[pwrsysengineer]

> Why are we still building towns with the pipes under roads? Keep them under the sidewalks with loops in the cement blocks so they can be easily lifted up and moved for repairs.

This isn't a bad idea for maybe a single utility but I dont think you are considering how many utilities are under the ground: water, sewer, street runoff, natural gas, electricity, telecommunications. Each of these may have multiple lines for each of service, distribution, and transmission. One of the reasons streets get torn up a lot is that there is a low of equipment underground!