In regions susceptible to massive flooding and wildfires, the application of concrete pipe and boxes for culverts and associated storm sewers makes sense because concrete culverts don’t burn, they resist buoyancy, have installation savings, are strong and durable, can be used for stormwater retention, and producers are nearby to supply products in a hurry.
If the decisions to use materials and products that corrode quickly, incinerate, or float away are not technical in nature, then the public deserves an answer from their elected officials why their taxes are being used to support temporary roads, sewers and culverts.