The LA Times is reporting that the California bullet train project may be facing significant budget and schedule issues, largely because of a 13.5-mile tunnel beneath Pacheco Pass east of Gilroy. The article reports that the current budget for the 54-mile segment between Gilroy and Chowchilla is $5.5B, but experts that they interviewed for the story put the cost of the twin-bore tunnel itself at between $5.6 to $14.4B. Geological and geotechnical drilling and testing are currently underway for the tunnel which will be up to 1,000 feet below ground through the challenging Franciscan Complex. Don’t forget about the challenges of a seismically active area and at least one major fault crossing. The designers and engineers for that project are going to have their hands full with that one!
The Toronto Transit Commission is starting a $2.6 Billion project to connect the City of Toronto with the municipality of York. This Toronto-York Spadina Subway Extension Project (TYSSE) consists of an 8.2 km extension of […]
Over 200 buildings will receive some form of geotechnical and geostructural monitoring around the Highway 99 tunnel in Seattle, better known as the tunnel that will replace the Alaskan Way Viaduct. A Seattle Times article […]
[Updated May 26, 2011] A new, cleaner, longer version of the video has surfaced on YouTube recently. You can see it embedded below. It includes some footage of attempts to "water bomb" the rock loose […]