US Bridges

Tribble Mill Pkwy over Tribble Mill Lake

Fair

Gwinnett County, Georgia · 3 MI NE of Grayson · Structure no. 000000013550420

Built
1994
31 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
1 main span
Daily traffic
1,930
2024 count
Owner
County
County Highway Agency

About this bridge

Tribble Mill Pkwy over Tribble Mill Lake is a steel stringer/multi-beam or girder carrying Tribble Mill Pkwy over Tribble Mill Lake in Gwinnett County, Georgia. It was built in 1994, so it is 31 years old, younger 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 1,930 vehicles a day, roughly 1% of them trucks, projected to reach 2,895 by 2032. The structure is 90 ft (27.4 m) long and 52 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTribble Mill Pkwy
CrossesTribble Mill Lake
Location3 MI NE of Grayson
RouteCounty Highway 285
StateGeorgia
Coordinates33.91033, -83.91365
Functional classUrban 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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.9 US tons
Inventory rating35.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span90 ft (27.4 m)
Deck width52 ft (15.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic1,930 (2024)
Projected traffic2,895 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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$527,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Tribble Mill Pkwy over Tribble Mill Lake built?

It was built in 1994, making it 31 years old in 2025.

What condition is Tribble Mill Pkwy over Tribble Mill Lake 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 September 2023.

How much traffic does Tribble Mill Pkwy over Tribble Mill Lake carry?

About 1,930 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Tribble Mill Pkwy over Tribble Mill Lake?

The structure is 90 ft (27.4 m) long with a longest span of 90 ft (27.4 m) and a deck 52 ft wide.

Who owns Tribble Mill Pkwy over Tribble Mill Lake?

It is owned by the County Highway Agency.