US Bridges

Connemara Trace over Yellow River

Good

Gwinnett County, Georgia · 2.2 MI E of Lilburn · Structure no. 000000013551380

Built
1990
35 years old
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
160 ft
8 main spans
Daily traffic
2,047
2024 count
Owner
County
County Highway Agency

About this bridge

Connemara Trace over Yellow River is a prestressed concrete box beam or girders - multiple carrying Connemara Trace over Yellow River in Gwinnett County, Georgia. It was built in 1990, so it is 35 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 2,047 vehicles a day, roughly 1% of them trucks, projected to reach 2,895 by 2032. The structure is 160 ft (48.8 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesConnemara Trace
CrossesYellow River
Location2.2 MI E of Lilburn
RouteCounty Highway 4920
StateGeorgia
Coordinates33.89274, -84.08182
Functional classUrban Local

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.9 US tons
Inventory rating35.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans8
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,047 (2024)
Projected traffic2,895 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$938,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Connemara Trace over Yellow River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Connemara Trace over Yellow River 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 January 2024.

How much traffic does Connemara Trace over Yellow River carry?

About 2,047 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Connemara Trace over Yellow River?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Connemara Trace over Yellow River?

It is owned by the County Highway Agency.