US Bridges

Nfa A718 over Flint River

GoodPosted for load

Lincoln County, Tennessee · 4 M. Sw. Flintville. · Structure no. 520A7180001

Built
2006
19 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
281 ft
4 main spans
Daily traffic
100
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A718 over Flint River is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa A718 over Flint River in Lincoln County, Tennessee. It was built in 2006, so it is 19 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 2% of them trucks, projected to reach 160 by 2042. The structure is 281 ft (85.6 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa A718
CrossesFlint River
Location4 M. Sw. Flintville.
RouteCounty Highway 718
Coordinates35.0334, -86.47833
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20.7 US tons
Inventory rating16.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length281 ft (85.6 m)
Longest span70 ft (21.3 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic160 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 A718 over Flint River built?

It was built in 2006, making it 19 years old in 2025.

What condition is Nfa A718 over Flint River 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 A718 over Flint River carry?

About 100 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A718 over Flint River?

The structure is 281 ft (85.6 m) long with a longest span of 70 ft (21.3 m) and a deck 24 ft wide.

Who owns Nfa A718 over Flint River?

It is owned by the County Highway Agency.