US Bridges

Cosby Road over Brier Creek

Good

Warren County, Georgia · 6.1 MI E of Warrenton · Structure no. 000000030150410

Built
2021
4 years old
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
40
2024 count
Owner
County
County Highway Agency

About this bridge

Cosby Road over Brier Creek is a prestressed concrete box beam or girders - multiple carrying Cosby Road over Brier Creek in Warren County, Georgia. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, roughly 1% of them trucks, projected to reach 150 by 2051. The structure is 85 ft (25.9 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCosby Road
CrossesBrier Creek
Location6.1 MI E of Warrenton
RouteCounty Highway 115
StateGeorgia
Coordinates33.40125, -82.55505
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating40.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length85 ft (25.9 m)
Longest span85 ft (25.9 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2024)
Projected traffic150 by 2051
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$11.3 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cosby Road over Brier Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is Cosby Road over Brier Creek 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 February 2025.

How much traffic does Cosby Road over Brier Creek carry?

About 40 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Cosby Road over Brier Creek?

The structure is 85 ft (25.9 m) long with a longest span of 85 ft (25.9 m) and a deck 30 ft wide.

Who owns Cosby Road over Brier Creek?

It is owned by the County Highway Agency.