Yesterday afternoon (8/20) at the Dead Creek Brilyea Access, the shorebirds were right next to the road and causeway near the first parking area. Greater and Lesser Yellowlegs, Killdeer, Least and Semiplamated Sandpiper, and Semipalmated Plover were all present.
Down the trail at the south end of the mudflats, there was less shorebird activity, though I did find a Pectoral Sandpiper there along with lower numbers of the other species I already mentioned. I also found 3 Northern Shovelers, and a Blue Wing Teal in that area.
So as it currently stands, it doesn't take a hike to get good looks at shorebirds.