Structure 5150420 · Chatham County, GA

Island Expressway over SR 26

Carries Island Expressway over SR 26, 1 Mi E Of Richardson Crk.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT454 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

454 ft end to end, longest span 236 ft: about 6 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 box-beam bridge.

Built199729 years old
Length454.1 ft138.4 m
Daily traffic21,400counted 2024
Last inspectedMay 2024every 24 months

Location

StateGeorgia
CountyChatham
Location1 Mi E Of Richardson Crk
CarriesIsland Expressway
CrossesSR 26
Coordinates32.04393, -81.00400

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Single/Spread
Total Length454.1 ft (138.4 m)
Max Span235.9 ft (71.9 m)
Deck Width46.9 ft (14.3 m)
Deck Area1979.1 sq m
Main Spans2
Year Built1997

Traffic

Avg Daily Traffic21,400 (2024)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000005150420

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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