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The overcrossing would require construction of touchdown landings with graduated ramps on the north side of Dublin Boulevard within Don Biddle Park, which is currently under construction, and on the south side of Dublin Boulevard within the existing Iron Horse Trail right-of-way. The primary objective of the Iron Horse Trail - Dublin Boulevard Overcrossing Project is to provide a safe crossing for Trail users and facilitate improved traffic flow along Dublin Boulevard by providing a grade-separated bridge crossing over Dublin Boulevard for pedestrians and bicyclists.Ĭonstruction of the proposed bridge crossing would allow Trail users to stay on the Trail and cross over multiple lanes of automobile traffic on the proposed bridge. Trail users approaching Dublin Boulevard from the southeast are currently required to turn left and use the sidewalk along the south side of Dublin Boulevard for approximately 200 feet, cross the street at the existing Scarlett Drive signalized intersection, and then turn right and use the sidewalk along the north side of Dublin Boulevard for approximately 100 feet to get back to the Trail. The existing trail at-grade crossing of Dublin Boulevard is quite skewed. Currently, the Trail runs from northwest to southeast as it approaches Dublin Boulevard, which is a heavily traveled east-west roadway. The proposed project is a free-span bridge crossing of Iron Horse Regional Trail over Dublin Boulevard within the City of Dublin. The Iron Horse Regional Trail has several existing bridges over busy roadways to help improve traffic flow on the roadways and pedestrian/bicycle movement along the Trail. The Trail also directly connects to both the Dublin/Pleasanton and Pleasant Hill BART stations. The Trail currently passes through the cities of Livermore, Pleasanton, Dublin, San Ramon, Danville, Alamo, Walnut Creek, Concord, and unincorporated areas of the Counties of Contra Costa and Alameda. The Iron Horse Regional Trail was first established in 1986 and is maintained by the East Bay Regional Park District. The Iron Horse Regional Trail is a major regional trail for pedestrians and bicyclists through central Alameda and Contra Costa Counties, generally following a former Southern Pacific Railroad right-of-way that was abandoned in 1977.