US Bridges

FAS 310 over Conasauga Creek

FairPosted for load

McMinn County, Tennessee · 3 MI FM Monroe Mcminn C L · Structure no. 54S42760007

Built
1973
52 years old, rebuilt 2022
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
102 ft
3 main spans
Daily traffic
1,233
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 310 over Conasauga Creek is a steel stringer/multi-beam or girder carrying FAS 310 over Conasauga Creek in McMinn County, Tennessee. It was built in 1973 and reconstructed in 2022, so it is 52 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. Its operating status is: posted for load restriction.

It carries about 1,233 vehicles a day, roughly 6% of them trucks, projected to reach 1,973 by 2042. The structure is 102 ft (31.1 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 310
CrossesConasauga Creek
Location3 MI FM Monroe Mcminn C L
RouteState Highway 310
CountyMcMinn County
StateTennessee
Coordinates35.3457, -84.45194
Functional classRural Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length102 ft (31.1 m)
Longest span40 ft (12.2 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,233 (2021)
Projected traffic1,973 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

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$400,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 310 over Conasauga Creek built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2022.

What condition is FAS 310 over Conasauga 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 April 2023.

How much traffic does FAS 310 over Conasauga Creek carry?

About 1,233 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is FAS 310 over Conasauga Creek?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.2 m) and a deck 25 ft wide.

Who owns FAS 310 over Conasauga Creek?

It is owned by the State Highway Agency.