US Bridges

U-Turn I-85 N to S over I-85- N Fork Ptree Crk

Fair

DeKalb County, Georgia · 2.2 MI E of Doraville · Structure no. 000000008900700

Built
1980
45 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
276 ft
3 main spans
Daily traffic
17,600
2024 count
Owner
State
State Highway Agency

About this bridge

U-Turn I-85 N to S over I-85- N Fork Ptree Crk is a steel continuous stringer/multi-beam or girder carrying U-Turn I-85 N to S over I-85- N Fork Ptree Crk in DeKalb County, Georgia. It was built in 1980, so it is 45 years old, younger 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 17,600 vehicles a day, roughly 1% of them trucks, projected to reach 26,100 by 2031. The structure is 276 ft (84.1 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesU-Turn I-85 N to S
CrossesI-85- N Fork Ptree Crk
Location2.2 MI E of Doraville
RouteInterstate 85
CountyDeKalb County
StateGeorgia
Coordinates33.90413, -84.23914
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length276 ft (84.1 m)
Longest span111 ft (33.8 m)
Deck width54 ft (16.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,600 (2024)
Projected traffic26,100 by 2031
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
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$2.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U-Turn I-85 N to S over I-85- N Fork Ptree Crk built?

It was built in 1980, making it 45 years old in 2025.

What condition is U-Turn I-85 N to S over I-85- N Fork Ptree Crk 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 2024.

How much traffic does U-Turn I-85 N to S over I-85- N Fork Ptree Crk carry?

About 17,600 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is U-Turn I-85 N to S over I-85- N Fork Ptree Crk?

The structure is 276 ft (84.1 m) long with a longest span of 111 ft (33.8 m) and a deck 54 ft wide.

Who owns U-Turn I-85 N to S over I-85- N Fork Ptree Crk?

It is owned by the State Highway Agency.