US Bridges

Tow String Road over Oconaluftee River

Fair

Swain County, North Carolina · 0.1 Miles to Newfound Gap · Structure no. 5460103P0000000

Built
2005
20 years old
Condition
Fair
inspected May 2023
Type
Truss - Thru
Steel
Length
89 ft
1 main span
Daily traffic
240
2009 count
Owner
Federal
National Park Service

About this bridge

Tow String Road over Oconaluftee River is a steel truss - thru carrying Tow String Road over Oconaluftee River in Swain County, North Carolina. It was built in 2005, so it is 20 years old, younger than the North Carolina average of 38.7 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 240 vehicles a day, roughly 2% of them trucks, projected to reach 270 by 2029. The structure is 89 ft (27.1 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesTow String Road
CrossesOconaluftee River
Location0.1 Miles to Newfound Gap
RouteFederal Lands Road 16
Coordinates35.54122, -83.29717
Functional classRural Local

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 inspectionMay 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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length89 ft (27.1 m)
Longest span88 ft (26.7 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2009)
Projected traffic270 by 2029
Trucks2%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$26,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tow String Road over Oconaluftee River built?

It was built in 2005, making it 20 years old in 2025.

What condition is Tow String Road over Oconaluftee 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 May 2023.

How much traffic does Tow String Road over Oconaluftee River carry?

About 240 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is Tow String Road over Oconaluftee River?

The structure is 89 ft (27.1 m) long with a longest span of 88 ft (26.7 m) and a deck 32 ft wide.

Who owns Tow String Road over Oconaluftee River?

It is owned by the National Park Service and maintained by the Bureau of Indian Affairs.