To avoid costly repair and liability issues, a property manager’s, facilities manager’s and business owner’s exterior maintenance plan should include regular audits of all the property’s sewer drains and utility holes. Sewer drains and manholes can be found in parking lots, basements, backyards and alleys and with proper maintenance, may last a lifetime. Even with long-lasting characteristics, exposure to outdoor elements plays a role in the lifespan of drains and manholes that are both susceptible to deterioration.
Spring in Wisconsin means longer days, blooming bulbs, baseball...and potholes.
Potholes are caused by the same science that makes a can of soda explode in your freezer - the expansion and contraction of water. Ground water gets under the pavement, expands when frozen, and contracts when it melts. The expansion bends and weakens the asphalt, and the contraction leaves gaps behind where the pavement can collapse and create a hole. This is why potholes multiply in spring as the ground thaws.