US Bridges

Humpback Road over Little Satilla River

PoorClosed to traffic

Brantley County, Georgia · 6 MI N of Nahunta · Structure no. 000000002550160

Built
1970
55 years old
Condition
Poor
inspected August 2023
Type
Slab
Concrete
Length
132 ft
11 main spans
Daily traffic
60
2024 count
Owner
County
County Highway Agency

About this bridge

Humpback Road over Little Satilla River is a concrete slab carrying Humpback Road over Little Satilla River in Brantley County, Georgia. It was built in 1970, so it is 55 years old, older than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 60 vehicles a day, roughly 1% of them trucks, projected to reach 15 by 2032. The structure is 132 ft (40.2 m) long and 12 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesHumpback Road
CrossesLittle Satilla River
Location6 MI N of Nahunta
RouteCounty Highway 122
StateGeorgia
Coordinates31.31354, -81.98207
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans11
Design loadH 10
Structure length132 ft (40.2 m)
Longest span12 ft (3.7 m)
Deck width12 ft (3.8 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2024)
Projected traffic15 by 2032
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$563,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Humpback Road over Little Satilla River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Humpback Road over Little Satilla River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Humpback Road over Little Satilla River carry?

About 60 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Humpback Road over Little Satilla River?

The structure is 132 ft (40.2 m) long with a longest span of 12 ft (3.7 m) and a deck 12 ft wide.

Who owns Humpback Road over Little Satilla River?

It is owned by the County Highway Agency.