US Bridges

Nfa 808 (sa 8412) over Branch

FairPosted for load

Tipton County, Tennessee · 5 MI W of Covington · Structure no. 84S81930031

Built
1954
71 years old
Condition
Fair
inspected March 2024
Type
Channel Beam
Concrete
Length
29 ft
1 main span
Daily traffic
736
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 808 (sa 8412) over Branch is a concrete channel beam carrying Nfa 808 (sa 8412) over Branch in Tipton County, Tennessee. It was built in 1954, so it is 71 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 736 vehicles a day, roughly 3% of them trucks, projected to reach 728 by 2042. The structure is 29 ft (8.8 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNfa 808 (sa 8412)
CrossesBranch
Location5 MI W of Covington
RouteCounty Highway 808
CountyTipton County
StateTennessee
Coordinates35.60286, -89.74261
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 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 rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span29 ft (8.8 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic736 (2021)
Projected traffic728 by 2042
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$508,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 808 (sa 8412) over Branch built?

It was built in 1954, making it 71 years old in 2025.

What condition is Nfa 808 (sa 8412) 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 2024.

How much traffic does Nfa 808 (sa 8412) over Branch carry?

About 736 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 808 (sa 8412) over Branch?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m) and a deck 25 ft wide.

Who owns Nfa 808 (sa 8412) over Branch?

It is owned by the County Highway Agency.