Structure 1005 · Anderson County, SC

US 29 Bus over C.& NW Rr & L-687

Carries US 29 Bus over C.& NW Rr & L-687, City Of Anderson.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT425 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

425 ft end to end, longest span 43 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 multi-beam bridge.

Built1940rebuilt 1955
Length425.2 ft129.6 m
Daily traffic16,600counted 2023
Last inspectedDecember 2023every 24 months

Location

StateSouth Carolina
CountyAnderson
LocationCity Of Anderson
CarriesUS 29 Bus
CrossesC.& NW Rr & L-687
Coordinates34.50458, -82.65213

Physical Characteristics

MaterialOther
DesignStringer/Multi-beam
Total Length425.2 ft (129.6 m)
Max Span42.7 ft (13 m)
Deck Width64.3 ft (19.6 m)
Deck Area2540.2 sq m
Main Spans12
Year Built1940 (reconstructed 1955)

Traffic

Avg Daily Traffic16,600 (2023)
Truck Traffic3%
Lanes On Bridge4
Lanes Under Bridge3

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000001005

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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