US Bridges

Columbus Road over I-475 (sr 408) @ 4.03N

Good

Bibb County, Georgia · In SW Macon · Structure no. 000000002100300

Built
1965
60 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
266 ft
4 main spans
Daily traffic
5,890
2024 count
Owner
State
State Highway Agency

About this bridge

Columbus Road over I-475 (sr 408) @ 4.03N is a steel continuous stringer/multi-beam or girder carrying Columbus Road over I-475 (sr 408) @ 4.03N in Bibb County, Georgia. It was built in 1965, so it is 60 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 5,890 vehicles a day, roughly 1% of them trucks, projected to reach 10,950 by 2032. The structure is 266 ft (81.1 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesColumbus Road
CrossesI-475 (sr 408) @ 4.03N
LocationIn SW Macon
RouteCity Street 3206
CountyBibb County
StateGeorgia
Coordinates32.81797, -83.72911
Functional classUrban Minor Arterial

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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating24.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length266 ft (81.1 m)
Longest span79 ft (24.1 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,890 (2024)
Projected traffic10,950 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$1.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Columbus Road over I-475 (sr 408) @ 4.03N built?

It was built in 1965, making it 60 years old in 2025.

What condition is Columbus Road over I-475 (sr 408) @ 4.03N 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 January 2024.

How much traffic does Columbus Road over I-475 (sr 408) @ 4.03N carry?

About 5,890 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Columbus Road over I-475 (sr 408) @ 4.03N?

The structure is 266 ft (81.1 m) long with a longest span of 79 ft (24.1 m) and a deck 34 ft wide.

Who owns Columbus Road over I-475 (sr 408) @ 4.03N?

It is owned by the State Highway Agency.