Our nation took a heinous hit on Sept. 11, 2001.

So did the lower-Manhattan skyline.

But on Thursday, in a better-late-than-never task, skilled workers guided the spire of the new One World Trade Center — aptly draped with Old Glory — toward the top of that glorious building.

The 700-plus-ton spire is now in a temporary spot near the top of One WTC until final installation makes it the tallest building in the Western Hemisphere at — also aptly — 1,776 feet.

This uplifting symbol of revival from the ruins of Ground Zero should also make Americans proud — and make our terrorist enemies freshly aware of the futility of their vile cause.

As Steve Plate, director of construction at the World Trade Center, told the New York Daily News: “This is about putting the candle on the cake. People committed to making this happen for the loved ones they lost — but also for the region and the world.”

And it just so happened that this gratifying event in New York occurred on the second anniversary of a gratifying event in Pakistan — the elimination of Osama bin Laden by Navy SEALs Team 6.

So congratulations to those construction crews that are topping off a grand achievement.

And the next time you check out that epic view of New York City heights, focus on their latest — and tallest — addition.

Focus, too, on what the new One World Trade Center proves about our ever-resilient Land of the Free.