US Bridges

Silver Hill Road over SR 10 (us 78)

Good

DeKalb County, Georgia · 1.2 MI N of Stone Mtn · Structure no. 000000008901190

Built
1963
62 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
212 ft
4 main spans
Daily traffic
2,047
2024 count
Owner
State
State Highway Agency

About this bridge

Silver Hill Road over SR 10 (us 78) is a steel continuous stringer/multi-beam or girder carrying Silver Hill Road over SR 10 (us 78) in DeKalb County, Georgia. It was built in 1963, so it is 62 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 2,047 vehicles a day, roughly 1% of them trucks, projected to reach 10,920 by 2031. The structure is 212 ft (64.6 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSilver Hill Road
CrossesSR 10 (us 78)
Location1.2 MI N of Stone Mtn
RouteCounty Highway 1048
StateGeorgia
Coordinates33.82281, -84.15909
Functional classUrban Local

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.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating40.9 US tons
Inventory rating24.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length212 ft (64.6 m)
Longest span62 ft (18.9 m)
Deck width31 ft (9.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,047 (2024)
Projected traffic10,920 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Silver Hill Road over SR 10 (us 78) built?

It was built in 1963, making it 62 years old in 2025.

What condition is Silver Hill Road over SR 10 (us 78) 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 June 2024.

How much traffic does Silver Hill Road over SR 10 (us 78) carry?

About 2,047 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Silver Hill Road over SR 10 (us 78)?

The structure is 212 ft (64.6 m) long with a longest span of 62 ft (18.9 m) and a deck 31 ft wide.

Who owns Silver Hill Road over SR 10 (us 78)?

It is owned by the State Highway Agency.