Sydney Harbour Bridge has
four 89 m (292 ft) high, concrete pylons, one of which sits
on top of each abutment, at each end of the (two) arches.
According to Wikipedia; Some 250 Australian, Scottish, and Italian stonemasons
and their families relocated to a temporary settlement at Moruya, NSW, 300 km (186 mi)
south of Sydney, where they quarried around 18,000 mᵌ (635,664 cu ft) of granite
for the bridge pylons. The stonemasons cut, dressed and numbered the blocks,
which were then transported to Sydney on three ships built specifically for this
purpose. The concrete used was Australian-made.

C U on the email, keith 