US Bridges

I-75/I-285/RAMP-A over I-285/S.COBB/RAMPAA

Fair

Cobb County, Georgia · 6.7 Miles South East of M · Structure no. 000000006753350

Built
2017
8 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
941 ft
6 main spans
Daily traffic
6,805
2024 count
Owner
State
State Highway Agency

About this bridge

I-75/I-285/RAMP-A over I-285/S.COBB/RAMPAA is a steel stringer/multi-beam or girder carrying I-75/I-285/RAMP-A over I-285/S.COBB/RAMPAA 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,805 vehicles a day, projected to reach 860 by 2035. The structure is 941 ft (286.8 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-75/I-285/RAMP-A
CrossesI-285/S.COBB/RAMPAA
Location6.7 Miles South East of M
RouteInterstate 285
CountyCobb County
StateGeorgia
Coordinates33.88928, -84.4636
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length941 ft (286.8 m)
Longest span200 ft (61 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,805 (2024)
Projected traffic860 by 2035
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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$125.3 million (2018 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75/I-285/RAMP-A over I-285/S.COBB/RAMPAA built?

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

What condition is I-75/I-285/RAMP-A over I-285/S.COBB/RAMPAA in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does I-75/I-285/RAMP-A over I-285/S.COBB/RAMPAA carry?

About 6,805 vehicles per day (2024 count).

How long is I-75/I-285/RAMP-A over I-285/S.COBB/RAMPAA?

The structure is 941 ft (286.8 m) long with a longest span of 200 ft (61 m) and a deck 33 ft wide.

Who owns I-75/I-285/RAMP-A over I-285/S.COBB/RAMPAA?

It is owned by the State Highway Agency.