US Bridges

Carlton Avenue over LIRR Atlantic Br

Good

Kings County, New York · At Park Slope · Structure no. 000000002243290

Built
2013
12 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
220 ft
4 main spans
Daily traffic
3,380
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Carlton Avenue over LIRR Atlantic Br is a steel stringer/multi-beam or girder carrying Carlton Avenue over LIRR Atlantic Br in Kings County, New York. It was built in 2013, so it is 12 years old, younger than the New York average of 53 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 3,380 vehicles a day, roughly 8% of them trucks, projected to reach 4,732 by 2037. The structure is 220 ft (67.1 m) long and 70 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCarlton Avenue
CrossesLIRR Atlantic Br
LocationAt Park Slope
RouteCity Street 0
Coordinates40.6821, -73.97065
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.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.9 US tons
Inventory rating45 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length220 ft (67.1 m)
Longest span85 ft (25.9 m)
Deck width70 ft (21.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,380 (2017)
Projected traffic4,732 by 2037
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$16.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Carlton Avenue over LIRR Atlantic Br built?

It was built in 2013, making it 12 years old in 2025.

What condition is Carlton Avenue over LIRR Atlantic Br 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 November 2023.

How much traffic does Carlton Avenue over LIRR Atlantic Br carry?

About 3,380 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is Carlton Avenue over LIRR Atlantic Br?

The structure is 220 ft (67.1 m) long with a longest span of 85 ft (25.9 m) and a deck 70 ft wide.

Who owns Carlton Avenue over LIRR Atlantic Br?

It is owned by the City or Municipal Highway Agency.