As stated below, this Slow/No Wake Zone is east of the Main Street Bridge in downtown Jacksonville. No date for completion is given.

FLORIDA – ST JOHNS RIVER – TERMINAL CHANNEL: Slow/No Wake Zone, Precaution Area.
Superior Construction will be conducting demolition and construction operations on the wharf structures located approximately 1,500 feet east of the Main Street Bridge on the north side of the St. Johns River, near downtown Jacksonville’s old shipyards. The Captain of the Port Jacksonville requests all mariners transiting the river east of the Main Street Bridge and adjacent to the north bank docks of the old shipyards, to proceed with caution and transit at a minimum safe speed to reduce wake.
The work is scheduled to commence on or around January 6, 2017 and will continue over the course of several months. The demolition and construction work will normally take place on weekdays during daylight hours. The operations will involve several commercial vessels, including the use of crane and material barges to remove concrete debris and drive piles. There will be a continuous transit of loaded barges from the work site to the north bank shipyard docks near the mouth of Hogan Creek. Additionally, work vessels will be moored along the project site at night. If
additional information is required, the Project Superintendent can be reached via landline at 904-292-4240. Jobsite operators will be monitoring marine VHF Channel 16. Chart 11491 LNM 51/16

Click Here To Open A Chart View Window, Zoomed To the Location of Main Street Bridge