Aid trucks begin moving ashore via U.S. Gaza pier

(Reuters) -Aid trucks began moving through a temporary U.S.-built pier off the Gaza Strip on Friday, amid growing international pressure to get more supplies into the besieged coastal enclave, where hundreds of thousands face an acute humanitarian crisis.

U.S. President Joe Biden announced the plan for the pier in March as aid officials implored Israel to improve access for relief supplies into Gaza over land routes.

Below is a timeline of events leading to the arrival of the pier off Gaza.

March 7 - Biden says in his State of the Union speech the U.S. military will build a temporary port on Gaza's Mediterranean coast to receive humanitarian aid by sea. The announcement came as he seeks to cool anger among many in his Democratic Party over his support for Israel in its offensive in Gaza since Oct. 7, given the steep toll on civilians.

March 8 - The Pentagon says Biden's plan could take up to 60 days to become a reality and involve more than 1,000 American troops. Officials say a floating pier would be installed in place off Gaza and attached to land by a temporary causeway. Aid will be shipped to it from Cyprus where Israeli officials will inspect it, as they currently do at the land borders, to stop anything going into Gaza that they deem to have a possible military use.

April 3 - The U.S. State Department says an attack that killed seven World Central Kitchen aid workers on April 1 would not affect U.S. efforts to build the pier.

April 25 - A United Nations team in Gaza visiting the site for the pier and the staging area for maritime aid operations had to seek shelter in a bunker "for some time" after the area came under fire, a U.N. spokesperson says.

April 25 - The Pentagon says U.S. troops have begun construction of the pier off the coast of Gaza, as international officials warn of the risk of famine in northern Gaza. Concerns about the risk to American troops getting caught up in the Israel-Hamas war were underscored as news emerged of a mortar attack near the area where the pier will eventually touch ground. No U.S. forces were present, however, and Biden has ordered U.S. forces to not step foot on the Gaza shore.

April 29 - A U.S. defense official says cost estimate to build the pier has risen to $320 million, illustrating the massive scale of a construction effort.

May 1 - The Pentagon says the U.S. military has so far constructed over 50% of the pier, which has several different components. "The floating pier has been completely constructed and setup. The causeway is in progress," a spokesperson said.

May 2 - White House says the pier should be open within a matter of days, despite poor weather hampering preparations.

May 3 - The U.S. military said it was temporarily pausing the offshore construction of the pier because of weather conditions and instead would continue building it at the Israeli port of Ashdod.

May 9 - The U.S. flagged vessel Sagamore carrying aid to be unloaded at the pier sets sail from the port of Larnaca, Cyprus in the morning.

May 15 - A British shipment of nearly 100 tonnes of aid has left Cyprus bound for the temporary pier, the British Foreign Office says.

May 15 - The U.S. military starts moving the pier towards the Gaza coast, a U.S. official says.

May 16 - The pier is anchored to a beach in Gaza.

May 17 - The U.S. Central Command said trucks carrying humanitarian assistance began moving ashore via the pier at 9 a.m. local time (0600 GMT).

(Reporting by David BrunnstromEditing by Don Durfee, William Maclean)