US Bridges

NC540 Nbl over US1 Ramp

Good

Wake County, North Carolina · 0.1 MI S JCT US1 · Structure no. 000000001831279

Built
2012
13 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
7,500
2020 count
Owner
Toll Authority
State Toll Authority

About this bridge

NC540 Nbl over US1 Ramp is a prestressed concrete stringer/multi-beam or girder carrying NC540 Nbl over US1 Ramp in Wake County, North Carolina. It was built in 2012, so it is 13 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 7,500 vehicles a day, roughly 12% of them trucks, projected to reach 15,000 by 2040. The structure is 71 ft (21.6 m) long and 63 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNC540 Nbl
CrossesUS1 Ramp
Location0.1 MI S JCT US1
RouteState Highway 540
CountyWake County
StateNorth Carolina
Coordinates35.69582, -78.87049
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length71 ft (21.6 m)
Longest span66 ft (20.1 m)
Deck width63 ft (19.3 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2020)
Projected traffic15,000 by 2040
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
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 NC540 Nbl over US1 Ramp built?

It was built in 2012, making it 13 years old in 2025.

What condition is NC540 Nbl over US1 Ramp 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 July 2023.

How much traffic does NC540 Nbl over US1 Ramp carry?

About 7,500 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is NC540 Nbl over US1 Ramp?

The structure is 71 ft (21.6 m) long with a longest span of 66 ft (20.1 m) and a deck 63 ft wide.

Who owns NC540 Nbl over US1 Ramp?

It is owned by the State Toll Authority and maintained by the State Highway Agency.