US Bridges

US401S over US1N

Fair

Wake County, North Carolina · 2.1 Mi.S JCT SR2215 · Structure no. 000000001830139

Built
1961
64 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
158 ft
3 main spans
Daily traffic
38,000
2018 count
Owner
State
State Highway Agency

About this bridge

US401S over US1N is a steel stringer/multi-beam or girder carrying US401S over US1N in Wake County, North Carolina. It was built in 1961, so it is 64 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 5 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 38,000 vehicles a day, roughly 12% of them trucks, projected to reach 76,000 by 2040. The structure is 158 ft (48.1 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS401S
CrossesUS1N
Location2.1 Mi.S JCT SR2215
RouteU.S. Route 401
CountyWake County
StateNorth Carolina
Coordinates35.8143, -78.60729
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79.9 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length158 ft (48.1 m)
Longest span52 ft (15.8 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,000 (2018)
Projected traffic76,000 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US401S over US1N built?

It was built in 1961, making it 64 years old in 2025.

What condition is US401S over US1N 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 December 2024.

How much traffic does US401S over US1N carry?

About 38,000 vehicles per day (2018 count), of which roughly 12% are trucks.

How long is US401S over US1N?

The structure is 158 ft (48.1 m) long with a longest span of 52 ft (15.8 m) and a deck 33 ft wide.

Who owns US401S over US1N?

It is owned by the State Highway Agency.