So from the bridge area bus stop headed east along the bike lane (Presidio Promenade) and over to the trailhead for a short trail, mostly covered with small rocks, that runs between two vehicle streets, one above and one below. It comes out at the Battery East Trail near the top of the curvy wooden stairway (153 or so steps).
Took the stairway down (water’s edge), then back up, noting nothing different from the last time I was here (no construction or trail closures), and continued on the main Battery East Trail (third pic). The short low overhead walkers’ tunnel that will take you to the picnic area also remains unmolested.