US Bridges

Nfa A461 over Branch

Fair

Roane County, Tennessee · NW of SR61-N of I40 · Structure no. 730A4610003

Built
1955
70 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
20
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A461 over Branch is a concrete continuous culvert carrying Nfa A461 over Branch in Roane County, Tennessee. It was built in 1955, so it is 70 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 20 vehicles a day, roughly 2% of them trucks, projected to reach 32 by 2042. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesNfa A461
CrossesBranch
LocationNW of SR61-N of I40
RouteCity Street 461
CountyRoane County
StateTennessee
Coordinates35.91378, -84.58283
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic32 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A461 over Branch built?

It was built in 1955, making it 70 years old in 2025.

What condition is Nfa A461 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 A461 over Branch carry?

About 20 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A461 over Branch?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns Nfa A461 over Branch?

It is owned by the City or Municipal Highway Agency.