US Bridges

US 78 over Rocky Creek Trib

Good

Wilkes County, Georgia · 4.7 MI SE of Washington · Structure no. 000000031750520

Built
2019
6 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
350
2024 count
Owner
State
State Highway Agency

About this bridge

US 78 over Rocky Creek Trib is a concrete culvert carrying US 78 over Rocky Creek Trib in Wilkes County, Georgia. It was built in 2019, so it is 6 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 350 vehicles a day, roughly 18% of them trucks, projected to reach 6,135 by 2032. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS 78
CrossesRocky Creek Trib
Location4.7 MI SE of Washington
RouteU.S. Route 78
StateGeorgia
Coordinates33.69522, -82.67885
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2024)
Projected traffic6,135 by 2032
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$4 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 78 over Rocky Creek Trib built?

It was built in 2019, making it 6 years old in 2025.

What condition is US 78 over Rocky Creek Trib 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 US 78 over Rocky Creek Trib carry?

About 350 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is US 78 over Rocky Creek Trib?

The structure is 30 ft (9.1 m) long with a longest span of 9 ft (2.7 m).

Who owns US 78 over Rocky Creek Trib?

It is owned by the State Highway Agency.