US Bridges

Nfa A354 over Four Mile Creek

Fair

Polk County, Tennessee · In City of Benton · Structure no. 70S43130003

Built
1980
45 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
2,400
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A354 over Four Mile Creek is a concrete continuous culvert carrying Nfa A354 over Four Mile Creek in Polk County, Tennessee. It was built in 1980, so it is 45 years old, younger 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 2,400 vehicles a day, roughly 6% of them trucks, projected to reach 3,840 by 2042. The structure is 27 ft (8.2 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A354
CrossesFour Mile Creek
LocationIn City of Benton
RouteCity Street 354
CountyPolk County
StateTennessee
Coordinates35.17277, -84.6471
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width43 ft (13 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2020)
Projected traffic3,840 by 2042
Trucks6%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A354 over Four Mile Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Nfa A354 over Four Mile Creek 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 Four Mile Creek carry?

About 2,400 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Nfa A354 over Four Mile Creek?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 43 ft wide.

Who owns Nfa A354 over Four Mile Creek?

It is owned by the City or Municipal Highway Agency.