US Bridges

I-75 Managed Lanes over I-75 Sbl - I-75 Ramp - B

Good

Cobb County, Georgia · Near Kennesaw · Structure no. 000000006753210

Built
2016
9 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,486 ft
11 main spans
Daily traffic
9,999
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 Managed Lanes over I-75 Sbl - I-75 Ramp - B is a prestressed concrete stringer/multi-beam or girder carrying I-75 Managed Lanes over I-75 Sbl - I-75 Ramp - B 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 8,030 by 2035. The structure is 1,486 ft (452.9 m) long and 29 ft wide.

Location

Open in Google Maps
CarriesI-75 Managed Lanes
CrossesI-75 Sbl - I-75 Ramp - B
LocationNear Kennesaw
RouteInterstate 401
CountyCobb County
StateGeorgia
Coordinates34.00945, -84.56748
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.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.9 US tons
Inventory rating7.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20 + Mod
Structure length1,486 ft (452.9 m)
Longest span182 ft (55.5 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 traffic8,030 by 2035
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost$197.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 Managed Lanes over I-75 Sbl - I-75 Ramp - B built?

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

What condition is I-75 Managed Lanes over I-75 Sbl - I-75 Ramp - B 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 I-75 Sbl - I-75 Ramp - B carry?

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

How long is I-75 Managed Lanes over I-75 Sbl - I-75 Ramp - B?

The structure is 1,486 ft (452.9 m) long with a longest span of 182 ft (55.5 m) and a deck 29 ft wide.

Who owns I-75 Managed Lanes over I-75 Sbl - I-75 Ramp - B?

It is owned by the State Highway Agency.