Structure 1190559 · Mecklenburg County, NC

Sr3998 over I485

Carries Sr3998 over I485, 1.1 Mi. N. Jct. Nc51.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT305 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

305 ft end to end, longest span 93 ft: about 4 semi-trucks nose to tail. 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.

Built199036 years old
Length304.8 ft92.9 m
Daily traffic18,000counted 2022
Last inspectedJune 2024every 24 months

Location

StateNorth Carolina
CountyMecklenburg
Location1.1 Mi. N. Jct. Nc51
CarriesSr3998
CrossesI485
Coordinates35.10170, -80.88081

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length304.8 ft (92.9 m)
Max Span92.8 ft (28.3 m)
Deck Width94.5 ft (28.8 m)
Deck Area2675.5 sq m
Main Spans4
Year Built1990

Traffic

Avg Daily Traffic18,000 (2022)
Truck Traffic6%
Lanes On Bridge6
Lanes Under Bridge6

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 Number000000001190559

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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