new layover yard would be required for overnight storage of trains. The layover yard was proposed to be north of Whipple Road in Hayward, and would provide overnight storage for trains entering the Union City station, rebuilt for intermodal service. Heavy maintenance activities (including refueling) would be performed at Caltrain yards on the Peninsula. A new segment, the Industrial Parkway connection, would be constructed to connect the Oakland subdivision and the Niles subdivision north of the layover yard. Centerville to Newark (Segments E/D/C) This segment would reuse the existing Dumbarton Cut-off line west of Newark Junction. Between Newark Junction and Fremont Centerville station, the segment would run on the Union Pacific Centerville line. Newark to Menlo Park/East Palo Alto (Segment B) This segment would reuse the existing line established for the Dumbarton Cut-off in 1910. It would be a single-track line with two sidings, one industrial siding to serve the Cargill Salt Plant and one future siding just east of the Dumbarton Rail Bridge. The industrial siding would be the existing line, with a new main line constructed around the salt loading facility. The two swing bridges and their timber trestle approaches were known to be in poor shape since 1996, and a subsequent 2008 engineering investigation found the concrete foundations were also degraded, possibly since they were constructed in 1910. The 2003 Project Study Report proposed replacement of the Dumbarton Rail Bridge swing span with a bascule, replacement of the Newark Slough Bridge with a steel girder swing span, and new concrete trestles. Menlo Park/East Palo Alto to Redwood City (Segment A) The existing two-track Dumbarton Cut-off line would be converted to a single track system with centralized traffic control; the second track would be retained as a siding in certain portions. This segment would include the proposed Willow Road and Redwood City (Second Avenue) stations. The Dumbarton Rail Corridor merges with the Peninsula Corridor in Redwood City at the Redwood Junction, which is a large wye roughly bounded by Middlefield Road, Woodside Road, El Camino Real, and Dumbarton Avenue. Redwood City to San Francisco Once on the Peninsula corridor, northbound morning trains would provide limited stop service at existing Caltrain stations in Redwood City, Hillsdale, San Mateo, Millbrae, South San Francisco, and San Francisco, with afternoon trains returning to Union City making the same stops, in reverse order. Menlo Park to San Jose Once on the Peninsula Corridor,