US Bridges

I-575 Managed Lane over I-75

Good

Cobb County, Georgia · Near Kennesaw · Structure no. 000000006753490

Built
2016
9 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
686 ft
4 main spans
Daily traffic
1,960
2024 count
Owner
State
State Highway Agency

About this bridge

I-575 Managed Lane over I-75 is a steel stringer/multi-beam or girder carrying I-575 Managed Lane over I-75 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 1,960 vehicles a day, projected to reach 7,590 by 2035. The structure is 686 ft (209.1 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI-575 Managed Lane
CrossesI-75
LocationNear Kennesaw
RouteInterstate 575
CountyCobb County
StateGeorgia
Coordinates33.99997, -84.562
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating35.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length686 ft (209.1 m)
Longest span221 ft (67.4 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,960 (2024)
Projected traffic7,590 by 2035
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
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 proposedNone recorded
Estimated improvement cost$91.4 million (2018 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-575 Managed Lane over I-75 built?

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

What condition is I-575 Managed Lane over I-75 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 I-75 carry?

About 1,960 vehicles per day (2024 count).

How long is I-575 Managed Lane over I-75?

The structure is 686 ft (209.1 m) long with a longest span of 221 ft (67.4 m) and a deck 31 ft wide.

Who owns I-575 Managed Lane over I-75?

It is owned by the State Highway Agency.