Structure 6700830 · Cobb County, GA

I-75 (nbl) over Noonday Creek

Carries I-75 (nbl) over Noonday Creek, 2.5 Mi E Of Kennesaw.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT245 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

245 ft end to end, longest span 82 ft: about 3 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.

Built197551 years old
Length245.1 ft74.7 m
Daily traffic140,000counted 2024
Last inspectedMarch 2023every 24 months

Location

StateGeorgia
CountyCobb
Location2.5 Mi E Of Kennesaw
CarriesI-75 (nbl)
CrossesNoonday Creek
Coordinates34.02131, -84.57021

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length245.1 ft (74.7 m)
Max Span82.0 ft (25 m)
Deck Width61.4 ft (18.7 m)
Deck Area1396.9 sq m
Main Spans3
Year Built1975

Traffic

Avg Daily Traffic140,000 (2024)
Truck Traffic1%
Lanes On Bridge3

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000006700830

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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