Bridges & Marine Structures

Working on the water while removing marine structures requires greater expertise, experience and coordination than demolishing anything on land. CDI’s experience in the successful demolition of thousands of suspension, arch, truss, girder and bascule bridge elements and other marine structures can be the critical factor in executing a demolition plan to meet the marine contractor’s schedule and ensure attainment of removal limits the first time. Where bridge structures have deteriorated or suffered damage, CDI experience in dealing with failed yet standing structural systems becomes even more important on marine projects where a second chance can be expensive if not impossible.

Our DREXSrn (Directional Remote Explosives Severance) systems are engineered and applied to reliably segment steel components into pieces matching the capacity of the contractor’s equipment in consideration of river bottom conditions. State of the art and proprietary underwater blasting techniques ensure fragmentation of piers, dams and other marine structures to removal limits, and maximize efficiency of post-blast debris removal.

Hands-on management, from design through preparation and completion of marine demolition operations, ensures absolute safety of personnel and on-schedule performance while minimizing impact on navigable waterways, aquatic life and water quality.

Watch below for more CDI Bridge implosions:

Project: Kosciuszko Bridge
Date: 10.01.2017

A Close Encounter

CDI performed the successful explosives felling of the 3,104’ long, 20-span, structural steel approach trusses to the Brooklyn-Queens Expressway span over Newtown Creek in New York at 8:00 AM on Sunday, October 1, 2017.

Learn More About This Project

Project: NYS Route 32 Bridge Piers (Cohoes-Waterford Bridge)
Date: 10.05.2017

The New Bridge, Just Feet Away

Controlled Demolition, Inc. (CDI) of Phoenix, Maryland, USA (acting as Explosives Subcontractor to Main Demolition Contractor, D.A. Collins Construction Co., Inc. of Wilton, New York) performs the successful explosives fragmentation of 2,200 in-place cubic yards of reinforced concrete comprising the below-water portions of six (6) piers in Cohoes, New York at 10:21 AM on Thursday, October 5, 2017.

Learn More About This Project

Project: Tappan Zee Bridge - East Anchor Span
Date: 01.15.2019

Demolition Failure - Tarrytown, NY

CDI performed the preparation for and successful explosives operations toward the felling of the Tappan Zee Bridge east anchor span on the Hudson River in Tarrytown, New York on Tuesday, January 15, 2019.

Learn More About This Project