US Bridges

Birmingham Road over Chicken Creek Trib

FairPosted for load

Fulton County, Georgia · 6 MI N of Alpharetta · Structure no. 000000012150030

Built
1961
64 years old, rebuilt 1994
Condition
Fair
inspected October 2023
Type
Channel Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
8,310
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Birmingham Road over Chicken Creek Trib is a prestressed concrete channel beam carrying Birmingham Road over Chicken Creek Trib in Fulton County, Georgia. It was built in 1961 and reconstructed in 1994, so it is 64 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 5 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 8,310 vehicles a day, roughly 1% of them trucks, projected to reach 8,640 by 2031. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesBirmingham Road
CrossesChicken Creek Trib
Location6 MI N of Alpharetta
RouteCounty Highway 4
StateGeorgia
Coordinates34.16404, -84.2893
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length30 ft (9.1 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 traffic8,310 (2024)
Projected traffic8,640 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$176,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Birmingham Road over Chicken Creek Trib built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1994.

What condition is Birmingham Road over Chicken Creek Trib 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 October 2023.

How much traffic does Birmingham Road over Chicken Creek Trib carry?

About 8,310 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Birmingham Road over Chicken Creek Trib?

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

Who owns Birmingham Road over Chicken Creek Trib?

It is owned by the City or Municipal Highway Agency.