TUNNEL SOUTH PORTAL

J Payler    c. 2005

J Payler    March 2006

No doubt the brickwork was pitched to compensate for the pressures from the bank
behind.  The North Portal failed and needed completely rebuilding in 1903.  The South
Portal still does not require rebuilding but the brickwork is somewhat damaged.  The
work in early 2006 is to cope with water drainage from the structure and to correct the
detachment of the surface of the bricks (spalling) caused by frost action and postponed
mortar pointing.