US Bridges

FAS 117 over Snake Creek

Fair

McNairy County, Tennessee · South of Adamsville · Structure no. 55S81220005

Built
1957
68 years old, rebuilt 2017
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete
Length
328 ft
1 main span
Daily traffic
1,919
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 117 over Snake Creek is a concrete tee beam carrying FAS 117 over Snake Creek in McNairy County, Tennessee. It was built in 1957 and reconstructed in 2017, so it is 68 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 1,919 vehicles a day, roughly 10% of them trucks, projected to reach 3,568 by 2040. The structure is 328 ft (100 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 117
CrossesSnake Creek
LocationSouth of Adamsville
RouteState Highway 117
CountyMcNairy County
StateTennessee
Coordinates35.21258, -88.39567
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+10 approach)
Design loadHS 20
Structure length328 ft (100 m)
Longest span43 ft (13.1 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,919 (2021)
Projected traffic3,568 by 2040
Trucks10%
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 117 over Snake Creek built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2017.

What condition is FAS 117 over Snake 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 July 2024.

How much traffic does FAS 117 over Snake Creek carry?

About 1,919 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is FAS 117 over Snake Creek?

The structure is 328 ft (100 m) long with a longest span of 43 ft (13.1 m) and a deck 32 ft wide.

Who owns FAS 117 over Snake Creek?

It is owned by the State Highway Agency.