Question: What is the County of Howard Street Tunnel?
SQL: SELECT "County" FROM "2-17266403-1" WHERE "Name" = 'Howard Street Tunnel';

Question: What is the Location of the Bridge Built in 1869?
SQL: SELECT "Location" FROM "2-17266403-1" WHERE "Built" = '1869';

Question: What is the date Listed of the B & O Bridge in Washington?
SQL: SELECT "Listed" FROM "2-17266403-1" WHERE "County" = 'Washington' AND "Name" = 'B & O Bridge';

Question: What is the date Listed of the Bridge Built ca.1876?
SQL: SELECT "Listed" FROM "2-17266403-1" WHERE "Built" = 'ca.1876';

Question: What is the date Listed of the Bridge Built in 1864?
SQL: SELECT "Listed" FROM "2-17266403-1" WHERE "Built" = '1864';