The Anacostia Riverwalk Bridge will soon be completed, according to the Life in the Village Blog and TheWashCycle.
With the completion of the Anacostia Riverwalk Bridge, residents can now (almost) walk or bike from the Benning Bridge in ANC7D01, to Yards Park and Nats Stadium in Southwest DC along a pedestrian/bike only trail. The only section yet to be completed is at the Navy Yard.

Event information is below:
Tuesday, April 24, 2012
11 am – 12 pm
South entrance of new Anacostia Riverwalk Trail Bridge
1960 M Street SE (just northeast of the Pennsylvania Avenue, SE overpass)
Washington, DC 20036
R.S.V.P. before Friday, April 20 by phone at202-589-2713 or email at ddot.awi@dc.gov
This is so wonderful!