Custody Management Of Works, Measure And Accounting, Coordination For Safety In The Execution Of The Works And Assistance To The Testing For The Construction Of The Bridge On The Dora Baltea In Borgo Revel And Sp31 Bis Adjustment Of The Monferrato And Construction And Extraordinary Maintenance Of The Bridge On The River Dora Baltea, In Sant'Anna In The Municipality Of Verolengo-(Race 006-Opopop-2025)