US Bridges

Nfa A518 over Sinking Creek

Good

Greene County, Tennessee · 1.5 M NW of SR107-SR351 J · Structure no. 300A5180001

Built
1984
41 years old
Condition
Good
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
290
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A518 over Sinking Creek is a prestressed concrete box beam or girders - multiple carrying Nfa A518 over Sinking Creek in Greene 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 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 290 vehicles a day, roughly 2% of them trucks, projected to reach 464 by 2042. The structure is 24 ft (7.3 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNfa A518
CrossesSinking Creek
Location1.5 M NW of SR107-SR351 J
RouteCounty Highway 518
Coordinates36.1741, -82.7223
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating32.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span21 ft (6.4 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic290 (2020)
Projected traffic464 by 2042
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A518 over Sinking Creek built?

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

What condition is Nfa A518 over Sinking 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 February 2023.

How much traffic does Nfa A518 over Sinking Creek carry?

About 290 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A518 over Sinking Creek?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.4 m) and a deck 24 ft wide.

Who owns Nfa A518 over Sinking Creek?

It is owned by the County Highway Agency.