US Bridges

US 1 (nbl)/ SR 4 over Lake Deborah Trib.

Fair

Charlton County, Georgia · 1 MI S of Folkston · Structure no. 000000004900030

Built
1955
70 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
99 ft
3 main spans
Daily traffic
8,900
2024 count
Owner
State
State Highway Agency

About this bridge

US 1 (nbl)/ SR 4 over Lake Deborah Trib. is a concrete tee beam carrying US 1 (nbl)/ SR 4 over Lake Deborah Trib. in Charlton County, Georgia. It was built in 1955, so it is 70 years old, older than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,900 vehicles a day, roughly 1% of them trucks, projected to reach 12,480 by 2032. The structure is 99 ft (30.2 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS 1 (nbl)/ SR 4
CrossesLake Deborah Trib.
Location1 MI S of Folkston
RouteU.S. Route 1
CountyCharlton County
StateGeorgia
Coordinates30.80347, -81.99182
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.9 US tons
Inventory rating23.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length99 ft (30.2 m)
Longest span33 ft (10.1 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,900 (2024)
Projected traffic12,480 by 2032
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$580,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 1 (nbl)/ SR 4 over Lake Deborah Trib. built?

It was built in 1955, making it 70 years old in 2025.

What condition is US 1 (nbl)/ SR 4 over Lake Deborah Trib. in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does US 1 (nbl)/ SR 4 over Lake Deborah Trib. carry?

About 8,900 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is US 1 (nbl)/ SR 4 over Lake Deborah Trib.?

The structure is 99 ft (30.2 m) long with a longest span of 33 ft (10.1 m) and a deck 34 ft wide.

Who owns US 1 (nbl)/ SR 4 over Lake Deborah Trib.?

It is owned by the State Highway Agency.