According to m-bike, Miliken State Park is finally open to the public. This means that the Riverfront doesn't dead end at Rivard Plaza anymore, but continues east for a bit. There is a trailhead to the Dequindre Cut that is part of the park, but apparently that isn't quite done yet. Any progress is good progress -- although we cannot wait until the day when Bridge to Bridge becomes a reality.
Read more here.