[5] After World War II, the suburb of Fleur-de-Lys developed in the area, and it got its name from the heraldic symbols on the arch.

[3] On 18 April 1943,[6] a Royal Air Force breakdown lorry heading to the airfield at Ta' Qali at night with no street light hit the arch and severely damaged its Santa Venera-facing façade.

The arch was completely destroyed on 12 February 1944, when a Royal Army Service Corps truck hit the remaining parts of the structure.

[6] The stone remains were supposedly stored by the British but, similar to several other historic relics, they were never retrieved by the Maltese and the whereabouts are unknown.

[9][7] In 2012, the Fleur-de-Lys Administrative Committee and the Birkirkara Local Council announced that they were planning to rebuild the arch to the same dimensions of the original.

[8] The police force had initially objected to the project, believing it could become a traffic hazard, but of similar risk comparisons to other monumental arches and gates in Malta, such as the Portes de Bombes.

The arch was inaugurated on 28 April 2016 by Prime Minister Joseph Muscat and mayor of Birkirkara Joanne Debono Grech.

In 2015, the Central Bank of Malta minted a €10 silver coin, and MaltaPost issued a set of two stamps to commemorate the 400th anniversary of the Wignacourt Aqueduct.