Structure 350138 · Catawba County, NC

Nc150 over Lake Norman

Carries Nc150 over Lake Norman, 1.0 Mi. E. Jct. Sr1840.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,162 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

1,162 ft end to end, longest span 157 ft: about 3.2 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.

Built1961rebuilt 2015
Length1161.7 ft354.1 m
Daily traffic16,500counted 2021
Last inspectedMarch 2023every 24 months

Location

StateNorth Carolina
CountyCatawba
Location1.0 Mi. E. Jct. Sr1840
CarriesNc150
CrossesLake Norman
Coordinates35.60489, -80.94350

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1161.7 ft (354.1 m)
Max Span156.8 ft (47.8 m)
Deck Width33.1 ft (10.1 m)
Deck Area3576.4 sq m
Main Spans10
Year Built1961 (reconstructed 2015)

Traffic

Avg Daily Traffic16,500 (2021)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000350138

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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