US Bridges

I-285R to I-675 SB over SR413(I675R N to I285 W)

Good

DeKalb County, Georgia · 5.5 MI S of Decatur · Structure no. 000000008902820

Built
1984
41 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
302 ft
2 main spans
Daily traffic
60,300
2024 count
Owner
State
State Highway Agency

About this bridge

I-285R to I-675 SB over SR413(I675R N to I285 W) is a prestressed concrete continuous box beam or girders - single or spread carrying I-285R to I-675 SB over SR413(I675R N to I285 W) in DeKalb County, Georgia. It was built in 1984, so it is 41 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 60,300 vehicles a day, roughly 13% of them trucks, projected to reach 112,215 by 2031. The structure is 302 ft (92 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-285R to I-675 SB
CrossesSR413(I675R N to I285 W)
Location5.5 MI S of Decatur
RouteInterstate 285
StateGeorgia
Coordinates33.67513, -84.32762
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 inspectionMarch 2024
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

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length302 ft (92 m)
Longest span163 ft (49.7 m)
Deck width43 ft (13.2 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60,300 (2024)
Projected traffic112,215 by 2031
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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$1.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-285R to I-675 SB over SR413(I675R N to I285 W) built?

It was built in 1984, making it 41 years old in 2025.

What condition is I-285R to I-675 SB over SR413(I675R N to I285 W) 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 March 2024.

How much traffic does I-285R to I-675 SB over SR413(I675R N to I285 W) carry?

About 60,300 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is I-285R to I-675 SB over SR413(I675R N to I285 W)?

The structure is 302 ft (92 m) long with a longest span of 163 ft (49.7 m) and a deck 43 ft wide.

Who owns I-285R to I-675 SB over SR413(I675R N to I285 W)?

It is owned by the State Highway Agency.