US Bridges

NC540 N&sbl over NC55 Byp

Good

Wake County, North Carolina · 1.2MI.S.INT SR1153 &NC540 · Structure no. 000000001831277

Built
2012
13 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
146 ft
2 main spans
Daily traffic
6,500
2020 count
Owner
Toll Authority
State Toll Authority

About this bridge

NC540 N&sbl over NC55 Byp is a prestressed concrete stringer/multi-beam or girder carrying NC540 N&sbl over NC55 Byp 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 6,500 vehicles a day, roughly 12% of them trucks, projected to reach 13,000 by 2040. The structure is 146 ft (44.5 m) long and 70 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesNC540 N&sbl
CrossesNC55 Byp
Location1.2MI.S.INT SR1153 &NC540
RouteState Highway 540
CountyWake County
StateNorth Carolina
Coordinates35.68804, -78.83999
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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 rating60 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length146 ft (44.5 m)
Longest span74 ft (22.5 m)
Deck width70 ft (21.2 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,500 (2020)
Projected traffic13,000 by 2040
Trucks12%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 N&sbl over NC55 Byp built?

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

What condition is NC540 N&sbl over NC55 Byp 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 N&sbl over NC55 Byp carry?

About 6,500 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is NC540 N&sbl over NC55 Byp?

The structure is 146 ft (44.5 m) long with a longest span of 74 ft (22.5 m) and a deck 70 ft wide.

Who owns NC540 N&sbl over NC55 Byp?

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