Structure 6753490 · Cobb County, GA

I-575 Managed Lane over I-75

Carries I-575 Managed Lane over I-75, Near Kennesaw.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT686 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

686 ft end to end, longest span 221 ft: about 1.9 football fields. 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.

Built201610 years old
Length686.0 ft209.1 m
Daily traffic1,960counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateGeorgia
CountyCobb
LocationNear Kennesaw
CarriesI-575 Managed Lane
CrossesI-75
Coordinates33.99997, -84.56200

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length686.0 ft (209.1 m)
Max Span221.1 ft (67.4 m)
Deck Width31.2 ft (9.5 m)
Deck Area1986.5 sq m
Main Spans4
Year Built2016

Traffic

Avg Daily Traffic1,960 (2024)
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000006753490

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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