Blowing up the bridges and then rebuilding them all would be excellent economic policy, however.
The broken window theory of economic development is bunk.
Well, obviously it isn't, but your objection is beside the point since the bridges are already 'broken' by wear and tear.
If you destroy a window, then you're giving work to the person to replace it, but it means the owner of said broken window is out of pocket, which could have been used to buy something else and thus stimulate the economy elsewhere.
