US Bridges

FAP 33 over Conasauga River

Fair

Polk County, Tennessee · 12.7 Miles Sw.Of Benton · Structure no. 70SR0330003

Built
1926
99 years old, rebuilt 1965
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
281 ft
1 main span
Daily traffic
3,373
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 33 over Conasauga River is a prestressed concrete box beam or girders - multiple carrying FAP 33 over Conasauga River in Polk County, Tennessee. It was built in 1926 and reconstructed in 1965, so it is 99 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.

It carries about 3,373 vehicles a day, roughly 10% of them trucks, projected to reach 5,397 by 2042. The structure is 281 ft (85.7 m) long and 36 ft wide. If it were closed, the detour would be 37.9 mi (61 km).

Location

Open in Google Maps
CarriesFAP 33
CrossesConasauga River
Location12.7 Miles Sw.Of Benton
RouteU.S. Route 411
CountyPolk County
StateTennessee
Coordinates35.00948, -84.7339
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+7 approach)
Design loadH 15
Structure length281 ft (85.7 m)
Longest span81 ft (24.8 m)
Deck width36 ft (11.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,373 (2021)
Projected traffic5,397 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.9 mi (61 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$650,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP 33 over Conasauga River built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1965.

What condition is FAP 33 over Conasauga River 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 April 2024.

How much traffic does FAP 33 over Conasauga River carry?

About 3,373 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is FAP 33 over Conasauga River?

The structure is 281 ft (85.7 m) long with a longest span of 81 ft (24.8 m) and a deck 36 ft wide.

Who owns FAP 33 over Conasauga River?

It is owned by the State Highway Agency.