US Bridges

I-59 (sbl) over Allison Creek

Good

Dade County, Georgia · 6.5 MI SW of Trenton · Structure no. 000000008300220

Built
1969
56 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
223 ft
3 main spans
Daily traffic
22,200
2024 count
Owner
State
State Highway Agency

About this bridge

I-59 (sbl) over Allison Creek is a steel continuous stringer/multi-beam or girder carrying I-59 (sbl) over Allison Creek in Dade County, Georgia. It was built in 1969, so it is 56 years old, older 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 22,200 vehicles a day, roughly 32% of them trucks, projected to reach 19,380 by 2032. The structure is 223 ft (68 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 (sbl)
CrossesAllison Creek
Location6.5 MI SW of Trenton
RouteInterstate 59
CountyDade County
StateGeorgia
Coordinates34.77803, -85.54174
Functional classRural Principal Arterial - Interstate

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length223 ft (68 m)
Longest span85 ft (25.9 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,200 (2024)
Projected traffic19,380 by 2032
Trucks32%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-59 (sbl) over Allison Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is I-59 (sbl) over Allison Creek 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 July 2023.

How much traffic does I-59 (sbl) over Allison Creek carry?

About 22,200 vehicles per day (2024 count), of which roughly 32% are trucks.

How long is I-59 (sbl) over Allison Creek?

The structure is 223 ft (68 m) long with a longest span of 85 ft (25.9 m) and a deck 45 ft wide.

Who owns I-59 (sbl) over Allison Creek?

It is owned by the State Highway Agency.