The Tassajara Creek Trail extension was developed in concert with Roxbury, a single-family home community in Dublin. A new multi-use trail was created along the creek edge. The trail is a continuation of an existing multi-use path on the south side of the creek, which connects to Emerald Glen Community Park and eventually the Iron Horse Trail.

TGP worked with Jeff Olberding, Environmental Consultant, the Department of Fish and Game, Zone 7 Water District, East Bay Regional Parks, and RJA, the project Civil Engineer, to create a vital wildlife habitat along the creek. Existing trees were preserved and new plantings were introduced to improve the biodiversity of the ecosystem.