Wednesday, March 31, 2010

Cropsey Avenue Bridge, Brooklyn, Coney Island Creek

Cropsey Avenue Bridge, Brooklyn, Coney Island Creek, March 31, 2010
Harry Petersen, Keith Nelson, Rob hickman, Kyle Petersen

From B & H Engineering:

The Cropsey Avenue Bridge was built in 1931 as two separate structures sharing common abutments over Coney Island Creek. Both structures are moveable (double-leaf bascule) bridges rotating and opening over the abutments around a trunnion. These structures carry six lanes of traffic, three lanes in each direction. This bridge, together with another bridge (Stillwell Avenue), provides the only access between the communities of Bensonhurst and Coney Island. The Cropsey Avenue Bridge carries a heavy concentration of traffic, both vehicular and pedestrian, especially during the summer months due to its close proximity to the Coney Island beach resort area.

B & H Engineering has provided construction support services to the New York City Department of Transportation for the rehabilitation of the Cropsey Avenue Bridge. These services involve: the review of shop, erection, electrical and mechanical drawings including catalogue cuts, approach deck reinforcement, contractor's proposed loading, calculations and procedures for balancing the bridge, temporary structures, survey data, field changes and modifications, concrete haunch tables; the investigation, analysis and preparation of responses to field changes due to unanticipated field conditions; the clarification and furnishing of design intent of plans, specifications, and estimate.

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