US Bridges

SR1100 over US421

Fair

Yadkin County, North Carolina · 0.25 Mi. S. Jct. SR1314 · Structure no. 000000001970210

Built
2005
20 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
186 ft
2 main spans
Daily traffic
1,200
2021 count
Owner
State
State Highway Agency

About this bridge

SR1100 over US421 is a steel continuous stringer/multi-beam or girder carrying SR1100 over US421 in Yadkin County, North Carolina. It was built in 2005, so it is 20 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 fair condition with a lowest component rating of 6 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 1,200 vehicles a day, roughly 6% of them trucks, projected to reach 2,400 by 2040. The structure is 186 ft (56.6 m) long and 58 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR1100
CrossesUS421
Location0.25 Mi. S. Jct. SR1314
RouteState Highway 1100
CountyYadkin County
StateNorth Carolina
Coordinates36.13074, -80.84229
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.9 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length186 ft (56.6 m)
Longest span64 ft (19.5 m)
Deck width58 ft (17.7 m)
Roadway width55 ft (16.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2021)
Projected traffic2,400 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 SR1100 over US421 built?

It was built in 2005, making it 20 years old in 2025.

What condition is SR1100 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 SR1100 over US421 carry?

About 1,200 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1100 over US421?

The structure is 186 ft (56.6 m) long with a longest span of 64 ft (19.5 m) and a deck 58 ft wide.

Who owns SR1100 over US421?

It is owned by the State Highway Agency.