Structure 6753200 · Cobb County, GA

I-75 Managed Lanes over SR 5-canton Rd-ga NE Rr

Carries I-75 Managed Lanes over SR 5-canton Rd-ga NE Rr, In North 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
5,859 FT OVERALL1,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

5,859 ft end to end, longest span 142 ft: about 16 football fields, or 1.1 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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
Length5858.9 ft1785.8 m
Daily traffic9,999counted 2024
Last inspectedFebruary 2024every 24 months

Location

StateGeorgia
CountyCobb
LocationIn North Marietta
CarriesI-75 Managed Lanes
CrossesSR 5-canton Rd-ga NE Rr
Coordinates33.98136, -84.53990

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length5858.9 ft (1785.8 m)
Max Span142.1 ft (43.3 m)
Deck Width39.0 ft (11.9 m)
Deck Area21251.0 sq m
Main Spans45
Year Built2016

Traffic

Avg Daily Traffic9,999 (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 Number000000006753200

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.

Nearby Bridges