Minnesota Department of Transportation

511 Travel Info

Independent Assurance Sampling & Testing Schedule

Orange barrels on a highway

Current IAST Schedule

Note: Arrangements must be made with the District Materials Engineer for scheduling independent assurance visits to comply with project requirements.


2017 IAST Protocol (PDF, 235KB, 3pp) - Effective July 1, 2017


Independent Assurance Manual

IA Manual (PDF, 502KB, 42pp) - Effective April 2018

Independent Assurance Inspector Group

Contact the MnDOT District Independent Assurance Inspector (PDF) when project starts to provide the proper servicing of your project.


Archived IAST Schedules

2013 IAST Protocol (PDF, 88KB, 3pp)

2012 IAST Protocol (PDF, 31KB, 4pp)

2011 IAST Protocol (PDF, 24KB, 4pp)

2010 IAST Protocol, use 2009 IAST

2009 IAST Protocol (PDF, 32KB, 4pp)

2008 IAST Protocol (PDF, 32KB, 4pp)

2007 IAST Protocol (PDF, 38KB, 7pp)