US Bridges

FAS 79 over Slough

Fair

Lake County, Tennessee · 3.5 M W of SR78 · Structure no. 48SR0790023

Built
1984
41 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete Continuous
Length
65 ft
5 main spans
Daily traffic
764
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 79 over Slough is a concrete continuous culvert carrying FAS 79 over Slough in Lake County, Tennessee. It was built in 1984, so it is 41 years old, younger 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 6 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 764 vehicles a day, roughly 5% of them trucks, projected to reach 816 by 2040. The structure is 65 ft (19.9 m) long. If it were closed, the detour would be 75.2 mi (121 km).

Location

Open in Google Maps
CarriesFAS 79
CrossesSlough
Location3.5 M W of SR78
RouteState Highway 79
CountyLake County
StateTennessee
Coordinates36.22714, -89.53736
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length65 ft (19.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic764 (2021)
Projected traffic816 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed75.2 mi (121 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 79 over Slough built?

It was built in 1984, making it 41 years old in 2025.

What condition is FAS 79 over Slough 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 2024.

How much traffic does FAS 79 over Slough carry?

About 764 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 79 over Slough?

The structure is 65 ft (19.9 m) long with a longest span of 12 ft (3.7 m).

Who owns FAS 79 over Slough?

It is owned by the State Highway Agency.