Duterte said the Department of Public Works and Highways has indicated they will not be able to finish the construction of a new structure by December.
He said it will take at least three more months as the national government decided to build a concrete bridge after all.
The bridge was closed last month after one of its foundations gave way, causing traffic congestion and delaying the full implementation of the new traffic signalization system.
Duterte has considered the traffic caused by the closure of the bridge as one of the biggest concerns confronting the city.
Last month, the DPWH told Duterte they have eyed building a steel bridge, a cheaper structure and similar to those built under President Arroyo's "Tulay ng Pangulo" (President's Bridge) program.
A steel bridge is faster to build and would cost a third less of the proposed P340-million budget.
But Duterte said a steel bridge will not appear good beside the existing cement structure of Generoso Bridge 2.
Bangkerohan Bridge, a national infrastructure, is vital to mobility in the city as it is one of two major ways connecting the city's downtown area to the south.
It was the first bridge to connect the downtown area with the southern part of the city.
But Duterte earlier said the city's absorption capacity for more motor vehicles is an even greater issue. (WI Balane/MindaNews)