US Bridges

I-75 Managed Lane over Bells Ferry Road

Good

Cobb County, Georgia · North Marietta · Structure no. 000000006753470

Built
2017
8 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
158 ft
1 main span
Daily traffic
4,780
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 Managed Lane over Bells Ferry Road is a prestressed concrete stringer/multi-beam or girder carrying I-75 Managed Lane over Bells Ferry Road in Cobb County, Georgia. It was built in 2017, so it is 8 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 4,780 vehicles a day, projected to reach 328,770 by 2032. The structure is 158 ft (48.2 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-75 Managed Lane
CrossesBells Ferry Road
LocationNorth Marietta
RouteInterstate 401
CountyCobb County
StateGeorgia
Coordinates33.99064, -84.55138
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 evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating108.9 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length158 ft (48.2 m)
Longest span158 ft (48.2 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,780 (2024)
Projected traffic328,770 by 2032
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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$21 million (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 Managed Lane over Bells Ferry Road built?

It was built in 2017, making it 8 years old in 2025.

What condition is I-75 Managed Lane over Bells Ferry 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 Lane over Bells Ferry Road carry?

About 4,780 vehicles per day (2024 count).

How long is I-75 Managed Lane over Bells Ferry Road?

The structure is 158 ft (48.2 m) long with a longest span of 158 ft (48.2 m) and a deck 39 ft wide.

Who owns I-75 Managed Lane over Bells Ferry Road?

It is owned by the State Highway Agency.