US Bridges

US1 - SR15 (sbl) over Altamaha River O/F

Good

Toombs County, Georgia · 17 MI S of Lyons · Structure no. 000000027950350

Built
2022
3 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
300 ft
5 main spans
Daily traffic
5,460
2024 count
Owner
State
State Highway Agency

About this bridge

US1 - SR15 (sbl) over Altamaha River O/F is a prestressed concrete stringer/multi-beam or girder carrying US1 - SR15 (sbl) over Altamaha River O/F in Toombs 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 20% of them trucks, projected to reach 9,450 by 2042. The structure is 300 ft (91.4 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS1 - SR15 (sbl)
CrossesAltamaha River O/F
Location17 MI S of Lyons
RouteU.S. Route 1
CountyToombs County
StateGeorgia
Coordinates31.95284, -82.35337
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
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 rating79.9 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length300 ft (91.4 m)
Longest span60 ft (18.3 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
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$40 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US1 - SR15 (sbl) over Altamaha River O/F built?

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

What condition is US1 - SR15 (sbl) over Altamaha River O/F 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 May 2023.

How much traffic does US1 - SR15 (sbl) over Altamaha River O/F carry?

About 5,460 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is US1 - SR15 (sbl) over Altamaha River O/F?

The structure is 300 ft (91.4 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.

Who owns US1 - SR15 (sbl) over Altamaha River O/F?

It is owned by the State Highway Agency.