US Bridges

Copper Lake Road over Nickajack Creek

Good

Cobb County, Georgia · 2.6 Miles South of Smyrna · Structure no. 000000006752090

Built
1999
26 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
275 ft
5 main spans
Daily traffic
9,740
2024 count
Owner
County
County Highway Agency

About this bridge

Copper Lake Road over Nickajack Creek is a prestressed concrete stringer/multi-beam or girder carrying Copper Lake Road over Nickajack Creek in Cobb County, Georgia. It was built in 1999, so it is 26 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 9,740 vehicles a day, roughly 1% of them trucks, projected to reach 14,850 by 2032. The structure is 275 ft (83.8 m) long and 43 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCopper Lake Road
CrossesNickajack Creek
Location2.6 Miles South of Smyrna
RouteCity Street 9003
StateGeorgia
Coordinates33.84281, -84.53334
Functional classUrban Collector

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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being 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 rating33 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length275 ft (83.8 m)
Longest span55 ft (16.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,740 (2024)
Projected traffic14,850 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$1.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Copper Lake Road over Nickajack Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Copper Lake Road over Nickajack 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 August 2023.

How much traffic does Copper Lake Road over Nickajack Creek carry?

About 9,740 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Copper Lake Road over Nickajack Creek?

The structure is 275 ft (83.8 m) long with a longest span of 55 ft (16.8 m) and a deck 43 ft wide.

Who owns Copper Lake Road over Nickajack Creek?

It is owned by the County Highway Agency.