US Bridges

US 129 over Chatt Riv (lake Lanier)

Good

Hall County, Georgia · In North Gainesville · Structure no. 000000013951120

Built
2020
5 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
855 ft
7 main spans
Daily traffic
17,400
2024 count
Owner
State
State Highway Agency

About this bridge

US 129 over Chatt Riv (lake Lanier) is a prestressed concrete stringer/multi-beam or girder carrying US 129 over Chatt Riv (lake Lanier) in Hall County, Georgia. It was built in 2020, so it is 5 years old, younger 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 17,400 vehicles a day, roughly 5% of them trucks, projected to reach 30,700 by 2040. The structure is 855 ft (260.6 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesUS 129
CrossesChatt Riv (lake Lanier)
LocationIn North Gainesville
RouteU.S. Route 129
CountyHall County
StateGeorgia
Coordinates34.34857, -83.82286
Functional classUrban Other Principal 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.9 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHL 93
Structure length855 ft (260.6 m)
Longest span125 ft (38.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,400 (2024)
Projected traffic30,700 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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$113.9 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 129 over Chatt Riv (lake Lanier) built?

It was built in 2020, making it 5 years old in 2025.

What condition is US 129 over Chatt Riv (lake Lanier) 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 June 2023.

How much traffic does US 129 over Chatt Riv (lake Lanier) carry?

About 17,400 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is US 129 over Chatt Riv (lake Lanier)?

The structure is 855 ft (260.6 m) long with a longest span of 125 ft (38.1 m) and a deck 43 ft wide.

Who owns US 129 over Chatt Riv (lake Lanier)?

It is owned by the State Highway Agency.