(ANSA) – Venice, September 14 – The search is on for a private sponsor to fund the restoration of Venice's signature Rialto Bridge, one of four spanning the Grand Canal. At the end of September prospective sponsors can begin bidding to finance the five-million-euro restoration in exchange for advertising on the bridge and the possibility of organising events in St Mark's Square and the Doge's Palace, the Venice city council said on Friday. The competition will last 60 days. Renzo Rosso, owner of clothing company Diesel, has already expressed interest in taking part, and has been rumoured as a principal bankroller for the past year. The work on the bridge is expected to take 18 months and if all goes to plan it will finish in April 2015. The city council also plans to restore the wooden Academia Bridge, also on the Grand Canal, under a similar formula.