The US military announced that its mission to install and operate a temporary, floating pier off the coast of Gaza was complete, formally ending an extraordinary but troubled effort to bring humanitarian aid to Palestinians, Reuters reports.

The pier was only operational for about 20 days.

“The maritime surge mission involving the pier is complete. So there’s no more need to use the pier,” Navy Vice Admiral Brad Cooper, the deputy commander of US Central Command, told a news briefing.

Cooper said efforts to distribute aid to Gaza arriving by sea would now shift to the established port of Ashdod in Israel. At least 5 million pounds of aid, which are either in Cyprus or on ships, will be going to Ashdod in the coming days, he said.

“Our assessment is that the temporary pier has achieved its intended effect to surge a very high volume of aid into Gaza and ensure that aid reaches the civilians in Gaza in a quick manner,” Cooper said, adding that nearly 20 million pounds of aid was delivered to Gaza.