 ft wide.

Who owns Nfa A988 over Stony Creek?

It is owned by the County Highway Agency.