US Bridges

Carroll Street over Gowanus Canal

PoorClosed to traffic

Kings County, New York · Over Gowanus Canal · Structure no. 000000002240260

Built
1889
136 years old, rebuilt 2013
Condition
Poor
inspected December 2024
Type
Movable - Swing
Steel
Length
108 ft
2 main spans
Daily traffic
914
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Carroll Street over Gowanus Canal is a steel movable - swing carrying Carroll Street over Gowanus Canal in Kings County, New York. It was built in 1889 and reconstructed in 2013, so it is 136 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 914 vehicles a day, roughly 6% of them trucks, projected to reach 1,280 by 2040. The structure is 108 ft (32.9 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCarroll Street
CrossesGowanus Canal
LocationOver Gowanus Canal
RouteCity Street 0
Coordinates40.67825, -73.98932
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeMovable - Swing
MaterialSteel
DeckWood or timber
Main spans2
Design loadUnknown
Structure length108 ft (32.9 m)
Longest span62 ft (18.9 m)
Deck width28 ft (8.5 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deck13 ft (4.1 m)

Traffic and service

Average daily traffic914 (2020)
Projected traffic1,280 by 2040
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 statusEligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$7.7 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Carroll Street over Gowanus Canal built?

It was built in 1889, making it 136 years old in 2025. It was reconstructed in 2013.

What condition is Carroll Street over Gowanus Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does Carroll Street over Gowanus Canal carry?

About 914 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Carroll Street over Gowanus Canal?

The structure is 108 ft (32.9 m) long with a longest span of 62 ft (18.9 m) and a deck 28 ft wide.

Who owns Carroll Street over Gowanus Canal?

It is owned by the City or Municipal Highway Agency.