US Bridges

Turner Hill Road over I-20

Good

DeKalb County, Georgia · 8 MI SE of Decatur · Structure no. 000000008903050

Built
1990
35 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
316 ft
4 main spans
Daily traffic
32,922
2024 count
Owner
State
State Highway Agency

About this bridge

Turner Hill Road over I-20 is a prestressed concrete stringer/multi-beam or girder carrying Turner Hill Road over I-20 in DeKalb County, Georgia. It was built in 1990, so it is 35 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 32,922 vehicles a day, roughly 5% of them trucks, projected to reach 13,215 by 2031. The structure is 316 ft (96.3 m) long and 91 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTurner Hill Road
CrossesI-20
Location8 MI SE of Decatur
RouteState Highway 12
StateGeorgia
Coordinates33.70028, -84.08862
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.9 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length316 ft (96.3 m)
Longest span99 ft (30.2 m)
Deck width91 ft (27.6 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,922 (2024)
Projected traffic13,215 by 2031
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$3.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Turner Hill Road over I-20 built?

It was built in 1990, making it 35 years old in 2025.

What condition is Turner Hill Road over I-20 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 April 2024.

How much traffic does Turner Hill Road over I-20 carry?

About 32,922 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Turner Hill Road over I-20?

The structure is 316 ft (96.3 m) long with a longest span of 99 ft (30.2 m) and a deck 91 ft wide.

Who owns Turner Hill Road over I-20?

It is owned by the State Highway Agency.