> Budgets are strained precisely because they are saddle with 50 year old structures in need of maintenance. Only a small % of the budget goes to new construction.

You have it exactly backwards - most of the budget goes to capital construction - replacement of existing structures and roads. The maintenance budget is constantly shrunk.

>Stainless steel rebar does not double the cost of construction, and neither does high quality concrete.

Last I checked stainless rebar was ~3x the cost of regular rebar...

"high quality" concrete doesn't mean anything. Most concrete is high quality.

>We need to stop buying subscribtion to "bridge as a service"

All infrastructure requires maintenance and eventual replacement. Bridges will never be permanent and will always require regular inspection, maintenance, etc.