US Bridges

Webb Bridge Road over Big Creek

Good

Fulton County, Georgia · 2.5 MI E of Alpharetta · Structure no. 000000012103000

Built
1985
40 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
90 ft
3 main spans
Daily traffic
13,100
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Webb Bridge Road over Big Creek is a prestressed concrete box beam or girders - multiple carrying Webb Bridge Road over Big Creek in Fulton County, Georgia. It was built in 1985, so it is 40 years old, younger 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 13,100 vehicles a day, roughly 1% of them trucks, projected to reach 22,065 by 2031. The structure is 90 ft (27.4 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesWebb Bridge Road
CrossesBig Creek
Location2.5 MI E of Alpharetta
RouteCounty Highway 9411
StateGeorgia
Coordinates34.0785, -84.25088
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating22.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,100 (2024)
Projected traffic22,065 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$527,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Webb Bridge Road over Big Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Webb Bridge Road over Big 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 October 2023.

How much traffic does Webb Bridge Road over Big Creek carry?

About 13,100 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Webb Bridge Road over Big Creek?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns Webb Bridge Road over Big Creek?

It is owned by the City or Municipal Highway Agency.