US Bridges

I-75 over M-3201 Rocky Creek Road

Good

Bibb County, Georgia · In South Macon · Structure no. 000000002100830

Built
1970
55 years old, rebuilt 1995
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
188 ft
3 main spans
Daily traffic
52,000
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 over M-3201 Rocky Creek Road is a steel stringer/multi-beam or girder carrying I-75 over M-3201 Rocky Creek Road in Bibb County, Georgia. It was built in 1970 and reconstructed in 1995, so it is 55 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 52,000 vehicles a day, roughly 1% of them trucks, projected to reach 57,975 by 2031. The structure is 188 ft (57.3 m) long and 131 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-75
CrossesM-3201 Rocky Creek Road
LocationIn South Macon
RouteInterstate 75
StateGeorgia
Coordinates32.7908, -83.66701
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length188 ft (57.3 m)
Longest span89 ft (27.1 m)
Deck width131 ft (40 m)
Roadway width129 ft (39.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,000 (2024)
Projected traffic57,975 by 2031
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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$2.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 over M-3201 Rocky Creek Road built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1995.

What condition is I-75 over M-3201 Rocky Creek Road 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 April 2024.

How much traffic does I-75 over M-3201 Rocky Creek Road carry?

About 52,000 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-75 over M-3201 Rocky Creek Road?

The structure is 188 ft (57.3 m) long with a longest span of 89 ft (27.1 m) and a deck 131 ft wide.

Who owns I-75 over M-3201 Rocky Creek Road?

It is owned by the State Highway Agency.