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From the Archives: July 31, 1952

ENR 150th Anniversary

This 1952 cowl depicts two monumental concrete caissons sitting in a pure drydock in Stony Level, N.Y.

Every caisson is 360 x 82 x 32.5 ft. and weighs 27,000 tons. Together with a 3rd caisson that’s 367 x 87 x 28 ft and 19,000 tons (not pictured) they had been solid within the dry in an deserted clay pit off the west financial institution of the Hudson River, the place seepage of water had shaped a 2,100-ft-long, 650-ft-wide pond parallel to the river.

After pumping the pond dry, shovels and draglines had been used to take away 150,000 cu yd of mud, clay and silt. 5,300 tons of reinforcing metal was welded into assemblies, which gantry cranes positioned forward of wooden types, adopted by a sequence of 36 pours.

The finished watertight caissons had been then towed 38 miles downriver and set atop pilings from the earlier pier (destroyed in a hearth in 1947) whereas their buoyancy supported 90% of the overall load.

Dubbed the “SuperPier,” this design was thought-about progressive, because it was fireproof and couldn’t be attacked by marine borers, each threats which had lengthy plagued waterfront buildings.

It was the biggest pier in New York Metropolis when it opened in 1954, with 633,000 sq ft of ground house throughout its two flooring. Often known as Pier 57, it initially served the Grace Line’s ocean liners, was later used as a bus depot.

Since 2023, it’s house to Google workplace house, a rooftop backyard, and a meals corridor.


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