Due Diligence Survey: Avoid Costly Project Sinkholes

Sinkhole on a gravel road with warning sign showing why a due diligence survey is needed before construction

In late September, the city of St. Paul finally reopened West 7th Street after a massive 35-foot sinkhole forced crews to shut it down for months. The collapse happened above an 1879 sewer tunnel, and the fix cost millions of dollars. For many residents, it was a traffic headache. For builders and developers, it was […]