US Bridges

Cooper Lake Road over Nor Southern Railroad

Good

Cobb County, Georgia · 2.8 MI S of Smyrna · Structure no. 000000006752100

Built
1999
26 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
176 ft
2 main spans
Daily traffic
7,906
2024 count
Owner
County
County Highway Agency

About this bridge

Cooper Lake Road over Nor Southern Railroad is a prestressed concrete stringer/multi-beam or girder carrying Cooper Lake Road over Nor Southern Railroad 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 7,906 vehicles a day, roughly 1% of them trucks, projected to reach 8,685 by 2032. The structure is 176 ft (53.6 m) long and 43 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCooper Lake Road
CrossesNor Southern Railroad
Location2.8 MI S of Smyrna
RouteCity Street 9003
StateGeorgia
Coordinates33.83989, -84.53558
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating40.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length176 ft (53.6 m)
Longest span116 ft (35.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,906 (2024)
Projected traffic8,685 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cooper Lake Road over Nor Southern Railroad built?

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

What condition is Cooper Lake Road over Nor Southern Railroad 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 Cooper Lake Road over Nor Southern Railroad carry?

About 7,906 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Cooper Lake Road over Nor Southern Railroad?

The structure is 176 ft (53.6 m) long with a longest span of 116 ft (35.4 m) and a deck 43 ft wide.

Who owns Cooper Lake Road over Nor Southern Railroad?

It is owned by the County Highway Agency.