Structure 6701030 · Cobb County, GA

I-285 over Ramp I-285C To I-75 Nbl

Carries I-285 over Ramp I-285C To I-75 Nbl, 6.7 Miles South East Of M.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT330 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

330 ft end to end, longest span 207 ft: about 5 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.

Built197848 years old
Length330.1 ft100.6 m
Daily traffic72,600counted 2024
Last inspectedJune 2023every 24 months

Location

StateGeorgia
CountyCobb
Location6.7 Miles South East Of M
CarriesI-285
CrossesRamp I-285C To I-75 Nbl
Coordinates33.89112, -84.45904

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length330.1 ft (100.6 m)
Max Span207.0 ft (63.1 m)
Deck Width113.8 ft (34.7 m)
Deck Area3490.8 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic72,600 (2024)
Truck Traffic1%
Lanes On Bridge5
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000006701030

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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