US Bridges

FAS 85 over West Fork Obey River

Fair

Overton County, Tennessee · 1.8 MI S of SR 52 · Structure no. 67SR0850009

Built
1966
59 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
149 ft
3 main spans
Daily traffic
124
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 85 over West Fork Obey River is a prestressed concrete continuous stringer/multi-beam or girder carrying FAS 85 over West Fork Obey River in Overton County, Tennessee. It was built in 1966, so it is 59 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 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 124 vehicles a day, roughly 4% of them trucks, projected to reach 128 by 2040. The structure is 149 ft (45.5 m) long and 36 ft wide. If it were closed, the detour would be 57.8 mi (93 km).

CarriesFAS 85
CrossesWest Fork Obey River
Location1.8 MI S of SR 52
RouteState Highway 85
Coordinates36.31462, -85.18134
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating33.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length149 ft (45.5 m)
Longest span50 ft (15.2 m)
Deck width36 ft (11.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic124 (2021)
Projected traffic128 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed57.8 mi (93 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 85 over West Fork Obey River built?

It was built in 1966, making it 59 years old in 2025.

What condition is FAS 85 over West Fork Obey 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 November 2024.

How much traffic does FAS 85 over West Fork Obey River carry?

About 124 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAS 85 over West Fork Obey River?

The structure is 149 ft (45.5 m) long with a longest span of 50 ft (15.2 m) and a deck 36 ft wide.

Who owns FAS 85 over West Fork Obey River?

It is owned by the State Highway Agency.