US Bridges

FAS 336 over Six Mile Creek

Fair

Blount County, Tennessee · S. of Maryville · Structure no. 05S24970003

Built
1948
77 years old, rebuilt 1960
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
56 ft
3 main spans
Daily traffic
550
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 336 over Six Mile Creek is a concrete continuous culvert carrying FAS 336 over Six Mile Creek in Blount County, Tennessee. It was built in 1948 and reconstructed in 1960, so it is 77 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 550 vehicles a day, roughly 5% of them trucks, projected to reach 880 by 2042. The structure is 56 ft (17 m) long and 46 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 336
CrossesSix Mile Creek
LocationS. of Maryville
RouteState Highway 336
CountyBlount County
StateTennessee
Coordinates35.62445, -84.02523
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length56 ft (17 m)
Longest span18 ft (5.5 m)
Deck width46 ft (13.9 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2021)
Projected traffic880 by 2042
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 336 over Six Mile Creek built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1960.

What condition is FAS 336 over Six 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 October 2023.

How much traffic does FAS 336 over Six Mile Creek carry?

About 550 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 336 over Six Mile Creek?

The structure is 56 ft (17 m) long with a longest span of 18 ft (5.5 m) and a deck 46 ft wide.

Who owns FAS 336 over Six Mile Creek?

It is owned by the State Highway Agency.