US Bridges

Johnstonville RD over I-75

Good

Monroe County, Georgia · 6 MI N of Forsyth · Structure no. 000000020700600

Built
1966
59 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
260 ft
4 main spans
Daily traffic
1,690
2024 count
Owner
State
State Highway Agency

About this bridge

Johnstonville RD over I-75 is a steel continuous stringer/multi-beam or girder carrying Johnstonville RD over I-75 in Monroe 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 1,690 vehicles a day, roughly 1% of them trucks, projected to reach 1,770 by 2031. The structure is 260 ft (79.2 m) long and 34 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesJohnstonville RD
CrossesI-75
Location6 MI N of Forsyth
RouteCounty Highway 1431
StateGeorgia
Coordinates33.11226, -84.00287
Functional classRural Major 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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length260 ft (79.2 m)
Longest span70 ft (21.3 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,690 (2024)
Projected traffic1,770 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed16.2 mi (26 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$1.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Johnstonville RD over I-75 built?

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

What condition is Johnstonville RD over I-75 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 September 2024.

How much traffic does Johnstonville RD over I-75 carry?

About 1,690 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Johnstonville RD over I-75?

The structure is 260 ft (79.2 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns Johnstonville RD over I-75?

It is owned by the State Highway Agency.