The original inner walkway dates from around 1979 with reinforced concrete vertical and raking piles from deck level to below the water level (Figure 7.1). The entire structure was cast in-situ reinforced concrete. Extensive corrosion damage to the steel reinforcement was observed at many locations. This was particularly evident on the soffit and above high-water level on the rectangular section lattice substructure. A significant repair program has been undertaken at a previous time at above the low tide level. In this repair, cracked concrete has been removed and replaced with newly cast concrete. This program did not stop the corrosion and some of the repairs have now also failed due to ongoing oxidation of the steel reinforcement. No evidence of structural distress was evident. Columns, beams and rakers on inner wharf. https://s3-euw1-ap-pe-df-pch-content-public-u.s3.eu-west-1.amazonaws.com/9780429298189/27a36b71-ffae-4811-b0ad-acf84fefe2be/content/fig7_1_B.jpg"/>