Structure 6701410 · Cobb County, GA

Delk Road over Rottenwood Creek

Carries Delk Road over Rottenwood Creek, 4 Mi NE Of Smyrna.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT108 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

108 ft end to end, longest span 54 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 multi-beam bridge.

Built1974rebuilt 1983
Length107.9 ft32.9 m
Daily traffic28,000counted 2024
Last inspectedAugust 2023every 24 months

Location

StateGeorgia
CountyCobb
Location4 Mi NE Of Smyrna
CarriesDelk Road
CrossesRottenwood Creek
Coordinates33.92265, -84.47874

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length107.9 ft (32.9 m)
Max Span54.1 ft (16.5 m)
Deck Width87.9 ft (26.8 m)
Deck Area881.7 sq m
Main Spans2
Year Built1974 (reconstructed 1983)

Traffic

Avg Daily Traffic28,000 (2024)
Truck Traffic2%
Lanes On Bridge6

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000006701410

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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