US Bridges

I-75 (nbl) over Noonday Creek

Fair

Cobb County, Georgia · 2.5 MI E of Kennesaw · Structure no. 000000006700830

Built
1975
50 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
245 ft
3 main spans
Daily traffic
140,000
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 (nbl) over Noonday Creek is a steel stringer/multi-beam or girder carrying I-75 (nbl) over Noonday Creek in Cobb County, Georgia. It was built in 1975, so it is 50 years old, older than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 140,000 vehicles a day, roughly 1% of them trucks, projected to reach 193,530 by 2032. The structure is 245 ft (74.7 m) long and 61 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-75 (nbl)
CrossesNoonday Creek
Location2.5 MI E of Kennesaw
RouteInterstate 75
CountyCobb County
StateGeorgia
Coordinates34.02131, -84.57021
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length245 ft (74.7 m)
Longest span82 ft (25 m)
Deck width61 ft (18.7 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140,000 (2024)
Projected traffic193,530 by 2032
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 (nbl) over Noonday Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is I-75 (nbl) over Noonday Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does I-75 (nbl) over Noonday Creek carry?

About 140,000 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-75 (nbl) over Noonday Creek?

The structure is 245 ft (74.7 m) long with a longest span of 82 ft (25 m) and a deck 61 ft wide.

Who owns I-75 (nbl) over Noonday Creek?

It is owned by the State Highway Agency.