After being closed since 1974, and suffering years of abandonment, in 1998 the bridge was finally deeded to a nonprofit volunteer organization that hoped to make it into a walkway for pedestrians and cyclists. Walkway Over the Hudson was opened to the public on October 3, 2009 as a pedestrian and cyclist bridge and New York State Park.
Today the Walkway operates as part of the New York State Historic Park System. It is open from 7:00 a.m. to dusk, with parking at both ends of the bridge. Bicycles and rollerblades are permitted on the Walkway, as are pets. At both ends of the Walkway there are public restrooms, and a number of vendors selling drinks and food (including delicious icecream!).
Since its opening in October until the end of 2009, the number of visitors was approximately 450,000, much higher than the projected 267,000 visitors per year. I finally made it into that number, walking across the bridge on an overcast day in August when my sister came to visit a couple of years ago!
It isn't quite as popular a walk in the winter, with the ice on the river below, but there are always some hardy folks who still enjoy it!