US Bridges

Fs 129 over Sandy Swamp

Good

Liberty County, Georgia · 3605 3665 · Structure no. DAPFORSTE000057

Built
2011
14 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
28 ft
2 main spans
Daily traffic
1,000
2021 count
Owner
Federal
Army

About this bridge

Fs 129 over Sandy Swamp is a wood or timber stringer/multi-beam or girder carrying Fs 129 over Sandy Swamp in Liberty County, Georgia. It was built in 2011, so it is 14 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,000 by 2046. The structure is 28 ft (8.5 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFs 129
CrossesSandy Swamp
Location3605 3665
RouteFederal Lands Road 0
StateGeorgia
Coordinates31.96442, -81.67608
Functional classRural Local

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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.8 US tons
Inventory rating67.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span14 ft (4.3 m)
Deck width23 ft (7.1 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2021)
Projected traffic1,000 by 2046
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fs 129 over Sandy Swamp built?

It was built in 2011, making it 14 years old in 2025.

What condition is Fs 129 over Sandy Swamp 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 2024.

How much traffic does Fs 129 over Sandy Swamp carry?

About 1,000 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Fs 129 over Sandy Swamp?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m) and a deck 23 ft wide.

Who owns Fs 129 over Sandy Swamp?

It is owned by the Army.