Structure 6541 · Lexington County, SC

C-32-5606 over Koon Branch

Carries C-32-5606 over Koon Branch, 2mi S Of Irmo.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

30 ft end to end, longest span 15 ft. Lengths and the car 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.

Built197452 years old
Length29.9 ft9.1 m
Daily traffic150counted 2023
Last inspectedJune 2024every 12 months

Location

StateSouth Carolina
CountyLexington
Location2mi S Of Irmo
CarriesC-32-5606
CrossesKoon Branch
Coordinates34.06389, -81.18417

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length29.9 ft (9.1 m)
Max Span15.1 ft (4.6 m)
Deck Width27.6 ft (8.4 m)
Deck Area76.4 sq m
Main Spans2
Year Built1974

Traffic

Avg Daily Traffic150 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000000006541

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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