The spire that will sit atop 1 World Trade Center is on its way to the site for installation.

It's 408 feet tall, and has to be transported in 18 sections that weigh between 5 and more than 67 tons. Eight of the sections have to be taken by barge 1,500 nautical miles from Canada on the Atlantic Salvor. It left Quebec on Nov. 16 and is expected next week at Port Newark in New Jersey. The remaining sections are expected to arrive via truck in mid-December.

When the spire is installed, the tower will stand 1,776 feet tall, making it the tallest in the western hemisphere. It will take about three months to install.

Want to track the spire's trip? Click here.