Inner Tay Estuary viridis" - a species normally found only in north-eastern North America. Scottish Natural Heritage has commissioned and published habitat survey reports for the Inner Tay Estuary. Public roads run within a few hundred metres of the both north and south shores providing easy access to view the estuary and its wildlife, though car parking is limited in many places: (south shore) Wormit, Balmerino, Newburgh, Elcho Castle; (north bank) Riverside Drive in Dundee by the railway bridge, Invergowrie, Kingoodie, Port Allen, Powgavie, Cairnie Pier; (in Perth) from both banks, the bridges, Moncreiffe Island; (in Bridge of Earn) the bridge. The minor
Tay Rail Bridge Tay Bridge the diagonal bracing was by means of flat bars running from one lug at the column section top (an integral part of the column casting ) to two sling plates bolted to the diagonally opposite lug. Bar and sling plates all had a matching longitudinal slot in them; the tie bar was placed between the sling plates with all three slots aligned and overlapping and a gib driven through all three slots and secured. Two cotters (metal wedges) were then positioned to fill the rest of the slot overlap, and driven in hard to put the tie under