US Bridges

Johnson Ferry RD over SR 400 + 2 SR 400 Ramps

Good

Fulton County, Georgia · In N Fulton · Structure no. 000000012107540

Built
1993
32 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
494 ft
5 main spans
Daily traffic
24,100
2024 count
Owner
State
State Highway Agency

About this bridge

Johnson Ferry RD over SR 400 + 2 SR 400 Ramps is a prestressed concrete stringer/multi-beam or girder carrying Johnson Ferry RD over SR 400 + 2 SR 400 Ramps in Fulton County, Georgia. It was built in 1993, so it is 32 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 24,100 vehicles a day, roughly 1% of them trucks, projected to reach 28,260 by 2032. The structure is 494 ft (150.6 m) long and 78 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesJohnson Ferry RD
CrossesSR 400 + 2 SR 400 Ramps
LocationIn N Fulton
RouteCity Street 9258
StateGeorgia
Coordinates33.90734, -84.35749
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating35.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length494 ft (150.6 m)
Longest span128 ft (39 m)
Deck width78 ft (23.9 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,100 (2024)
Projected traffic28,260 by 2032
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedNone recorded
Estimated improvement cost$6.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Johnson Ferry RD over SR 400 + 2 SR 400 Ramps built?

It was built in 1993, making it 32 years old in 2025.

What condition is Johnson Ferry RD over SR 400 + 2 SR 400 Ramps 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 June 2023.

How much traffic does Johnson Ferry RD over SR 400 + 2 SR 400 Ramps carry?

About 24,100 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Johnson Ferry RD over SR 400 + 2 SR 400 Ramps?

The structure is 494 ft (150.6 m) long with a longest span of 128 ft (39 m) and a deck 78 ft wide.

Who owns Johnson Ferry RD over SR 400 + 2 SR 400 Ramps?

It is owned by the State Highway Agency.