In '30 years of peace and prosperity', the cartoon state of SL wasn't even able to lay 10kms of stormwater or wastewater drains. Maybe in another 30 years they may be able to the very basic technology required to manufacture reinforced concrete pipes (or fibre reinforced concrete pipes).
It's sad because it isn't difficult to do, neither it is too expensive to do.
Do you have a spare Billion dollars in your pocket, motherfucker?
How is a country operating on 300 million dollars a year gonna pay for infrastructure that even rich nations like UK struggle to improve?