US Bridges

I40 Wbl over Crabtree Creek

Fair

Wake County, North Carolina · 2.8 M. W. Jct. SR1728 · Structure no. 000000001830118

Built
1969
56 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
228 ft
3 main spans
Daily traffic
133,000
2020 count
Owner
State
State Highway Agency

About this bridge

I40 Wbl over Crabtree Creek is a steel continuous stringer/multi-beam or girder carrying I40 Wbl over Crabtree Creek in Wake County, North Carolina. It was built in 1969, so it is 56 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 133,000 vehicles a day, roughly 16% of them trucks, projected to reach 266,000 by 2040. The structure is 228 ft (69.4 m) long and 58 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI40 Wbl
CrossesCrabtree Creek
Location2.8 M. W. Jct. SR1728
RouteInterstate 40
CountyWake County
StateNorth Carolina
Coordinates35.83956, -78.77995
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.9 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length228 ft (69.4 m)
Longest span75 ft (22.8 m)
Deck width58 ft (17.8 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic133,000 (2020)
Projected traffic266,000 by 2040
Trucks16%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I40 Wbl over Crabtree Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is I40 Wbl over Crabtree 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 September 2023.

How much traffic does I40 Wbl over Crabtree Creek carry?

About 133,000 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I40 Wbl over Crabtree Creek?

The structure is 228 ft (69.4 m) long with a longest span of 75 ft (22.8 m) and a deck 58 ft wide.

Who owns I40 Wbl over Crabtree Creek?

It is owned by the State Highway Agency.