US Bridges

Key Road over Entrenchment Creek

GoodPosted for load

DeKalb County, Georgia · 5.3 MI SE of Decatur · Structure no. 000000008901510

Built
1958
67 years old, rebuilt 2018
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
118 ft
3 main spans
Daily traffic
1,600
2024 count
Owner
County
County Highway Agency

About this bridge

Key Road over Entrenchment Creek is a concrete stringer/multi-beam or girder carrying Key Road over Entrenchment Creek in DeKalb County, Georgia. It was built in 1958 and reconstructed in 2018, so it is 67 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. Its operating status is: posted for load restriction.

It carries about 1,600 vehicles a day, roughly 1% of them trucks, projected to reach 1,980 by 2031. The structure is 118 ft (36 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesKey Road
CrossesEntrenchment Creek
Location5.3 MI SE of Decatur
RouteCounty Highway 9120
StateGeorgia
Coordinates33.70117, -84.33224
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating68.9 US tons
Inventory rating37.9 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length118 ft (36 m)
Longest span45 ft (13.7 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2024)
Projected traffic1,980 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$692,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Key Road over Entrenchment Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2018.

What condition is Key Road over Entrenchment 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 2024.

How much traffic does Key Road over Entrenchment Creek carry?

About 1,600 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Key Road over Entrenchment Creek?

The structure is 118 ft (36 m) long with a longest span of 45 ft (13.7 m) and a deck 33 ft wide.

Who owns Key Road over Entrenchment Creek?

It is owned by the County Highway Agency.