US Bridges

Nfa A651 over Overflow

Good

Weakley County, Tennessee · 3 MI E of Obion CO · Structure no. 920A6510001

Built
1984
41 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
80
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A651 over Overflow is a concrete continuous culvert carrying Nfa A651 over Overflow in Weakley 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 80 vehicles a day, roughly 2% of them trucks, projected to reach 128 by 2040. The structure is 22 ft (6.7 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNfa A651
CrossesOverflow
Location3 MI E of Obion CO
RouteCounty Highway 651
Coordinates36.30741, -88.92186
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.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating46.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2020)
Projected traffic128 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 A651 over Overflow built?

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

What condition is Nfa A651 over Overflow 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 October 2024.

How much traffic does Nfa A651 over Overflow carry?

About 80 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A651 over Overflow?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 28 ft wide.

Who owns Nfa A651 over Overflow?

It is owned by the County Highway Agency.