US Bridges

SR 320 over I-85

Good

Franklin County, Georgia · 1.3MINW of Carnesville · Structure no. 000000011950950

Built
2002
23 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
216 ft
2 main spans
Daily traffic
2,470
2024 count
Owner
State
State Highway Agency

About this bridge

SR 320 over I-85 is a prestressed concrete stringer/multi-beam or girder carrying SR 320 over I-85 in Franklin County, Georgia. It was built in 2002, so it is 23 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 2,470 vehicles a day, roughly 1% of them trucks, projected to reach 3,165 by 2031. The structure is 216 ft (65.8 m) long and 65 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSR 320
CrossesI-85
Location1.3MINW of Carnesville
RouteState Highway 320
StateGeorgia
Coordinates34.37511, -83.25795
Functional classRural 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating91.9 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length216 ft (65.8 m)
Longest span108 ft (32.9 m)
Deck width65 ft (19.8 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,470 (2024)
Projected traffic3,165 by 2031
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost$1.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 320 over I-85 built?

It was built in 2002, making it 23 years old in 2025.

What condition is SR 320 over I-85 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 September 2024.

How much traffic does SR 320 over I-85 carry?

About 2,470 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 320 over I-85?

The structure is 216 ft (65.8 m) long with a longest span of 108 ft (32.9 m) and a deck 65 ft wide.

Who owns SR 320 over I-85?

It is owned by the State Highway Agency.