US Bridges

Columbia Drive over Shoal Creek

Fair

DeKalb County, Georgia · 5.8 MI SE of Decatur · Structure no. 000000008902480

Built
1977
48 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Concrete
Length
160 ft
4 main spans
Daily traffic
10,100
2024 count
Owner
County
County Highway Agency

About this bridge

Columbia Drive over Shoal Creek is a concrete tee beam carrying Columbia Drive over Shoal Creek in DeKalb County, Georgia. It was built in 1977, so it is 48 years old, older than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 10,100 vehicles a day, roughly 4% of them trucks, projected to reach 16,005 by 2031. The structure is 160 ft (48.8 m) long and 60 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesColumbia Drive
CrossesShoal Creek
Location5.8 MI SE of Decatur
RouteCounty Highway 9121
StateGeorgia
Coordinates33.69316, -84.25378
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width60 ft (18.3 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,100 (2024)
Projected traffic16,005 by 2031
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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$938,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Columbia Drive over Shoal Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Columbia Drive over Shoal Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Columbia Drive over Shoal Creek carry?

About 10,100 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Columbia Drive over Shoal Creek?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 60 ft wide.

Who owns Columbia Drive over Shoal Creek?

It is owned by the County Highway Agency.