Structure 386 · Calhoun County, SC

US 176 over Big Beaver Creek

Carries US 176 over Big Beaver Creek, 12mi NW Of ST Matthews.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT34 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

34 ft end to end. 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 tee-beam bridge.

Built193096 years old
Length33.8 ft10.3 m
Daily traffic3,000counted 2023
Last inspectedJuly 2024every 24 months

Location

StateSouth Carolina
CountyCalhoun
Location12mi NW Of ST Matthews
CarriesUS 176
CrossesBig Beaver Creek
Coordinates33.75957, -80.91422

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length33.8 ft (10.3 m)
Max Span33.8 ft (10.3 m)
Deck Width29.9 ft (9.1 m)
Deck Area93.7 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic3,000 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000000386

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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