Structure 6751960 · Cobb County, GA

Akers Mill Road over I-75 Nbl And Ramps

Carries Akers Mill Road over I-75 Nbl And Ramps, 7 Mi SE Of Marietta.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT287 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

287 ft end to end, longest span 162 ft: about 4 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.

Built199828 years old
Length287.1 ft87.5 m
Daily traffic18,106counted 2024
Last inspectedAugust 2023every 24 months

Location

StateGeorgia
CountyCobb
Location7 Mi SE Of Marietta
CarriesAkers Mill Road
CrossesI-75 Nbl And Ramps
Coordinates33.88677, -84.45741

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length287.1 ft (87.5 m)
Max Span162.1 ft (49.4 m)
Deck Width80.4 ft (24.5 m)
Deck Area2143.8 sq m
Main Spans2
Year Built1998

Traffic

Avg Daily Traffic18,106 (2024)
Truck Traffic1%
Lanes On Bridge5
Lanes Under Bridge9

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000006751960

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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