The Northern Avenue Bridge Superstructure Removal Project will consist of removing and loading sections of the steel bridge members onto barges and transporting them to Dry Dock 4 (or a contractor selected site) for disassembly and paint removal. It is anticipated that removal of the superstructure will be accomplished by using barge mounted cranes. Access to scaffolding, rigging, and other methods/procedures by the contractor are not anticipated to interfere with navigation within the Fort Point Channel. Marine traffic will be monitored for the duration of the project. 

The permits are for removal of the current bridge superstructure. The project does not include removal of the substructure or the Bridge Tenders house at this time. This action does not affect any future decision to replace the bridge.

Proposed Project Demolition Sequencing

• Remove Deck Items including lighting, junction boxes, utility cables and conduits, planter boxes, traffic gates, shed and trailer office, timber walkway, chain link fencing, concrete barriers, and other items.

• Remove Approach Spans 1 and 2: Following the installation of temporary bracing as needed; removal of access ladders, bridge railings, swing gate machinery, and any remaining appurtenances; removal of the bridge deck and sidewalks, removal of stringers, floor beams, floor system, and upper bracing.

• Remove Swing Span and Span 3 using a similar method and sequencing as noted above.

• Repair Piers to ensure the stability of the masonry faced piers.