US Bridges

FAS 170 347531H over Clinch River & CSX RR

FairPosted for load

Anderson County, Tennessee · At Oak Ridge City Limit · Structure no. 01S24740001

Built
1958
67 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,439 ft
10 main spans
Daily traffic
15,981
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 170 347531H over Clinch River & CSX RR is a steel continuous stringer/multi-beam or girder carrying FAS 170 347531H over Clinch River & CSX RR in Anderson County, Tennessee. It was built in 1958, so it is 67 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. Its operating status is: posted for load restriction.

It carries about 15,981 vehicles a day, roughly 4% of them trucks, projected to reach 25,570 by 2042. The structure is 1,439 ft (438.7 m) long and 34 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesFAS 170 347531H
CrossesClinch River & CSX RR
LocationAt Oak Ridge City Limit
RouteState Highway 170
CountyAnderson County
StateTennessee
Coordinates36.0177, -84.16597
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.2 US tons
Inventory rating13.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans10 (+5 approach)
Design loadH 15
Structure length1,439 ft (438.7 m)
Longest span210 ft (64 m)
Deck width34 ft (10.5 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,981 (2021)
Projected traffic25,570 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed19.9 mi (32 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$7.2 million (2022 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was FAS 170 347531H over Clinch River & CSX RR built?

It was built in 1958, making it 67 years old in 2025.

What condition is FAS 170 347531H over Clinch River & CSX RR 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 December 2024.

How much traffic does FAS 170 347531H over Clinch River & CSX RR carry?

About 15,981 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAS 170 347531H over Clinch River & CSX RR?

The structure is 1,439 ft (438.7 m) long with a longest span of 210 ft (64 m) and a deck 34 ft wide.

Who owns FAS 170 347531H over Clinch River & CSX RR?

It is owned by the State Highway Agency.