Proposed 35 km-long extension of San Francisco BART will include 14.5 km alignment in tunnel with five underground stations at Berryessa, Alum Rock, Civic Plaza/SJSU, Market St and Diridon/Arena, terminating at Santa Clara Caltrain station. Visit www.hatchmott.com and www.pbworld.com 26/01. 5.4 km-long, 5.5 m-diameter TBM-driven, segmentally-lined twin-tube railway system with eight NATM stations in design for MWAA Dulles airport for completion by 2006. Visit www.hatchmott.com and www.ilf.at 31/01.A USD51.2 million spending has been approved by the Valley Transportation Authority to begin planning the tunnel that will carry BART trains under downtown San Jose. Preliminary engineering is for a 7.2 km twin-bore tunnel that will run 15 to 23 m below ground starting at 28th and Santa Clara streets and extending to west of Interstate 880. Studies are expected to take two years or more. The VTA expects to award USD119 million in contracts for a half-dozen more studies by the end of summer. Visit www.vta.org 09/04.Proposed 25.76 km-long, USD6.1 billion extension of BART to Milpitas, San Jose and Santa Clara will include 6.4 km of twin running tunnels and three underground stations at Alum Rock, Downtown San Jose, and Diridon/Arena to terminate near Santa Clara Caltrain station. EIS during 2009, with construction scheduled 2009-2015. Visit www.vta.org/bart. 08/09.