US Bridges

Thornton Road over Sweetwater Creek

Good

Douglas County, Georgia · 7 MI NE of Douglasville · Structure no. 000000009700060

Built
1963
62 years old, rebuilt 1991
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
250 ft
3 main spans
Daily traffic
47,300
2024 count
Owner
State
State Highway Agency

About this bridge

Thornton Road over Sweetwater Creek is a steel continuous stringer/multi-beam or girder carrying Thornton Road over Sweetwater Creek in Douglas County, Georgia. It was built in 1963 and reconstructed in 1991, so it is 62 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 47,300 vehicles a day, roughly 1% of them trucks, projected to reach 89,925 by 2032. The structure is 250 ft (76.2 m) long and 115 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesThornton Road
CrossesSweetwater Creek
Location7 MI NE of Douglasville
RouteState Highway 6
StateGeorgia
Coordinates33.79638, -84.64105
Functional classUrban Other Principal 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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating22.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length250 ft (76.2 m)
Longest span96 ft (29.3 m)
Deck width115 ft (35.1 m)
Roadway width112 ft (34.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,300 (2024)
Projected traffic89,925 by 2032
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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$3.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Thornton Road over Sweetwater Creek built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1991.

What condition is Thornton Road 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 Thornton Road over Sweetwater Creek carry?

About 47,300 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Thornton Road over Sweetwater Creek?

The structure is 250 ft (76.2 m) long with a longest span of 96 ft (29.3 m) and a deck 115 ft wide.

Who owns Thornton Road over Sweetwater Creek?

It is owned by the State Highway Agency.