The following is from NPS. Wayne just posted it under announcements.
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Bullfrog North Ramp Construction: The Bullfrog North Ramp has been permanently extended as far as possible, to reach a lake elevation of 3525 feet. The last concrete pour is curing. Use of the ramp will be dependent on lake levels reaching 3525 feet or higher. Stay tuned for more information.
The overall announcement shows the lake still dropping as of 04/20.
Note that NPS, in all of their written communications at least, have never mentioned pipe mats or steel plates at this location, but they do mention it at Stateline. If accurate, this ramp may not be available until late May at the earliest.