CREATE TABLE table_11638 ("Route Name" TEXT, "Direction" TEXT, "Termini" TEXT, "Junctions" TEXT, "Length" TEXT, "Population Area" TEXT, "Remarks" TEXT)

What is the length of the highway with the route name sh 2?
SELECT "Length" FROM table_11638 WHERE "Route Name" = 'sh 2'
SELECT "Length" FROM "table_11638" WHERE "Route Name" = 'sh 2'