US Bridges

Snapfinger Road over South River

Good

DeKalb County, Georgia · 6.4 MI SW of Lithonia · Structure no. 000000008900390

Built
1937
88 years old, rebuilt 1986
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
253 ft
5 main spans
Daily traffic
17,700
2024 count
Owner
State
State Highway Agency

About this bridge

Snapfinger Road over South River is a steel stringer/multi-beam or girder carrying Snapfinger Road over South River in DeKalb County, Georgia. It was built in 1937 and reconstructed in 1986, so it is 88 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 17,700 vehicles a day, roughly 3% of them trucks, projected to reach 24,000 by 2031. The structure is 253 ft (77.1 m) long and 71 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSnapfinger Road
CrossesSouth River
Location6.4 MI SW of Lithonia
RouteState Highway 155
StateGeorgia
Coordinates33.65327, -84.18768
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length253 ft (77.1 m)
Longest span51 ft (15.5 m)
Deck width71 ft (21.7 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,700 (2024)
Projected traffic24,000 by 2031
Trucks3%
Lanes on structure5
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$2.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Snapfinger Road over South River built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1986.

What condition is Snapfinger Road over South River 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 March 2024.

How much traffic does Snapfinger Road over South River carry?

About 17,700 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Snapfinger Road over South River?

The structure is 253 ft (77.1 m) long with a longest span of 51 ft (15.5 m) and a deck 71 ft wide.

Who owns Snapfinger Road over South River?

It is owned by the State Highway Agency.