PARIS — British authorities confirmed Tuesday that construction will begin this month on a concrete wall in Calais intended to keep migrants and refugees from the city’s port, where they frequently attempt to stow away on UK-bound trucks and ferries.

‘‘This measure is intended to further protect the Rocade from migrant attempts to disrupt, delay, and even attack vehicles approaching the port,’’ the British Home Office said in an e-mailed statement. The Rocade is an access road leading into Calais’s port.

On Monday, French truck drivers and local residents protested against the large migrant camp outside the city.

In the camp, between 7,000 and 9,000 refugees and migrants — mostly from Afghanistan and Sudan — live in squalid conditions and legal limbo. Nearly equidistant from London and Paris, “the Jungle’’ has become an arresting symbol of Europe’s migrant crisis, no longer confined to the continent’s periphery.

The wall, a crucial part of a $22.65 million Franco-British security package agreed to in early March, is slated to be approximately 13 feet high.

Washington Post