100-145 years old in order to complete the layout sounds about right. And it will look amazing to me as I won’t be able to see a damn thing by then.
Regarding the soldering, for the record, I designed and drew all the catenary bridge and Cos Cob bridge parts in CAD. Don created the brass etching sheets from the CAD drawings and had all the brass parts etched. Don is an amazing craftsman and great to work with. Don assembled the high wire towers and various Cos Cob catenary bridges. He assembled the two mid-span lift sections and fixed girder sections of the Cos Cob Bridge model. I assemble the six bridge truss sections and added the plastic detail parts, rivet decals, etc. I assembled the the few triangular wire sections completed to date. Not sure how much of the layout will get the triangular wire at this point but most likely will be limited to the Cos Cob Bridge scene given the time it takes and segmenting it around curves will be challenging. I will be using Don’s standard catenary bridges, anchor bridges and wire types throught the rest of the layout and a small section of his NYC 3rd rail, over the next 35-80 years.
Don has also painted and decaled three brass engines and a heater trailer for me, and regeared one other engine. He can do just about anything!
Not much time left. The bridge alone has taken 3+ years of part-time work from inception, design, fabrication, assembly and painting. I have all my main-line track down and wired but not yet painted or ballasted. Currently working on structures and bridge piers for an elevated section. And then there’s all the rest of the overhead wire to hang! Landscaping is in the distant future.
But it keeps me busy in my spare time and I enjoy doing it and have met some very nice people along the way.