Structure 8329 · Charleston County, SC

I-526 WB over S-97/long Point Road

Carries I-526 WB over S-97/long Point Road, Near Mt. Pleasant.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT247 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

247 ft end to end, longest span 133 ft: about 3 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
Length247.0 ft75.3 m
Daily traffic35,900counted 2023
Last inspectedJuly 2024every 24 months

Location

StateSouth Carolina
CountyCharleston
LocationNear Mt. Pleasant
CarriesI-526 WB
CrossesS-97/long Point Road
Coordinates32.83965, -79.86229

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length247.0 ft (75.3 m)
Max Span132.9 ft (40.5 m)
Deck Width54.8 ft (16.7 m)
Deck Area1257.5 sq m
Main Spans3
Year Built1990

Traffic

Avg Daily Traffic35,900 (2023)
Truck Traffic12%
Lanes On Bridge3
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000008329

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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