US Bridges

SR 8 - US 29 over Alcovy River

Fair

Gwinnett County, Georgia · 3 MI NE of Lawrenceville · Structure no. 000000013500060

Built
1929
96 years old, rebuilt 1957
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
115 ft
3 main spans
Daily traffic
10,200
2024 count
Owner
State
State Highway Agency

About this bridge

SR 8 - US 29 over Alcovy River is a concrete tee beam carrying SR 8 - US 29 over Alcovy River in Gwinnett County, Georgia. It was built in 1929 and reconstructed in 1957, so it is 96 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 10,200 vehicles a day, roughly 1% of them trucks, projected to reach 16,635 by 2032. The structure is 115 ft (35.1 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 8 - US 29
CrossesAlcovy River
Location3 MI NE of Lawrenceville
RouteU.S. Route 29
CountyGwinnett County
StateGeorgia
Coordinates33.97856, -83.93926
Functional classUrban Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.9 US tons
Inventory rating20.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length115 ft (35.1 m)
Longest span39 ft (11.9 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,200 (2024)
Projected traffic16,635 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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$674,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 8 - US 29 over Alcovy River built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1957.

What condition is SR 8 - US 29 over Alcovy River 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 August 2023.

How much traffic does SR 8 - US 29 over Alcovy River carry?

About 10,200 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 8 - US 29 over Alcovy River?

The structure is 115 ft (35.1 m) long with a longest span of 39 ft (11.9 m) and a deck 32 ft wide.

Who owns SR 8 - US 29 over Alcovy River?

It is owned by the State Highway Agency.