US Bridges

I-285 over M-9011 N. Decatur Road

Good

DeKalb County, Georgia · 2.7 MI S of Clarkston · Structure no. 000000008900890

Built
1966
59 years old, rebuilt 1981
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
171 ft
3 main spans
Daily traffic
195,000
2024 count
Owner
State
State Highway Agency

About this bridge

I-285 over M-9011 N. Decatur Road is a steel stringer/multi-beam or girder carrying I-285 over M-9011 N. Decatur Road in DeKalb County, Georgia. It was built in 1966 and reconstructed in 1981, so it is 59 years old, older 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 195,000 vehicles a day, roughly 10% of them trucks, projected to reach 271,965 by 2031. The structure is 171 ft (52.1 m) long and 148 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-285
CrossesM-9011 N. Decatur Road
Location2.7 MI S of Clarkston
RouteInterstate 285
CountyDeKalb County
StateGeorgia
Coordinates33.78697, -84.24634
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.
Last inspectionJune 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 rating37.9 US tons
Inventory rating22.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length171 ft (52.1 m)
Longest span88 ft (26.8 m)
Deck width148 ft (45.1 m)
Roadway width145 ft (44.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic195,000 (2024)
Projected traffic271,965 by 2031
Trucks10%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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$2.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-285 over M-9011 N. Decatur Road built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1981.

What condition is I-285 over M-9011 N. Decatur Road 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 June 2024.

How much traffic does I-285 over M-9011 N. Decatur Road carry?

About 195,000 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is I-285 over M-9011 N. Decatur Road?

The structure is 171 ft (52.1 m) long with a longest span of 88 ft (26.8 m) and a deck 148 ft wide.

Who owns I-285 over M-9011 N. Decatur Road?

It is owned by the State Highway Agency.