US Bridges

Cedar Grove Road over I-675 (sr 413)

Good

DeKalb County, Georgia · 7 MI S of Decatur · Structure no. 000000008902680

Built
1984
41 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
296 ft
2 main spans
Daily traffic
2,330
2024 count
Owner
State
State Highway Agency

About this bridge

Cedar Grove Road over I-675 (sr 413) is a steel continuous stringer/multi-beam or girder carrying Cedar Grove Road over I-675 (sr 413) 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 2,330 vehicles a day, roughly 1% of them trucks, projected to reach 7,080 by 2031. The structure is 296 ft (90.2 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCedar Grove Road
CrossesI-675 (sr 413)
Location7 MI S of Decatur
RouteCounty Highway 9091
CountyDeKalb County
StateGeorgia
Coordinates33.65787, -84.32524
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
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 geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length296 ft (90.2 m)
Longest span148 ft (45.1 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,330 (2024)
Projected traffic7,080 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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$1.7 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cedar Grove Road over I-675 (sr 413) built?

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

What condition is Cedar Grove Road over I-675 (sr 413) 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 Cedar Grove Road over I-675 (sr 413) carry?

About 2,330 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Cedar Grove Road over I-675 (sr 413)?

The structure is 296 ft (90.2 m) long with a longest span of 148 ft (45.1 m) and a deck 47 ft wide.

Who owns Cedar Grove Road over I-675 (sr 413)?

It is owned by the State Highway Agency.