US Bridges

Johnson Road over I-85

Good

Fulton County, Georgia · 4 MI SW of Fairburn · Structure no. 000000012102650

Built
1966
59 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
390 ft
4 main spans
Daily traffic
1,800
2024 count
Owner
State
State Highway Agency

About this bridge

Johnson Road over I-85 is a steel continuous stringer/multi-beam or girder carrying Johnson Road over I-85 in Fulton County, Georgia. It was built in 1966, so it is 59 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 1,800 vehicles a day, roughly 1% of them trucks, projected to reach 930 by 2030. The structure is 390 ft (118.9 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesJohnson Road
CrossesI-85
Location4 MI SW of Fairburn
RouteCounty Highway 629
StateGeorgia
Coordinates33.52026, -84.62467
Functional classRural Local

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating35.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length390 ft (118.9 m)
Longest span109 ft (33.2 m)
Deck width30 ft (9.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2024)
Projected traffic930 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Johnson Road over I-85 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Johnson Road 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 October 2024.

How much traffic does Johnson Road over I-85 carry?

About 1,800 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Johnson Road over I-85?

The structure is 390 ft (118.9 m) long with a longest span of 109 ft (33.2 m) and a deck 30 ft wide.

Who owns Johnson Road over I-85?

It is owned by the State Highway Agency.