CREATE TABLE table_8100 ("Name" CLOB, "Built" CLOB, "Listed" CLOB, "Location" CLOB, "County" CLOB, "Type" CLOB)

When was Blackburn Point Bridge built?
SELECT "Built" FROM table_8100 WHERE "Name" = 'blackburn point bridge'
SELECT "Built" FROM "table_8100" WHERE "Name" = 'blackburn point bridge'