US Bridges

Allgood Road over Sope Creek

Good

Cobb County, Georgia · 2 MI NE of Marietta · Structure no. 000000006701630

Built
1955
70 years old, rebuilt 1997
Condition
Good
inspected May 2023
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
14,200
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Allgood Road over Sope Creek is a steel culvert carrying Allgood Road over Sope Creek in Cobb County, Georgia. It was built in 1955 and reconstructed in 1997, so it is 70 years old, older 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 14,200 vehicles a day, roughly 1% of them trucks, projected to reach 19,380 by 2032. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesAllgood Road
CrossesSope Creek
Location2 MI NE of Marietta
RouteCity Street 9032
StateGeorgia
Coordinates33.97414, -84.52514
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.9 US tons
Inventory rating31 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 15
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,200 (2024)
Projected traffic19,380 by 2032
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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$190,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Allgood Road over Sope Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1997.

What condition is Allgood Road over Sope 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 May 2023.

How much traffic does Allgood Road over Sope Creek carry?

About 14,200 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Allgood Road over Sope Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns Allgood Road over Sope Creek?

It is owned by the City or Municipal Highway Agency.