Structure 1033 · Edgefield County, SC

US 378 over Mountain Creek

Carries US 378 over Mountain Creek, 10.9 Mi NW Of Edgefield.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT125 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

125 ft end to end, longest span 25 ft. 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 tee-beam bridge.

Built1940rebuilt 1959
Length125.0 ft38.1 m
Daily traffic1,050counted 2023
Last inspectedJanuary 2024every 24 months

Location

StateSouth Carolina
CountyEdgefield
Location10.9 Mi NW Of Edgefield
CarriesUS 378
CrossesMountain Creek
Coordinates33.92861, -82.02469

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length125.0 ft (38.1 m)
Max Span24.9 ft (7.6 m)
Deck Width31.5 ft (9.6 m)
Deck Area365.8 sq m
Main Spans5
Year Built1940 (reconstructed 1959)

Traffic

Avg Daily Traffic1,050 (2023)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000001033

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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