US Bridges

SR 4 (us 1) over Altamaha River

Good

Appling County, Georgia · 10 MI N of Baxley · Structure no. 000000000150570

Built
2022
3 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
4,080 ft
58 main spans
Daily traffic
5,460
2024 count
Owner
State
State Highway Agency

About this bridge

SR 4 (us 1) over Altamaha River is a prestressed concrete stringer/multi-beam or girder carrying SR 4 (us 1) over Altamaha River in Appling County, Georgia. It was built in 2022, so it is 3 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 5,460 vehicles a day, roughly 1% of them trucks, projected to reach 9,450 by 2042. The structure is 4,080 ft (1,243.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 4 (us 1)
CrossesAltamaha River
Location10 MI N of Baxley
RouteU.S. Route 1
CountyAppling County
StateGeorgia
Coordinates31.93989, -82.35477
Functional classRural Principal Arterial - Other

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating40.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans58
Design loadGreater than HL 93
Structure length4,080 ft (1,243.6 m)
Longest span140 ft (42.7 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,460 (2024)
Projected traffic9,450 by 2042
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$543.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 4 (us 1) over Altamaha River built?

It was built in 2022, making it 3 years old in 2025.

What condition is SR 4 (us 1) over Altamaha 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 January 2025.

How much traffic does SR 4 (us 1) over Altamaha River carry?

About 5,460 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 4 (us 1) over Altamaha River?

The structure is 4,080 ft (1,243.6 m) long with a longest span of 140 ft (42.7 m) and a deck 41 ft wide.

Who owns SR 4 (us 1) over Altamaha River?

It is owned by the State Highway Agency.