US Bridges

SR1728 over Dungeon Creek

Good

Wilkes County, North Carolina · 1.3MI.E.JCT.NC18 · Structure no. 000000001930150

Built
2019
6 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
210
2016 count
Owner
State
State Highway Agency

About this bridge

SR1728 over Dungeon Creek is a concrete continuous culvert carrying SR1728 over Dungeon Creek in Wilkes County, North Carolina. It was built in 2019, so it is 6 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 210 vehicles a day, roughly 6% of them trucks, projected to reach 420 by 2040. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 12.4 mi (20 km).

CarriesSR1728
CrossesDungeon Creek
Location1.3MI.E.JCT.NC18
RouteState Highway 1728
Coordinates36.34905, -81.22274
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length28 ft (8.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2016)
Projected traffic420 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1728 over Dungeon Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is SR1728 over Dungeon Creek 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 May 2023.

How much traffic does SR1728 over Dungeon Creek carry?

About 210 vehicles per day (2016 count), of which roughly 6% are trucks.

How long is SR1728 over Dungeon Creek?

The structure is 28 ft (8.5 m) long with a longest span of 10 ft (3 m).

Who owns SR1728 over Dungeon Creek?

It is owned by the State Highway Agency.