Cross-posted from the Department of Transportation’s blog.
Yesterday, Federal Highway Administrator Victor Mendez went to Oakland to mark the beginning of what he called "a fascinating and critical phase" of the Caldecott Tunnel Fourth Bore project.
You may remember a blog post earlier in the year marking the launch of this important addition to the Caldecott Tunnel. Well, this week, with the groundwork complete, the crew brings out the big machine–a road header–and the actual tunnel bore begins.
If you’re a fan of transportation infrastructure, you know that’s when things get interesting. Because a road header is not just any machine. It’s a 130-ton rock-crunching, rotating cutting head built at the end of a boom that will push it though the bedrock of the Berkeley Hills.
Administrator Mendez (right) stands beneath the road header with project manager Bill Monahan.
But, for the many workers hired to prepare the site for the tunnel bore, it’s been plenty interesting since January simply because they’ve had jobs.
Fonte: White House