US Bridges

Hamby Road over Chicken Creek

FairPosted for load

Fulton County, Georgia · 6 MI N of Alpharetta · Structure no. 000000012150040

Built
1964
61 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
60 ft
2 main spans
Daily traffic
2,047
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hamby Road over Chicken Creek is a concrete slab carrying Hamby Road over Chicken Creek in Fulton County, Georgia. It was built in 1964, so it is 61 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. Its operating status is: posted for load restriction.

It carries about 2,047 vehicles a day, roughly 1% of them trucks, projected to reach 2,910 by 2031. The structure is 60 ft (18.3 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesHamby Road
CrossesChicken Creek
Location6 MI N of Alpharetta
RouteCounty Highway 12
CountyFulton County
StateGeorgia
Coordinates34.16477, -84.27264
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.9 US tons
Inventory rating21.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length60 ft (18.3 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,047 (2024)
Projected traffic2,910 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$352,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hamby Road over Chicken Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Hamby Road over Chicken 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 November 2023.

How much traffic does Hamby Road over Chicken Creek carry?

About 2,047 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Hamby Road over Chicken Creek?

The structure is 60 ft (18.3 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Hamby Road over Chicken Creek?

It is owned by the City or Municipal Highway Agency.