US Bridges

I85N over I74 US311

Good

Guilford County, North Carolina · 0.7 Mi. N. Jct. NC62 · Structure no. 000000000810975

Built
2010
15 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
274 ft
2 main spans
Daily traffic
28,000
2020 count
Owner
State
State Highway Agency

About this bridge

I85N over I74 US311 is a steel continuous stringer/multi-beam or girder carrying I85N over I74 US311 in Guilford County, North Carolina. It was built in 2010, so it is 15 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 28,000 vehicles a day, roughly 16% of them trucks, projected to reach 56,000 by 2040. The structure is 274 ft (83.5 m) long and 62 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI85N
CrossesI74 US311
Location0.7 Mi. N. Jct. NC62
RouteInterstate 85
Coordinates35.92871, -79.92468
Functional classUrban Principal Arterial - Interstate

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.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating70 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length274 ft (83.5 m)
Longest span138 ft (42 m)
Deck width62 ft (18.9 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,000 (2020)
Projected traffic56,000 by 2040
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I85N over I74 US311 built?

It was built in 2010, making it 15 years old in 2025.

What condition is I85N over I74 US311 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 May 2024.

How much traffic does I85N over I74 US311 carry?

About 28,000 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I85N over I74 US311?

The structure is 274 ft (83.5 m) long with a longest span of 138 ft (42 m) and a deck 62 ft wide.

Who owns I85N over I74 US311?

It is owned by the State Highway Agency.