US Bridges

Gann Road over Nickajack Creek Trib

Good

Cobb County, Georgia · 1.5 MI S of Smyrna · Structure no. 000000006753670

Built
2020
5 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete
Length
41 ft
1 main span
Daily traffic
2,047
2024 count
Owner
County
County Highway Agency

About this bridge

Gann Road over Nickajack Creek Trib is a concrete slab carrying Gann Road over Nickajack Creek Trib in Cobb County, Georgia. It was built in 2020, so it is 5 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 2,047 vehicles a day, roughly 1% of them trucks, projected to reach 2,895 by 2032. The structure is 41 ft (12.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGann Road
CrossesNickajack Creek Trib
Location1.5 MI S of Smyrna
RouteCounty Highway 2851
StateGeorgia
Coordinates33.85748, -84.52696
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating108.9 US tons
Inventory rating64.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length41 ft (12.5 m)
Longest span41 ft (12.5 m)
Deck width43 ft (13.1 m)
Roadway width20 ft (6.1 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 closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Gann Road over Nickajack Creek Trib built?

It was built in 2020, making it 5 years old in 2025.

What condition is Gann Road over Nickajack Creek Trib 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 March 2023.

How much traffic does Gann Road over Nickajack Creek Trib carry?

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

How long is Gann Road over Nickajack Creek Trib?

The structure is 41 ft (12.5 m) long with a longest span of 41 ft (12.5 m) and a deck 43 ft wide.

Who owns Gann Road over Nickajack Creek Trib?

It is owned by the County Highway Agency.