US Bridges

Napier Ave. over I-75 @ 163.60

Good

Bibb County, Georgia · In East Macon · Structure no. 000000002101760

Built
1970
55 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
190 ft
4 main spans
Daily traffic
970
2024 count
Owner
State
State Highway Agency

About this bridge

Napier Ave. over I-75 @ 163.60 is a steel stringer/multi-beam or girder carrying Napier Ave. over I-75 @ 163.60 in Bibb County, Georgia. It was built in 1970, 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 970 vehicles a day, roughly 5% of them trucks, projected to reach 2,385 by 2032. The structure is 190 ft (57.9 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNapier Ave.
CrossesI-75 @ 163.60
LocationIn East Macon
RouteCity Street 3209
CountyBibb County
StateGeorgia
Coordinates32.8343, -83.65132
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.
Superstructure7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.9 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length190 ft (57.9 m)
Longest span60 ft (18.3 m)
Deck width43 ft (13.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic970 (2024)
Projected traffic2,385 by 2032
Trucks5%
Lanes on structure2
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Napier Ave. over I-75 @ 163.60 built?

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

What condition is Napier Ave. over I-75 @ 163.60 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 Napier Ave. over I-75 @ 163.60 carry?

About 970 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Napier Ave. over I-75 @ 163.60?

The structure is 190 ft (57.9 m) long with a longest span of 60 ft (18.3 m) and a deck 43 ft wide.

Who owns Napier Ave. over I-75 @ 163.60?

It is owned by the State Highway Agency.