US Bridges

I-575 Managed Lane over Noonday Creek

Good

Cobb County, Georgia · 3 MI E of Kennesaw · Structure no. 000000006753230

Built
2016
9 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
170 ft
1 main span
Daily traffic
9,999
2024 count
Owner
State
State Highway Agency

About this bridge

I-575 Managed Lane over Noonday Creek is a prestressed concrete stringer/multi-beam or girder carrying I-575 Managed Lane over Noonday Creek in Cobb County, Georgia. It was built in 2016, so it is 9 years old, younger than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,999 vehicles a day, projected to reach 9,999 by 2036. The structure is 170 ft (51.8 m) long and 29 ft wide.

CarriesI-575 Managed Lane
CrossesNoonday Creek
Location3 MI E of Kennesaw
RouteInterstate 417
StateGeorgia
Coordinates34.02492, -84.55988
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating49.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length170 ft (51.8 m)
Longest span170 ft (51.8 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,999 (2024)
Projected traffic9,999 by 2036
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a toll 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$22.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-575 Managed Lane over Noonday Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is I-575 Managed Lane over Noonday Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does I-575 Managed Lane over Noonday Creek carry?

About 9,999 vehicles per day (2024 count).

How long is I-575 Managed Lane over Noonday Creek?

The structure is 170 ft (51.8 m) long with a longest span of 170 ft (51.8 m) and a deck 29 ft wide.

Who owns I-575 Managed Lane over Noonday Creek?

It is owned by the State Highway Agency.