US Bridges

US1 over Swift Creek

Fair

Wake County, North Carolina · 0.4 Mi.S. of JCT.US64 · Structure no. 000000001830650

Built
1980
45 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
25 ft
3 main spans
Daily traffic
74,500
2022 count
Owner
State
State Highway Agency

About this bridge

US1 over Swift Creek is a concrete continuous culvert carrying US1 over Swift Creek in Wake County, North Carolina. It was built in 1980, so it is 45 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 74,500 vehicles a day, roughly 12% of them trucks, projected to reach 149,000 by 2040. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS1
CrossesSwift Creek
Location0.4 Mi.S. of JCT.US64
RouteU.S. Route 1
CountyWake County
StateNorth Carolina
Coordinates35.73403, -78.79873
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74,500 (2022)
Projected traffic149,000 by 2040
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US1 over Swift Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is US1 over Swift Creek 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 2024.

How much traffic does US1 over Swift Creek carry?

About 74,500 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US1 over Swift Creek?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).

Who owns US1 over Swift Creek?

It is owned by the State Highway Agency.