US Bridges

US 17 SR 25 Ocean over Back River Trib

Good

Glynn County, Georgia · 1 MI N of Brunswick · Structure no. 000000012700730

Built
1989
36 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
16,000
2024 count
Owner
State
State Highway Agency

About this bridge

US 17 SR 25 Ocean over Back River Trib is a prestressed concrete stringer/multi-beam or girder carrying US 17 SR 25 Ocean over Back River Trib in Glynn County, Georgia. It was built in 1989, so it is 36 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 16,000 vehicles a day, roughly 1% of them trucks, projected to reach 23,070 by 2031. The structure is 46 ft (14 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 17 SR 25 Ocean
CrossesBack River Trib
Location1 MI N of Brunswick
RouteU.S. Route 17
StateGeorgia
Coordinates31.19586, -81.46849
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 rating88 US tons
Inventory rating46 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length46 ft (14 m)
Longest span46 ft (14 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2024)
Projected traffic23,070 by 2031
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$270,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 17 SR 25 Ocean over Back River Trib built?

It was built in 1989, making it 36 years old in 2025.

What condition is US 17 SR 25 Ocean over Back River Trib 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 US 17 SR 25 Ocean over Back River Trib carry?

About 16,000 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is US 17 SR 25 Ocean over Back River Trib?

The structure is 46 ft (14 m) long with a longest span of 46 ft (14 m) and a deck 41 ft wide.

Who owns US 17 SR 25 Ocean over Back River Trib?

It is owned by the State Highway Agency.