US Bridges

Holcomb Boulevard over NC24

Fair

Onslow County, North Carolina · 1.6 Mi. N. Jct. SR1406 · Structure no. 000000001330020

Built
1974
51 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
300 ft
2 main spans
Daily traffic
14,500
2018 count
Owner
State
State Highway Agency

About this bridge

Holcomb Boulevard over NC24 is a steel continuous stringer/multi-beam or girder carrying Holcomb Boulevard over NC24 in Onslow County, North Carolina. It was built in 1974, so it is 51 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 14,500 vehicles a day, roughly 7% of them trucks, projected to reach 29,000 by 2040. The structure is 300 ft (91.4 m) long and 62 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesHolcomb Boulevard
CrossesNC24
Location1.6 Mi. N. Jct. SR1406
RouteCity Street 0
CountyOnslow County
StateNorth Carolina
Coordinates34.72758, -77.34389
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 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 rating63.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length300 ft (91.4 m)
Longest span119 ft (36.2 m)
Deck width62 ft (18.8 m)
Roadway width60 ft (18.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,500 (2018)
Projected traffic29,000 by 2040
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
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 Holcomb Boulevard over NC24 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Holcomb Boulevard over NC24 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 November 2023.

How much traffic does Holcomb Boulevard over NC24 carry?

About 14,500 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Holcomb Boulevard over NC24?

The structure is 300 ft (91.4 m) long with a longest span of 119 ft (36.2 m) and a deck 62 ft wide.

Who owns Holcomb Boulevard over NC24?

It is owned by the State Highway Agency.