US Bridges

Lanier Islands RD over Lake Lanier

Fair

Hall County, Georgia · 5 MI W of Flowery Branch · Structure no. 000000013950790

Built
1969
56 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
558 ft
9 main spans
Daily traffic
490
2024 count
Owner
State
Other State Agency

About this bridge

Lanier Islands RD over Lake Lanier is a prestressed concrete stringer/multi-beam or girder carrying Lanier Islands RD over Lake Lanier in Hall 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 490 vehicles a day, roughly 1% of them trucks, projected to reach 735 by 2032. The structure is 558 ft (170.1 m) long and 38 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLanier Islands RD
CrossesLake Lanier
Location5 MI W of Flowery Branch
RouteState Lands Road 1421
StateGeorgia
Coordinates34.17422, -84.01561
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 alignment6: Equal to present minimum criteria
Operating rating56 US tons
Inventory rating34.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20 + Mod
Structure length558 ft (170.1 m)
Longest span62 ft (18.9 m)
Deck width38 ft (11.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic490 (2024)
Projected traffic735 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$3.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Lanier Islands RD over Lake Lanier built?

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

What condition is Lanier Islands RD over Lake Lanier in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Lanier Islands RD over Lake Lanier carry?

About 490 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Lanier Islands RD over Lake Lanier?

The structure is 558 ft (170.1 m) long with a longest span of 62 ft (18.9 m) and a deck 38 ft wide.

Who owns Lanier Islands RD over Lake Lanier?

It is owned by the Other State Agency.