Structure 8227 · Berkeley County, SC

I-526 EB over Marsh

Carries I-526 EB over Marsh, Near Charleston.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT390 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

390 ft end to end, longest span 30 ft: about 5 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 slab bridge.

Built198937 years old
Length390.1 ft118.9 m
Daily traffic33,450counted 2023
Last inspectedOctober 2023every 24 months

Location

StateSouth Carolina
CountyBerkeley
LocationNear Charleston
CarriesI-526 EB
CrossesMarsh
Coordinates32.87695, -79.92877

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length390.1 ft (118.9 m)
Max Span29.9 ft (9.1 m)
Deck Width47.2 ft (14.4 m)
Deck Area1712.2 sq m
Main Spans13
Year Built1989

Traffic

Avg Daily Traffic33,450 (2023)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000008227

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.

Nearby Bridges