The Municipalidad de San José would like residents to keep the manhole covers in place. The steel covers are much valued by crooks who swipe them and sell them to equally crooked junk yard operators.
The municipality said Thursday that it has considered other materials in place of steel but has not found a satisfactory substitute. Consequently it is asking citizens to keep watch, it said.
Missing manholes provide excitement for motorists when a wheel drops into an open hole. Sewer systems with missing covers also are collectors of all kinds of garbage that eventually leads to a blockage and flooding, the city said.