CREATE TABLE table_204_763 (id DECIMAL, "county" TEXT, "km" DECIMAL, "intersecting road" TEXT, "notes" TEXT, "coordinates" TEXT)

what is the last intersecting road ?
SELECT "intersecting road" FROM table_204_763 ORDER BY id DESC LIMIT 1
SELECT "intersecting road" FROM "table_204_763" ORDER BY "id" DESC NULLS LAST LIMIT 1