US Bridges

Nfa 815 (sa 9220) over Overflow

Fair

Weakley County, Tennessee · 5 MI E of Obion CO Li · Structure no. 92S80110005

Built
1990
35 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
155 ft
3 main spans
Daily traffic
272
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 815 (sa 9220) over Overflow is a prestressed concrete stringer/multi-beam or girder carrying Nfa 815 (sa 9220) over Overflow in Weakley County, Tennessee. It was built in 1990, so it is 35 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 272 vehicles a day, roughly 3% of them trucks, projected to reach 368 by 2040. The structure is 155 ft (47.2 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 815 (sa 9220)
CrossesOverflow
Location5 MI E of Obion CO Li
RouteCounty Highway 815
CountyWeakley County
StateTennessee
Coordinates36.40365, -88.79005
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length155 ft (47.2 m)
Longest span52 ft (15.8 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic272 (2021)
Projected traffic368 by 2040
Trucks3%
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 815 (sa 9220) over Overflow built?

It was built in 1990, making it 35 years old in 2025.

What condition is Nfa 815 (sa 9220) over Overflow 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 October 2024.

How much traffic does Nfa 815 (sa 9220) over Overflow carry?

About 272 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 815 (sa 9220) over Overflow?

The structure is 155 ft (47.2 m) long with a longest span of 52 ft (15.8 m) and a deck 29 ft wide.

Who owns Nfa 815 (sa 9220) over Overflow?

It is owned by the County Highway Agency.