US Bridges

I-75R from Windy H over I-75 Ramp to I-285

Good

Cobb County, Georgia · 0.87 NW I-75 & I-285 Int · Structure no. 000000006701950

Built
1985
40 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
258 ft
1 main span
Daily traffic
24,400
2024 count
Owner
State
State Highway Agency

About this bridge

I-75R from Windy H over I-75 Ramp to I-285 is a prestressed concrete box beam or girders - single or spread carrying I-75R from Windy H over I-75 Ramp to I-285 in Cobb County, Georgia. It was built in 1985, so it is 40 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 24,400 vehicles a day, roughly 1% of them trucks, projected to reach 24,900 by 2032. The structure is 258 ft (78.6 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-75R from Windy H
CrossesI-75 Ramp to I-285
Location0.87 NW I-75 & I-285 Int
RouteInterstate 75
CountyCobb County
StateGeorgia
Coordinates33.89618, -84.46744
Functional classUrban Local

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating35.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length258 ft (78.6 m)
Longest span258 ft (78.6 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,400 (2024)
Projected traffic24,900 by 2032
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75R from Windy H over I-75 Ramp to I-285 built?

It was built in 1985, making it 40 years old in 2025.

What condition is I-75R from Windy H over I-75 Ramp to I-285 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 September 2023.

How much traffic does I-75R from Windy H over I-75 Ramp to I-285 carry?

About 24,400 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-75R from Windy H over I-75 Ramp to I-285?

The structure is 258 ft (78.6 m) long with a longest span of 258 ft (78.6 m) and a deck 33 ft wide.

Who owns I-75R from Windy H over I-75 Ramp to I-285?

It is owned by the State Highway Agency.