Structure 1831045 · Wake County, NC

Nc540 9906 Flyover over Nc540n;rmp

Carries Nc540 9906 Flyover over Nc540n;rmp, 0.64 Mi.n.jct.nc540;sr147.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT690 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

690 ft end to end, longest span 199 ft: about 1.9 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.

Built200719 years old
Length690.0 ft210.3 m
Daily traffic11,625counted 2019
Last inspectedNovember 2023every 24 months

Location

StateNorth Carolina
CountyWake
Location0.64 Mi.n.jct.nc540;sr147
CarriesNc540 9906 Flyover
CrossesNc540n;rmp
Coordinates35.85625, -78.85801

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length690.0 ft (210.3 m)
Max Span198.8 ft (60.6 m)
Deck Width42.3 ft (12.9 m)
Deck Area2712.9 sq m
Main Spans4
Year Built2007

Traffic

Avg Daily Traffic11,625 (2019)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001831045

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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