US Bridges

I40W over I440 US1

Fair

Wake County, North Carolina · 0.5 Mi. E. of Jct. SR1313 · Structure no. 000000001830585

Built
1982
43 years old, rebuilt 2011
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
323 ft
5 main spans
Daily traffic
112,000
2021 count
Owner
State
State Highway Agency

About this bridge

I40W over I440 US1 is a steel stringer/multi-beam or girder carrying I40W over I440 US1 in Wake County, North Carolina. It was built in 1982 and reconstructed in 2011, so it is 43 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 112,000 vehicles a day, roughly 16% of them trucks, projected to reach 224,000 by 2040. The structure is 323 ft (98.4 m) long and 73 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI40W
CrossesI440 US1
Location0.5 Mi. E. of Jct. SR1313
RouteInterstate 40
CountyWake County
StateNorth Carolina
Coordinates35.76651, -78.73536
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.9 US tons
Inventory rating50.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length323 ft (98.4 m)
Longest span88 ft (26.8 m)
Deck width73 ft (22.2 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112,000 (2021)
Projected traffic224,000 by 2040
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I40W over I440 US1 built?

It was built in 1982, making it 43 years old in 2025. It was reconstructed in 2011.

What condition is I40W over I440 US1 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 February 2023.

How much traffic does I40W over I440 US1 carry?

About 112,000 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is I40W over I440 US1?

The structure is 323 ft (98.4 m) long with a longest span of 88 ft (26.8 m) and a deck 73 ft wide.

Who owns I40W over I440 US1?

It is owned by the State Highway Agency.