US Bridges

Old Alabama Road over Johns Creek Trib

Fair

Fulton County, Georgia · 5.5 MI SE of Alpharetta · Structure no. 000000012102910

Built
1956
69 years old, rebuilt 1962
Condition
Fair
inspected August 2023
Type
Channel Beam
Prestressed Concrete
Length
60 ft
2 main spans
Daily traffic
15,300
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old Alabama Road over Johns Creek Trib is a prestressed concrete channel beam carrying Old Alabama Road over Johns Creek Trib in Fulton County, Georgia. It was built in 1956 and reconstructed in 1962, so it is 69 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.

It carries about 15,300 vehicles a day, roughly 1% of them trucks, projected to reach 19,995 by 2031. The structure is 60 ft (18.3 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesOld Alabama Road
CrossesJohns Creek Trib
Location5.5 MI SE of Alpharetta
RouteCity Street 9479
CountyFulton County
StateGeorgia
Coordinates34.01539, -84.23146
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44 US tons
Inventory rating25.9 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length60 ft (18.3 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,300 (2024)
Projected traffic19,995 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost$352,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Alabama Road over Johns Creek Trib built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1962.

What condition is Old Alabama Road over Johns 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 August 2023.

How much traffic does Old Alabama Road over Johns Creek Trib carry?

About 15,300 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Old Alabama Road over Johns Creek Trib?

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

Who owns Old Alabama Road over Johns Creek Trib?

It is owned by the City or Municipal Highway Agency.