US Coast Guard's Temporary Navigational Lights Map
In October 2013, temporary navigational lights were relocated as per the diagram below at the existing Tappan Zee Bridge across the Hudson River at mile 27.0. The new temporary navigational lighting plan includes marking the 600 foot wide main channel by affixing four-180° steady, red navigation lights to the underside of the main span, 2 each on the upstream and downstream sides of the structure, 300 feet either side of the centerline of the bridge. Each green center of channel light has 3 white lights stacked vertically above it. The center 600' feet of the Main Navigation Channel will be free for the passage of marine traffic and clear of all obstructions at all times. This temporary configuration is expected to be in place through mid-2015, at which time more detailed information for channel restrictions and closures during the installation of the superstructure of the new main spans will be published.
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U.S. Army Corps of Engineers Approved Mooring Locations
The map below is from the January 14, 2014 U.S. Army Corps of Engineers permit modification for the New NY Bridge Project to replace the Tappan Zee. It shows the approved temporary mooring locations for construction barges on the Hudson River during the project. There will be barges moored at these approved locations both day and night during the project and there will be up to 100 barges, crew boats and other vessels in the area at the peak of construction. Originally, there were 4 mooring locations established in the spring of 2013. 12 additional areas have been approved and the initial 4 will also be reconfigured. The U.S. Coast Guard has issued the following guidance in its Notice to Mariners: "When transiting the area mariners should stay clear of these locations by a minimum of 1000 feet. Mariners are advised to transit the main channel, reduce wake and use extreme caution while transiting the area in the vicinity of the Tappan Zee Bridge paying particular attention to vessel movement and future notices.
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