To assist Biden in his 1 trillion infra plan I suggest the following:
Sell existing road *** rail bridges to countries like India. We could dismantle them, ship, heat treat the steel and re-erect on locations of our choice. For example the Golden Gate could connect Sri Lanka to India.
Amtrak with their elevated track sections could go to Saudi Arabia. KSA has been struggling to link their East and West coasts over the dessert.
There maybe a lot of bidders for Disney Land. So I leave this open.
US could accrue 20 billion from these sales and it will certainly be a change from the usual shipment of used fighter jets sold to these countries not to mention reduced carbon emission and promotion of world peace.
A few things wrong with this.
1. It's unlikely that India would buy our scrap steel for their bridges. If they could afford bridges they'd make them, and for less than the cost of shipping and refurbishing our leftovers.
2. In your Saudi Arabia example, once the tracks get shipped away, we'd have to replace them. The tracks actually help hold the railway land rights, and without tracks they'd be hard-pressed to justify their ownership. Also, it's unlikely Saudi Arabia would buy hand-me-down tracks when they've got their own $trillions to buy world-leading railways, if they wanted them.
3. Lastly, even if the US sold $20 billion in scrap metal, that's not even a month's interest payment on the national debt.