US Bridges

SR 120 over Willeo Creek

Good

Cobb County, Georgia · At Fulton Co. Line · Structure no. 000000006700420

Built
1937
88 years old, rebuilt 1990
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
3 main spans
Daily traffic
22,800
2024 count
Owner
State
State Highway Agency

About this bridge

SR 120 over Willeo Creek is a steel stringer/multi-beam or girder carrying SR 120 over Willeo Creek in Cobb County, Georgia. It was built in 1937 and reconstructed in 1990, so it is 88 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 22,800 vehicles a day, roughly 1% of them trucks, projected to reach 37,485 by 2032. The structure is 100 ft (30.5 m) long and 92 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR 120
CrossesWilleo Creek
LocationAt Fulton Co. Line
RouteState Highway 120
StateGeorgia
Coordinates34.00273, -84.39426
Functional classUrban Other Principal Arterial

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 protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length100 ft (30.5 m)
Longest span40 ft (12.2 m)
Deck width92 ft (27.9 m)
Roadway width73 ft (22.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,800 (2024)
Projected traffic37,485 by 2032
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 120 over Willeo Creek built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1990.

What condition is SR 120 over Willeo 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 March 2023.

How much traffic does SR 120 over Willeo Creek carry?

About 22,800 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 120 over Willeo Creek?

The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 92 ft wide.

Who owns SR 120 over Willeo Creek?

It is owned by the State Highway Agency.