US Bridges

SR1559 over Watauga River

Good

Watauga County, North Carolina · 0.1 Mi.S.Jct.Nc 105 · Structure no. 000000001890006

Built
2014
11 years old
Condition
Good
inspected September 2021
Type
Slab
Prestressed Concrete
Length
128 ft
3 main spans
Daily traffic
930
2016 count
Owner
State
State Highway Agency

About this bridge

SR1559 over Watauga River is a prestressed concrete slab carrying SR1559 over Watauga River in Watauga County, North Carolina. It was built in 2014, so it is 11 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 930 vehicles a day, roughly 6% of them trucks, projected to reach 1,860 by 2040. The structure is 128 ft (39 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR1559
CrossesWatauga River
Location0.1 Mi.S.Jct.Nc 105
RouteState Highway 1559
Coordinates36.15664, -81.76961
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.9 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length128 ft (39 m)
Longest span44 ft (13.4 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic930 (2016)
Projected traffic1,860 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1559 over Watauga River built?

It was built in 2014, making it 11 years old in 2025.

What condition is SR1559 over Watauga River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2021.

How much traffic does SR1559 over Watauga River carry?

About 930 vehicles per day (2016 count), of which roughly 6% are trucks.

How long is SR1559 over Watauga River?

The structure is 128 ft (39 m) long with a longest span of 44 ft (13.4 m) and a deck 30 ft wide.

Who owns SR1559 over Watauga River?

It is owned by the State Highway Agency.