US Bridges

SR2643 over I74 US311

Fair

Forsyth County, North Carolina · 0.4 Mi. E. Jct. SR2692 · Structure no. 000000000670392

Built
1981
44 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
336 ft
4 main spans
Daily traffic
17,000
2021 count
Owner
State
State Highway Agency

About this bridge

SR2643 over I74 US311 is a steel stringer/multi-beam or girder carrying SR2643 over I74 US311 in Forsyth County, North Carolina. It was built in 1981, so it is 44 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 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 17,000 vehicles a day, roughly 7% of them trucks, projected to reach 34,000 by 2040. The structure is 336 ft (102.4 m) long and 71 ft wide.

Location

Open in Google Maps
CarriesSR2643
CrossesI74 US311
Location0.4 Mi. E. Jct. SR2692
RouteState Highway 2643
CountyForsyth County
StateNorth Carolina
Coordinates36.04675, -80.12535
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating52.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length336 ft (102.4 m)
Longest span123 ft (37.4 m)
Deck width71 ft (21.5 m)
Roadway width68 ft (20.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,000 (2021)
Projected traffic34,000 by 2040
Trucks7%
Lanes on structure4
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 SR2643 over I74 US311 built?

It was built in 1981, making it 44 years old in 2025.

What condition is SR2643 over I74 US311 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 October 2023.

How much traffic does SR2643 over I74 US311 carry?

About 17,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR2643 over I74 US311?

The structure is 336 ft (102.4 m) long with a longest span of 123 ft (37.4 m) and a deck 71 ft wide.

Who owns SR2643 over I74 US311?

It is owned by the State Highway Agency.