US Bridges

I-285 over Rottenwood Cr-Cumb. Blvd

Good

Cobb County, Georgia · 6.7 MI SE of Marietta · Structure no. 000000006701060

Built
1978
47 years old, rebuilt 1986
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
300 ft
3 main spans
Daily traffic
42,700
2024 count
Owner
State
State Highway Agency

About this bridge

I-285 over Rottenwood Cr-Cumb. Blvd is a steel continuous stringer/multi-beam or girder carrying I-285 over Rottenwood Cr-Cumb. Blvd in Cobb County, Georgia. It was built in 1978 and reconstructed in 1986, so it is 47 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 42,700 vehicles a day, roughly 1% of them trucks, projected to reach 119,505 by 2032. The structure is 300 ft (91.4 m) long and 148 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-285
CrossesRottenwood Cr-Cumb. Blvd
Location6.7 MI SE of Marietta
RouteInterstate 285
CountyCobb County
StateGeorgia
Coordinates33.89206, -84.45674
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length300 ft (91.4 m)
Longest span116 ft (35.4 m)
Deck width148 ft (45 m)
Roadway width141 ft (43.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,700 (2024)
Projected traffic119,505 by 2032
Trucks1%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free 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$4.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-285 over Rottenwood Cr-Cumb. Blvd built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 1986.

What condition is I-285 over Rottenwood Cr-Cumb. Blvd 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 May 2023.

How much traffic does I-285 over Rottenwood Cr-Cumb. Blvd carry?

About 42,700 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-285 over Rottenwood Cr-Cumb. Blvd?

The structure is 300 ft (91.4 m) long with a longest span of 116 ft (35.4 m) and a deck 148 ft wide.

Who owns I-285 over Rottenwood Cr-Cumb. Blvd?

It is owned by the State Highway Agency.