US Bridges

Nfa A471 over Branch

Fair

Obion County, Tennessee · 2.4 MI SW JCT SR5&SR216 · Structure no. 660A4710003

Built
1975
50 years old, rebuilt 2006
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
47 ft
2 main spans
Daily traffic
10
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A471 over Branch is a concrete channel beam carrying Nfa A471 over Branch in Obion County, Tennessee. It was built in 1975 and reconstructed in 2006, so it is 50 years old, older 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 10 vehicles a day, roughly 5% of them trucks, projected to reach 16 by 2041. The structure is 47 ft (14.3 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa A471
CrossesBranch
Location2.4 MI SW JCT SR5&SR216
RouteCounty Highway 471
CountyObion County
StateTennessee
Coordinates36.35453, -89.11289
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating20.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length47 ft (14.3 m)
Longest span29 ft (8.8 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2020)
Projected traffic16 by 2041
Trucks5%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A471 over Branch built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2006.

What condition is Nfa A471 over Branch 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 March 2023.

How much traffic does Nfa A471 over Branch carry?

About 10 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Nfa A471 over Branch?

The structure is 47 ft (14.3 m) long with a longest span of 29 ft (8.8 m) and a deck 26 ft wide.

Who owns Nfa A471 over Branch?

It is owned by the County Highway Agency.