US Bridges

NC55 over US1

Good

Wake County, North Carolina · 1.13 Mi. W. Jct. SR1010 · Structure no. 000000001830071

Built
2004
21 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
205 ft
4 main spans
Daily traffic
23,500
2021 count
Owner
State
State Highway Agency

About this bridge

NC55 over US1 is a prestressed concrete continuous stringer/multi-beam or girder carrying NC55 over US1 in Wake County, North Carolina. It was built in 2004, so it is 21 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 23,500 vehicles a day, roughly 12% of them trucks, projected to reach 47,000 by 2040. The structure is 205 ft (62.4 m) long and 91 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesNC55
CrossesUS1
Location1.13 Mi. W. Jct. SR1010
RouteState Highway 55
Coordinates35.71434, -78.84017
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating56 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length205 ft (62.4 m)
Longest span101 ft (30.7 m)
Deck width91 ft (27.8 m)
Roadway width79 ft (24 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,500 (2021)
Projected traffic47,000 by 2040
Trucks12%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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 NC55 over US1 built?

It was built in 2004, making it 21 years old in 2025.

What condition is NC55 over US1 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 September 2023.

How much traffic does NC55 over US1 carry?

About 23,500 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is NC55 over US1?

The structure is 205 ft (62.4 m) long with a longest span of 101 ft (30.7 m) and a deck 91 ft wide.

Who owns NC55 over US1?

It is owned by the State Highway Agency.