US Bridges

FAP 37 over Watauga River

Fair

Carter County, Tennessee · .9 M SW of Portrayon Ck · Structure no. 10SR0910009

Built
1965
60 years old, rebuilt 1990
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
404 ft
5 main spans
Daily traffic
18,644
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 37 over Watauga River is a steel continuous stringer/multi-beam or girder carrying FAP 37 over Watauga River in Carter County, Tennessee. It was built in 1965 and reconstructed in 1990, so it is 60 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 18,644 vehicles a day, roughly 9% of them trucks, projected to reach 27,059 by 2041. The structure is 404 ft (123 m) long and 102 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesFAP 37
CrossesWatauga River
Location.9 M SW of Portrayon Ck
RouteState Highway 37
Coordinates36.35423, -82.20692
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating38.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length404 ft (123 m)
Longest span100 ft (30.5 m)
Deck width102 ft (31.1 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,644 (2021)
Projected traffic27,059 by 2041
Trucks9%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 km)
TollOn a free road
National Highway SystemYes

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 FAP 37 over Watauga River built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1990.

What condition is FAP 37 over Watauga 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 June 2023.

How much traffic does FAP 37 over Watauga River carry?

About 18,644 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAP 37 over Watauga River?

The structure is 404 ft (123 m) long with a longest span of 100 ft (30.5 m) and a deck 102 ft wide.

Who owns FAP 37 over Watauga River?

It is owned by the State Highway Agency.