US Bridges

I-675 Managed Lane over I-75

Good

Henry County, Georgia · 2 MI W of Stockbridge · Structure no. 000000015151230

Built
2016
9 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
164 ft
1 main span
Daily traffic
6,300
2024 count
Owner
State
State Highway Agency

About this bridge

I-675 Managed Lane over I-75 is a prestressed concrete stringer/multi-beam or girder carrying I-675 Managed Lane over I-75 in Henry 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 6,300 vehicles a day, projected to reach 7,680 by 2036. The structure is 164 ft (50 m) long and 38 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI-675 Managed Lane
CrossesI-75
Location2 MI W of Stockbridge
RouteInterstate 675
CountyHenry County
StateGeorgia
Coordinates33.54358, -84.2692
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.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length164 ft (50 m)
Longest span164 ft (50 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2024)
Projected traffic7,680 by 2036
Trucks0%
Lanes on structure1
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$22.3 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-675 Managed Lane over I-75 built?

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

What condition is I-675 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 November 2024.

How much traffic does I-675 Managed Lane over I-75 carry?

About 6,300 vehicles per day (2024 count).

How long is I-675 Managed Lane over I-75?

The structure is 164 ft (50 m) long with a longest span of 164 ft (50 m) and a deck 38 ft wide.

Who owns I-675 Managed Lane over I-75?

It is owned by the State Highway Agency.