US Bridges

SR1570 over US421

Fair

Yadkin County, North Carolina · .5 MI.S.JCT.SR1605 · Structure no. 000000001970102

Built
1960
65 years old, rebuilt 2012
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
250 ft
4 main spans
Daily traffic
2,400
2021 count
Owner
State
State Highway Agency

About this bridge

SR1570 over US421 is a steel stringer/multi-beam or girder carrying SR1570 over US421 in Yadkin County, North Carolina. It was built in 1960 and reconstructed in 2012, 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.

It carries about 2,400 vehicles a day, roughly 6% of them trucks, projected to reach 4,800 by 2040. The structure is 250 ft (76.2 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesSR1570
CrossesUS421
Location.5 MI.S.JCT.SR1605
RouteState Highway 1570
CountyYadkin County
StateNorth Carolina
Coordinates36.10656, -80.51905
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.9 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length250 ft (76.2 m)
Longest span65 ft (19.8 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2021)
Projected traffic4,800 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 SR1570 over US421 built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2012.

What condition is SR1570 over US421 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 May 2023.

How much traffic does SR1570 over US421 carry?

About 2,400 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1570 over US421?

The structure is 250 ft (76.2 m) long with a longest span of 65 ft (19.8 m) and a deck 33 ft wide.

Who owns SR1570 over US421?

It is owned by the State Highway Agency.