US Bridges

Cobbs Ferry over Cobb Creek

Good

DeKalb County, Georgia · 3.5 MI SE of Decatur · Structure no. 000000008951220

Built
1975
50 years old
Condition
Good
inspected May 2024
Type
Culvert
Steel
Length
32 ft
2 main spans
Daily traffic
2,202
2024 count
Owner
County
County Highway Agency

About this bridge

Cobbs Ferry over Cobb Creek is a steel culvert carrying Cobbs Ferry over Cobb Creek in DeKalb County, Georgia. It was built in 1975, so it is 50 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 2,202 vehicles a day, roughly 1% of them trucks, projected to reach 3,303 by 2031. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCobbs Ferry
CrossesCobb Creek
Location3.5 MI SE of Decatur
RouteCity Street 4585
StateGeorgia
Coordinates33.74412, -84.24942
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating107.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 15
Structure length32 ft (9.8 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,202 (2024)
Projected traffic3,303 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$188,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cobbs Ferry over Cobb Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Cobbs Ferry over Cobb Creek 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 2024.

How much traffic does Cobbs Ferry over Cobb Creek carry?

About 2,202 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Cobbs Ferry over Cobb Creek?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.6 m).

Who owns Cobbs Ferry over Cobb Creek?

It is owned by the County Highway Agency.