US Bridges

FAS 347 over Holston River

Fair

Hawkins County, Tennessee · .97 M E of Tunnel Hill RD · Structure no. 37S23670003

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,562 ft
3 main spans
Daily traffic
1,147
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 347 over Holston River is a steel continuous stringer/multi-beam or girder carrying FAS 347 over Holston River in Hawkins County, Tennessee. It was built in 1972, so it is 53 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 1,147 vehicles a day, roughly 5% of them trucks, projected to reach 1,835 by 2042. The structure is 1,562 ft (476.1 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesFAS 347
CrossesHolston River
Location.97 M E of Tunnel Hill RD
RouteState Highway 347
CountyHawkins County
StateTennessee
Coordinates36.41872, -82.9373
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.5 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+13 approach)
Design loadHS 20
Structure length1,562 ft (476.1 m)
Longest span151 ft (45.9 m)
Deck width31 ft (9.3 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,147 (2021)
Projected traffic1,835 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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$3.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 347 over Holston River built?

It was built in 1972, making it 53 years old in 2025.

What condition is FAS 347 over Holston 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 September 2024.

How much traffic does FAS 347 over Holston River carry?

About 1,147 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 347 over Holston River?

The structure is 1,562 ft (476.1 m) long with a longest span of 151 ft (45.9 m) and a deck 31 ft wide.

Who owns FAS 347 over Holston River?

It is owned by the State Highway Agency.