Applying a protective surface—or chip seal—to existing asphalt on relatively low-traffic roads is a pavement preservation method used by many transportation agencies. Yet despite its popularity, chip seals can cause various issues. Some agencies have found that applying a fog seal following a chip seal is a cost-effective strategy for improving asphalt performance and public satisfaction.
Continue reading Putting Research Into Practice: Fog Sealing Chip Sealed Roads Can Improve PerformanceTag Archives: best practices
New Project: Public Engagement Practices During the COVID-19 Pandemic and Other Disruptive Events
Pandemics, social unrest and natural disasters can disrupt state efforts to reach the public about projects, priorities, policy issues and services. MnDOT and other agencies have turned to Skype, Zoom, Webex, Facebook Live and other tools to present proposals and receive public input with some success. Participation in public meetings that in the past would have drawn fewer than 10 attendees may now draw 80 online.
Continue reading New Project: Public Engagement Practices During the COVID-19 Pandemic and Other Disruptive Events
Guidance for Working With Potentially Acid-Generating Materials
A new resource is available to help agencies greatly reduce the risk of disturbing potentially acid-generating (PAG) rock in places like northern Minnesota when conducting road projects. When exposed to air and water, PAG minerals can generate drainage that is hazardous to the environment. A MnDOT-sponsored research team developed a best practices manual that provides comprehensive steps to identify, mitigate and monitor PAG material during highway construction.
Continue reading Guidance for Working With Potentially Acid-Generating Materials
Crossroads 