US Bridges

I-516 (sbl) over M4031 Gwinnett St-Csx RR

Fair

Chatham County, Georgia · In City Limits Savannah · Structure no. 000000005100110

Built
1968
57 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
261 ft
3 main spans
Daily traffic
39,500
2024 count
Owner
State
State Highway Agency

About this bridge

I-516 (sbl) over M4031 Gwinnett St-Csx RR is a steel continuous stringer/multi-beam or girder carrying I-516 (sbl) over M4031 Gwinnett St-Csx RR in Chatham County, Georgia. It was built in 1968, so it is 57 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 5 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 39,500 vehicles a day, roughly 8% of them trucks, projected to reach 48,480 by 2031. The structure is 261 ft (79.6 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-516 (sbl)
CrossesM4031 Gwinnett St-Csx RR
LocationIn City Limits Savannah
RouteInterstate 516
CountyChatham County
StateGeorgia
Coordinates32.08006, -81.13193
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length261 ft (79.6 m)
Longest span111 ft (33.8 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,500 (2024)
Projected traffic48,480 by 2031
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$1.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-516 (sbl) over M4031 Gwinnett St-Csx RR built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-516 (sbl) over M4031 Gwinnett St-Csx RR 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 September 2024.

How much traffic does I-516 (sbl) over M4031 Gwinnett St-Csx RR carry?

About 39,500 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is I-516 (sbl) over M4031 Gwinnett St-Csx RR?

The structure is 261 ft (79.6 m) long with a longest span of 111 ft (33.8 m) and a deck 34 ft wide.

Who owns I-516 (sbl) over M4031 Gwinnett St-Csx RR?

It is owned by the State Highway Agency.