plz help me to estimate this bridge

View attachment 2908any one can help me i need t est

sgaxf , you certainly are embarking on a large task - Estimating structures takes a dedicated effort. It's not a 5-minute task you are on....

Maybe I can help you get started: It looks like the picture is out of a textbook - I'm guessing that you are just looking for ideas on how to start developing a conceptual estimate, yes....? Are you planning on estimating units of work/quantities like an engineer or are you estimating this based on labor/equipment/material costs like a contractor? What kind of help do you think you need?