US Bridges

US421 Sbl over Sandy Creek

Fair

Randolph County, North Carolina · 3.8 Mi. N. Jct. NC49 · Structure no. 000000001510119

Built
1973
52 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
218 ft
4 main spans
Daily traffic
9,500
2019 count
Owner
State
State Highway Agency

About this bridge

US421 Sbl over Sandy Creek is a steel stringer/multi-beam or girder carrying US421 Sbl over Sandy Creek in Randolph County, North Carolina. It was built in 1973, so it is 52 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.

It carries about 9,500 vehicles a day, roughly 14% of them trucks, projected to reach 19,000 by 2040. The structure is 218 ft (66.4 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

No coordinates are recorded for this structure.

CarriesUS421 Sbl
CrossesSandy Creek
Location3.8 Mi. N. Jct. NC49
RouteU.S. Route 421
Functional classRural Principal Arterial - Other

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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.9 US tons
Inventory rating38.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length218 ft (66.4 m)
Longest span65 ft (19.8 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,500 (2019)
Projected traffic19,000 by 2040
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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 US421 Sbl over Sandy Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is US421 Sbl over Sandy Creek 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 August 2023.

How much traffic does US421 Sbl over Sandy Creek carry?

About 9,500 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is US421 Sbl over Sandy Creek?

The structure is 218 ft (66.4 m) long with a longest span of 65 ft (19.8 m) and a deck 42 ft wide.

Who owns US421 Sbl over Sandy Creek?

It is owned by the State Highway Agency.