US Bridges

US 29- SR8 over Sweetwater Creek

Good

Gwinnett County, Georgia · 2.5 MI N of Lilburn · Structure no. 000000013500020

Built
1972
53 years old, rebuilt 1987
Condition
Good
inspected November 2023
Type
Tee Beam
Concrete
Length
200 ft
5 main spans
Daily traffic
28,100
2024 count
Owner
State
State Highway Agency

About this bridge

US 29- SR8 over Sweetwater Creek is a concrete tee beam carrying US 29- SR8 over Sweetwater Creek in Gwinnett County, Georgia. It was built in 1972 and reconstructed in 1987, so it is 53 years old, older 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 28,100 vehicles a day, roughly 1% of them trucks, projected to reach 40,800 by 2032. The structure is 200 ft (61 m) long and 75 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 29- SR8
CrossesSweetwater Creek
Location2.5 MI N of Lilburn
RouteU.S. Route 29
StateGeorgia
Coordinates33.91413, -84.09814
Functional classUrban Minor Arterial

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating35.9 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length200 ft (61 m)
Longest span40 ft (12.2 m)
Deck width75 ft (23 m)
Roadway width72 ft (22 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,100 (2024)
Projected traffic40,800 by 2032
Trucks1%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$2.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 29- SR8 over Sweetwater Creek built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1987.

What condition is US 29- SR8 over Sweetwater 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 November 2023.

How much traffic does US 29- SR8 over Sweetwater Creek carry?

About 28,100 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is US 29- SR8 over Sweetwater Creek?

The structure is 200 ft (61 m) long with a longest span of 40 ft (12.2 m) and a deck 75 ft wide.

Who owns US 29- SR8 over Sweetwater Creek?

It is owned by the State Highway Agency.