US Bridges

I-59 (nbl) over Slygo Road

Fair

Dade County, Georgia · 2.2 MI N of New England · Structure no. 000000008300340

Built
1967
58 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
129 ft
3 main spans
Daily traffic
22,600
2024 count
Owner
State
State Highway Agency

About this bridge

I-59 (nbl) over Slygo Road is a concrete continuous tee beam carrying I-59 (nbl) over Slygo Road in Dade County, Georgia. It was built in 1967, so it is 58 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 6 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 22,600 vehicles a day, roughly 1% of them trucks, projected to reach 30,315 by 2032. The structure is 129 ft (39.3 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-59 (nbl)
CrossesSlygo Road
Location2.2 MI N of New England
RouteInterstate 59
CountyDade County
StateGeorgia
Coordinates34.94248, -85.47548
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length129 ft (39.3 m)
Longest span52 ft (15.8 m)
Deck width45 ft (13.7 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,600 (2024)
Projected traffic30,315 by 2032
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost$756,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-59 (nbl) over Slygo Road built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-59 (nbl) over Slygo Road 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 July 2023.

How much traffic does I-59 (nbl) over Slygo Road carry?

About 22,600 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-59 (nbl) over Slygo Road?

The structure is 129 ft (39.3 m) long with a longest span of 52 ft (15.8 m) and a deck 45 ft wide.

Who owns I-59 (nbl) over Slygo Road?

It is owned by the State Highway Agency.