US Bridges

US21 over Glade Creek

Good

Alleghany County, North Carolina · .1 MI.S.JCT.SR1118 · Structure no. 000000000050022

Built
2016
9 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
100 ft
1 main span
Daily traffic
3,700
2021 count
Owner
State
State Highway Agency

About this bridge

US21 over Glade Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US21 over Glade Creek in Alleghany County, North Carolina. It was built in 2016, so it is 9 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 3,700 vehicles a day, roughly 8% of them trucks, projected to reach 7,400 by 2040. The structure is 100 ft (30.4 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS21
CrossesGlade Creek
Location.1 MI.S.JCT.SR1118
RouteU.S. Route 21
Coordinates36.47256, -81.06004
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating54.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length100 ft (30.4 m)
Longest span96 ft (29.2 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2021)
Projected traffic7,400 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 US21 over Glade Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is US21 over Glade 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 February 2023.

How much traffic does US21 over Glade Creek carry?

About 3,700 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is US21 over Glade Creek?

The structure is 100 ft (30.4 m) long with a longest span of 96 ft (29.2 m) and a deck 46 ft wide.

Who owns US21 over Glade Creek?

It is owned by the State Highway Agency.