US Bridges

I40 over State Street

Fair

Wake County, North Carolina · 0.6 Mi. E. Jct. SR1004 · Structure no. 000000001830313

Built
1977
48 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
148 ft
3 main spans
Daily traffic
105,000
2020 count
Owner
State
State Highway Agency

About this bridge

I40 over State Street is a steel stringer/multi-beam or girder carrying I40 over State Street in Wake County, North Carolina. It was built in 1977, so it is 48 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 105,000 vehicles a day, roughly 16% of them trucks, projected to reach 210,000 by 2040. The structure is 148 ft (45.1 m) long and 175 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesI40
CrossesState Street
Location0.6 Mi. E. Jct. SR1004
RouteInterstate 40
Coordinates35.7541, -78.62149
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 rating89.9 US tons
Inventory rating53.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length148 ft (45.1 m)
Longest span80 ft (24.3 m)
Deck width175 ft (53.3 m)
Roadway width170 ft (51.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105,000 (2020)
Projected traffic210,000 by 2040
Trucks16%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 I40 over State Street built?

It was built in 1977, making it 48 years old in 2025.

What condition is I40 over State Street 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 August 2023.

How much traffic does I40 over State Street carry?

About 105,000 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I40 over State Street?

The structure is 148 ft (45.1 m) long with a longest span of 80 ft (24.3 m) and a deck 175 ft wide.

Who owns I40 over State Street?

It is owned by the State Highway Agency.