710 Tunnel Study Geotechnical Investigation Begins

January 7, 2009 rockman Project Related Comments Off on 710 Tunnel Study Geotechnical Investigation Begins

Geotechnical drilling was set to begin yesterday on the 710 Tunnel Technical Study in the L.A. area. Currently the 710 freeway ends along the city of Los Angeles-Alhambra boundary but was intended to run north to a junction with the 210 and 134 in Pasadena. The tunnel technical study will assess the feasibility of building a tunnel to complete the segment. Caltrans and CH2M HILL will be performing the borings which will go up to 250-ft deep. Seismic lines will be performed as a part of the study as well. Source: LA Times.

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Tunnel Proposed to Link Europe and Africa at Straits of Gibraltar

February 26, 2008 rockman Project Related Comments Off on Tunnel Proposed to Link Europe and Africa at Straits of Gibraltar

The proposed railway tunnel will link Spain and Morroco underneath the Straits of Gibraltar.  The depth of the straits ranges from 1,000-ft to nearly 3,000-ft. To put that in perspective, the English Channel is only 150-ft deep, and the Chunnel is another 130-ft below the sea floor. (Photo by chodaboy)

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