US Bridges

US 78 Wbl over M-9218 Valley Brook RD

Good

DeKalb County, Georgia · 2.1 MI W of Clarkston · Structure no. 000000008901080

Built
1968
57 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
196 ft
3 main spans
Daily traffic
88,200
2024 count
Owner
State
State Highway Agency

About this bridge

US 78 Wbl over M-9218 Valley Brook RD is a steel stringer/multi-beam or girder carrying US 78 Wbl over M-9218 Valley Brook RD in DeKalb County, Georgia. It was built in 1968, so it is 57 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 88,200 vehicles a day, roughly 1% of them trucks, projected to reach 106,830 by 2031. The structure is 196 ft (59.7 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 78 Wbl
CrossesM-9218 Valley Brook RD
Location2.1 MI W of Clarkston
RouteU.S. Route 78
StateGeorgia
Coordinates33.80945, -84.27042
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.9 US tons
Inventory rating23.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length196 ft (59.7 m)
Longest span115 ft (35.1 m)
Deck width45 ft (13.7 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88,200 (2024)
Projected traffic106,830 by 2031
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 78 Wbl over M-9218 Valley Brook RD built?

It was built in 1968, making it 57 years old in 2025.

What condition is US 78 Wbl over M-9218 Valley Brook RD 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 2024.

How much traffic does US 78 Wbl over M-9218 Valley Brook RD carry?

About 88,200 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is US 78 Wbl over M-9218 Valley Brook RD?

The structure is 196 ft (59.7 m) long with a longest span of 115 ft (35.1 m) and a deck 45 ft wide.

Who owns US 78 Wbl over M-9218 Valley Brook RD?

It is owned by the State Highway Agency.