US Bridges

I-75 Managed Lanes over Roswell Road

Good

Cobb County, Georgia · In East Marietta · Structure no. 000000006753440

Built
2018
7 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
135 ft
1 main span
Daily traffic
224,470
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 Managed Lanes over Roswell Road is a concrete stringer/multi-beam or girder carrying I-75 Managed Lanes over Roswell Road in Cobb County, Georgia. It was built in 2018, so it is 7 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 224,470 vehicles a day, projected to reach 336,705 by 2032. The structure is 135 ft (41.1 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesI-75 Managed Lanes
CrossesRoswell Road
LocationIn East Marietta
RouteInterstate 75
StateGeorgia
Coordinates33.95087, -84.51678
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating25.9 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length135 ft (41.1 m)
Longest span135 ft (41.1 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic224,470 (2024)
Projected traffic336,705 by 2032
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$18 million (2018 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 Managed Lanes over Roswell Road built?

It was built in 2018, making it 7 years old in 2025.

What condition is I-75 Managed Lanes over Roswell Road 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-75 Managed Lanes over Roswell Road carry?

About 224,470 vehicles per day (2024 count).

How long is I-75 Managed Lanes over Roswell Road?

The structure is 135 ft (41.1 m) long with a longest span of 135 ft (41.1 m) and a deck 47 ft wide.

Who owns I-75 Managed Lanes over Roswell Road?

It is owned by the State Highway Agency.