infrastructure
In its concept ludicrous. Bridge will have to be repaired and replaced. All structures will have to be maintained. The cost of doing this is part of the cost of the bridge.
Whoever came up with the paragraph:
"Replacement is not an option because of the capital costs needed and, in a lot of cases, shutting down these bridges to replace them would significantly disrupt traffic and have a big impact on the economy. The best choice is to develop technologies to monitor the development of issues that could compromise the integrity of the bridge."
will have to have his head examined. It is the general "head in the sand" attitude which seems to be prevalent in the USA.