US Bridges

Nfa 810 (sa 8421) over Branch

Fair

Tipton County, Tennessee · 0.1 MI W of Mason · Structure no. 84S80710011

Built
1960
65 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
2,044
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa 810 (sa 8421) over Branch is a concrete continuous culvert carrying Nfa 810 (sa 8421) over Branch in Tipton County, Tennessee. It was built in 1960, so it is 65 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 2,044 vehicles a day, roughly 3% of them trucks, projected to reach 3,024 by 2042. The structure is 21 ft (6.4 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNfa 810 (sa 8421)
CrossesBranch
Location0.1 MI W of Mason
RouteCity Street 810
CountyTipton County
StateTennessee
Coordinates35.40864, -89.54258
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,044 (2021)
Projected traffic3,024 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$91,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 810 (sa 8421) over Branch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa 810 (sa 8421) 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 February 2024.

How much traffic does Nfa 810 (sa 8421) over Branch carry?

About 2,044 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 810 (sa 8421) over Branch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 28 ft wide.

Who owns Nfa 810 (sa 8421) over Branch?

It is owned by the City or Municipal Highway Agency.