US Bridges

SR1731 over West Prong Roaring River

Poor

Wilkes County, North Carolina · 100 FT.W.JCT.SR1730 · Structure no. 000000001930334

Built
1995
30 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
50
2022 count
Owner
State
State Highway Agency

About this bridge

SR1731 over West Prong Roaring River is a steel stringer/multi-beam or girder carrying SR1731 over West Prong Roaring River in Wilkes County, North Carolina. It was built in 1995, so it is 30 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 50 vehicles a day, roughly 6% of them trucks, projected to reach 100 by 2040. The structure is 35 ft (10.6 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSR1731
CrossesWest Prong Roaring River
Location100 FT.W.JCT.SR1730
RouteState Highway 1731
Coordinates36.34131, -81.15416
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, 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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61 US tons
Inventory rating36.9 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length35 ft (10.6 m)
Longest span34 ft (10.3 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic100 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1731 over West Prong Roaring River built?

It was built in 1995, making it 30 years old in 2025.

What condition is SR1731 over West Prong Roaring River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does SR1731 over West Prong Roaring River carry?

About 50 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR1731 over West Prong Roaring River?

The structure is 35 ft (10.6 m) long with a longest span of 34 ft (10.3 m) and a deck 20 ft wide.

Who owns SR1731 over West Prong Roaring River?

It is owned by the State Highway Agency.