The original name for this bridge was Pont de Solferino.
However, on the centenary of the birth of the Senegalese poet, who was the president of Senegal for twenty years, it was renamed the Passerelle Léopold Sédar Senghor.
But this is not a new phenomenon and exists in several other countries. Love padlocks, or love locks can, for example, be found on the Ponte Milvio in Rome, a custom which is attributed to Federico Moccia's book Ho volgia di te (I Want You), which was later turned into a movie.
Many are presumably been there a long time from the rust on them.
And some couples make the effort to have them engraved.
'J'AI RÊVÉ D'UN MONDE DE SOLEIL
DANS LA FRATERNITÉ DE MES FRÈRES
AU YEUX BLEUES
LÉOPOLD SÉDAR SENGHOR
ÉCRIVAIN ET HOMME POLITIQUE