US Bridges

Stone Mtn. over East Prong Roaring River

FairPosted for load

Wilkes County, North Carolina · 2.2 MI.N.JCT.SR1737 · Structure no. 000000001930783

Built
1960
65 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
100
2018 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Stone Mtn. over East Prong Roaring River is a steel stringer/multi-beam or girder carrying Stone Mtn. over East Prong Roaring River in Wilkes County, North Carolina. It was built in 1960, so it is 65 years old, older 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 5 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 100 vehicles a day, projected to reach 200 by 2040. The structure is 31 ft (9.4 m) long and 20 ft wide. If it were closed, the detour would be 23.6 mi (38 km).

Location

Open in Google Maps
CarriesStone Mtn.
CrossesEast Prong Roaring River
Location2.2 MI.N.JCT.SR1737
RouteState Lands Road 0
CountyWilkes County
StateNorth Carolina
Coordinates36.39646, -81.06673
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2018)
Projected traffic200 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23.6 mi (38 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stone Mtn. over East Prong Roaring River built?

It was built in 1960, making it 65 years old in 2025.

What condition is Stone Mtn. over East Prong Roaring 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 January 2025.

How much traffic does Stone Mtn. over East Prong Roaring River carry?

About 100 vehicles per day (2018 count).

How long is Stone Mtn. over East Prong Roaring River?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns Stone Mtn. over East Prong Roaring River?

It is owned by the State Park, Forest, or Reservation Agency.