US Bridges

Nfa A354 over Branch

FairPosted for load

Polk County, Tennessee · In City of Benton · Structure no. 70S43130001

Built
1954
71 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
3,740
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A354 over Branch is a concrete continuous culvert carrying Nfa A354 over Branch in Polk 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 6 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 3,740 vehicles a day, roughly 6% of them trucks, projected to reach 5,984 by 2042. The structure is 23 ft (7 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A354
CrossesBranch
LocationIn City of Benton
RouteCity Street 354
CountyPolk County
StateTennessee
Coordinates35.1732, -84.652
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width35 ft (10.6 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,740 (2020)
Projected traffic5,984 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$155,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A354 over Branch built?

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

What condition is Nfa A354 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 June 2024.

How much traffic does Nfa A354 over Branch carry?

About 3,740 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Nfa A354 over Branch?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 35 ft wide.

Who owns Nfa A354 over Branch?

It is owned by the City or Municipal Highway Agency.