US Bridges

I-75 Managed Lanes over I-75

Good

Henry County, Georgia · 4 MI W of Mcdonough · Structure no. 000000015151220

Built
2016
9 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
417 ft
3 main spans
Daily traffic
5,462
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 Managed Lanes over I-75 is a prestressed concrete stringer/multi-beam or girder carrying I-75 Managed Lanes 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 5,462 vehicles a day, projected to reach 9,200 by 2036. The structure is 417 ft (127.1 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-75 Managed Lanes
CrossesI-75
Location4 MI W of Mcdonough
RouteInterstate 75
CountyHenry County
StateGeorgia
Coordinates33.45803, -84.20721
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating81.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length417 ft (127.1 m)
Longest span142 ft (43.3 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,462 (2024)
Projected traffic9,200 by 2036
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

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$55.5 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

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

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

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

About 5,462 vehicles per day (2024 count).

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

The structure is 417 ft (127.1 m) long with a longest span of 142 ft (43.3 m) and a deck 45 ft wide.

Who owns I-75 Managed Lanes over I-75?

It is owned by the State Highway Agency.