Structure 1831005 · Wake County, NC

I540 Fly Over over I540 Ramp Cb

Carries I540 Fly Over over I540 Ramp Cb, @ Jct I540 & Us1.

Overall conditionGood

Set by its lowest-rated component: Superstructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT895 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

895 ft end to end, longest span 188 ft: about 2.5 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built200224 years old
Length894.7 ft272.7 m
Daily traffic8,100counted 2022
Last inspectedJune 2024every 24 months

Location

StateNorth Carolina
CountyWake
Location@ Jct I540 & Us1
CarriesI540 Fly Over
CrossesI540 Ramp Cb
Coordinates35.87475, -78.57467

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length894.7 ft (272.7 m)
Max Span188.0 ft (57.3 m)
Deck Width44.3 ft (13.5 m)
Deck Area3681.4 sq m
Main Spans5
Year Built2002

Traffic

Avg Daily Traffic8,100 (2022)
Truck Traffic16%
Lanes On Bridge2
Lanes Under Bridge11

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001831005

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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