US Bridges

Liberty Parkway over SR 421 (I-516)

Good

Chatham County, Georgia · 0.5 MI W of Hunter A.F.B. · Structure no. 000000005101490

Built
1969
56 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
250 ft
4 main spans
Daily traffic
4,795
2024 count
Owner
State
State Highway Agency

About this bridge

Liberty Parkway over SR 421 (I-516) is a steel stringer/multi-beam or girder carrying Liberty Parkway over SR 421 (I-516) in Chatham County, Georgia. It was built in 1969, so it is 56 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 4,795 vehicles a day, roughly 1% of them trucks, projected to reach 7,290 by 2031. The structure is 250 ft (76.2 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLiberty Parkway
CrossesSR 421 (I-516)
Location0.5 MI W of Hunter A.F.B.
RouteCity Street 4024
CountyChatham County
StateGeorgia
Coordinates32.03882, -81.14198
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 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 rating39.9 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length250 ft (76.2 m)
Longest span88 ft (26.8 m)
Deck width40 ft (12.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,795 (2024)
Projected traffic7,290 by 2031
Trucks1%
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 proposedNone recorded
Estimated improvement cost$1.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Liberty Parkway over SR 421 (I-516) built?

It was built in 1969, making it 56 years old in 2025.

What condition is Liberty Parkway over SR 421 (I-516) 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 August 2024.

How much traffic does Liberty Parkway over SR 421 (I-516) carry?

About 4,795 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Liberty Parkway over SR 421 (I-516)?

The structure is 250 ft (76.2 m) long with a longest span of 88 ft (26.8 m) and a deck 40 ft wide.

Who owns Liberty Parkway over SR 421 (I-516)?

It is owned by the State Highway Agency.