US Bridges

Decatur Street over M-9180 Boulevard

Fair

Fulton County, Georgia · In Atlanta · Structure no. 000000012104100

Built
1930
95 years old, rebuilt 1949
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
17,100
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Decatur Street over M-9180 Boulevard is a steel stringer/multi-beam or girder carrying Decatur Street over M-9180 Boulevard in Fulton County, Georgia. It was built in 1930 and reconstructed in 1949, so it is 95 years old, older than the Georgia average of 47.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 17,100 vehicles a day, roughly 1% of them trucks, projected to reach 28,980 by 2031. The structure is 50 ft (15.2 m) long and 55 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesDecatur Street
CrossesM-9180 Boulevard
LocationIn Atlanta
RouteCity Street 1790
StateGeorgia
Coordinates33.7515, -84.37108
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length50 ft (15.2 m)
Longest span33 ft (10.1 m)
Deck width55 ft (16.7 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,100 (2024)
Projected traffic28,980 by 2031
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$373,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Decatur Street over M-9180 Boulevard built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1949.

What condition is Decatur Street over M-9180 Boulevard in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Decatur Street over M-9180 Boulevard carry?

About 17,100 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Decatur Street over M-9180 Boulevard?

The structure is 50 ft (15.2 m) long with a longest span of 33 ft (10.1 m) and a deck 55 ft wide.

Who owns Decatur Street over M-9180 Boulevard?

It is owned by the City or Municipal Highway Agency.