US Bridges

SR 51 over I-85

Good

Franklin County, Georgia · 5MI SW of Carnesville · Structure no. 000000011950960

Built
2002
23 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
254 ft
2 main spans
Daily traffic
5,000
2024 count
Owner
State
State Highway Agency

About this bridge

SR 51 over I-85 is a prestressed concrete stringer/multi-beam or girder carrying SR 51 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 5,000 vehicles a day, roughly 1% of them trucks, projected to reach 4,020 by 2031. The structure is 254 ft (77.4 m) long and 65 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesSR 51
CrossesI-85
Location5MI SW of Carnesville
RouteState Highway 51
StateGeorgia
Coordinates34.34648, -83.31841
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 rating72 US tons
Inventory rating31 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length254 ft (77.4 m)
Longest span127 ft (38.7 m)
Deck width65 ft (19.8 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2024)
Projected traffic4,020 by 2031
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 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$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 51 over I-85 built?

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

What condition is SR 51 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 51 over I-85 carry?

About 5,000 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 51 over I-85?

The structure is 254 ft (77.4 m) long with a longest span of 127 ft (38.7 m) and a deck 65 ft wide.

Who owns SR 51 over I-85?

It is owned by the State Highway Agency.