US Bridges

FAS 99 over Little Buffalo River

Fair

Lewis County, Tennessee · 5 M E of North Riverside · Structure no. 510A0900001

Built
1964
61 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
257 ft
9 main spans
Daily traffic
154
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 99 over Little Buffalo River is a concrete tee beam carrying FAS 99 over Little Buffalo River in Lewis County, Tennessee. It was built in 1964, so it is 61 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 154 vehicles a day, roughly 5% of them trucks, projected to reach 213 by 2041. The structure is 257 ft (78.2 m) long and 29 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesFAS 99
CrossesLittle Buffalo River
Location5 M E of North Riverside
RouteState Highway 99
Coordinates35.44641, -87.53917
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating30.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length257 ft (78.2 m)
Longest span28 ft (8.6 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic154 (2021)
Projected traffic213 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.6 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 99 over Little Buffalo River built?

It was built in 1964, making it 61 years old in 2025.

What condition is FAS 99 over Little Buffalo 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 May 2023.

How much traffic does FAS 99 over Little Buffalo River carry?

About 154 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 99 over Little Buffalo River?

The structure is 257 ft (78.2 m) long with a longest span of 28 ft (8.6 m) and a deck 29 ft wide.

Who owns FAS 99 over Little Buffalo River?

It is owned by the State Highway Agency.