US Bridges

Delk Road over Rottenwood Creek

Fair

Cobb County, Georgia · 4 MI NE of Smyrna · Structure no. 000000006701410

Built
1974
51 years old, rebuilt 1983
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
108 ft
2 main spans
Daily traffic
28,000
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Delk Road over Rottenwood Creek is a steel stringer/multi-beam or girder carrying Delk Road over Rottenwood Creek in Cobb County, Georgia. It was built in 1974 and reconstructed in 1983, so it is 51 years old, older 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 28,000 vehicles a day, roughly 2% of them trucks, projected to reach 49,035 by 2032. The structure is 108 ft (32.9 m) long and 88 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesDelk Road
CrossesRottenwood Creek
Location4 MI NE of Smyrna
RouteCity Street 9000
StateGeorgia
Coordinates33.92265, -84.47874
Functional classUrban Collector

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 protection7 GoodSome minor problems.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating35.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length108 ft (32.9 m)
Longest span54 ft (16.5 m)
Deck width88 ft (26.8 m)
Roadway width71 ft (21.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,000 (2024)
Projected traffic49,035 by 2032
Trucks2%
Lanes on structure6
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Delk Road over Rottenwood Creek built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1983.

What condition is Delk Road over Rottenwood Creek 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 August 2023.

How much traffic does Delk Road over Rottenwood Creek carry?

About 28,000 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Delk Road over Rottenwood Creek?

The structure is 108 ft (32.9 m) long with a longest span of 54 ft (16.5 m) and a deck 88 ft wide.

Who owns Delk Road over Rottenwood Creek?

It is owned by the City or Municipal Highway Agency.