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| | CPRR Discussion Group - Central Pacific Railroad Photographic History Museum |
 | | All original tunnel were enlarged in the 1960's by having their ceiling raised some 2 feet, except Tunnel #6, which had it's floor lowered some 2 feet. |
 | | Tunnel #7 – Located at Mile Post 194.1, length was 100 feet, it was was daylighted, and then a concrete roof was constructed, replacing the removed stone roof. |
 | | Tunnel #21 – At Mile Post 124.60 on the 1912 line, East of Auburn Station at Nevada Street, length is 1,210.66 feet, of which 531 feet is lined with concrete portals, 428 feet of gunite with steel bents, 43 feet is gunite only, and 208.66 feet with timber posts between concrete ribs. |
| cprr.org /CPRR_Discussion_Group/2005/12/list-of-cprr-tunnels.html (1771 words) |
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