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San Pablo/Atlantic Boulevard Bridge crosses the Waterway at Statute Mile 744.5. Having seen the currents here for myself, I can tell you that Captain Ising isn’t kidding nor relaying inaccurate data. The water movement can be fierce!
In recognition of that fact, we are establishing an SSECN Navigation Alert for these waters!

We just passed through on 16 Sep 2012 at what was likely max ebb and barely made 1.0 kts SOG. Our boat under full power will do about 6.2 kts, so I estimate the current can get as high as 5+ kts. It was scary with boats ahead and astern wondering if we were going to make it.
Duane Ising

In all of Jacksonville that bridge has the strongest current first only to the Main Street bridge on the Saint Johns river In downtown Jacksonville. The travel under this bridge must scrutinized according to the tides as it is a truly powerful funneling of water through a narrow gap. Water flow can exceed 6 knots.
Dave Bennett

My boat is at Harbortown Marina right there at Atlantic Blvd and the ICW, and yea, I can’t go anywhere when she’s running strong. The current is just as dangerous two miles north where the ICW crosses the St.John’s River, stay well away from the jetty and watch your sideways set action.
Keith Blankenship s/v Renasci

We came through this bridge about the 13th of Nov. 2012 and it was horrible !! Outgoing tide and we had all we could do get through ‘“ my guess is that we were doing no more than 1 ‘“ 1.5 knts; plus the turbulence approaching and under the bridge was like a washing machine. This is an extremely dangerous situation and most expecially when you some idiot approching from the opposite direction with the current, can obviously see that you are having a major control problem and continues to enter the bridge.
Pat Kenefick

Click Here To View the Eastern Florida Cruisers’ Net Bridge Directory Listing For San Pablo/Atlantic Blvd Bridge

Click Here To Open A Chart View Window, Zoomed To A “Navigation Alert” Position at San Pablo/Atlantic Boulevard Bridge