US Bridges

FAS 331 over Little Flat Creek

Fair

Knox County, Tennessee · 3.4 M SW of SR131 · Structure no. 47S25040005

Built
1960
65 years old
Condition
Fair
inspected March 2024
Type
Culvert
Steel
Length
38 ft
2 main spans
Daily traffic
1,972
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 331 over Little Flat Creek is a steel culvert carrying FAS 331 over Little Flat Creek in Knox County, Tennessee. It was built in 1960, so it is 65 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 1,972 vehicles a day, roughly 5% of them trucks, projected to reach 4,032 by 2040. The structure is 38 ft (11.7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 331
CrossesLittle Flat Creek
Location3.4 M SW of SR131
RouteState Highway 331
CountyKnox County
StateTennessee
Coordinates36.14045, -83.79612
Functional classRural Major Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating98.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 15
Structure length38 ft (11.7 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,972 (2021)
Projected traffic4,032 by 2040
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 331 over Little Flat Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is FAS 331 over Little Flat 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 March 2024.

How much traffic does FAS 331 over Little Flat Creek carry?

About 1,972 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 331 over Little Flat Creek?

The structure is 38 ft (11.7 m) long with a longest span of 15 ft (4.6 m).

Who owns FAS 331 over Little Flat Creek?

It is owned by the State Highway Agency.