Already under temporary deviation due to construction, this is a complete closure to navigation. NOTE: Under Schedule Deviation until May 31, 2018 See https://cruisersnet.net/170284

FLORIDA – ATLANTIC INTRACOASTAL WATERWAY – PALM SHORES TO WEST PALM BEACH –SOUTHERN BOULEVARD BRIDGE: Bridge Construction.
Johnson Brothers Corporation has advised the Coast Guard that they will start working on the Southern Boulevard Bridge replacement on April 1, 2017. There will be floating equipment in the vicinity of the bridge for the next four years. Future updates will be provided as the temporary bridge is built and the old bridge is removed and replaced.
UPDATE: 
The Coast Guard has issued a temporary deviation to the operating schedule of the Southern Blvd (SR 700/80) Bridge, mile 1024.7, across the Atlantic Intracoastal Waterway, at West Palm Beach, Florida. Due to construction of the new Southern Blvd Bridge, the Southern Blvd Bridge will be unable to open to marine traffic from 7 a.m. on April 9, 2018 through 6 p.m. on April 16, 2018. There will beconstruction equipment blocking the channel while the new span is being installed and the mechanical startup is being performed. There will be a full channel closure during this time. From 7 a.m. April 17, 2018 through 6 p.m. April 30, 2018, the bridge will be able to accommodate a full channel opening with a 4 hour notice by contacting Clay Bores at 407-488-0738. For on-scene communications,
mariners are advised to contact via VHF Marine radio channel 9. If you have questions on this temporary deviation, call or e-mail LT Ruth Sadowitz, Coast Guard Sector Miami, FL, Waterways Management Division, telephone 305-535-4307, email ruth.a.sadowitz@uscg.mil. Chart 11472 LNM 14/18

Click Here To Open A Chart View Window Zoomed To A “Navigation Alert” Position at Southern Blvd Bridge

Click Here To View the Eastern Florida Cruisers’ Net Bridge Directory Listing For Southern Blvd Bridge