Minnesota Department of Transportation

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Road Research

NRRA Geotechnical Team

Orange barrels on a highway

Geotechnical Team

The geotechnical team is comprised of technical experts in the area of unbound and bound materials found under the pavement surface. This includes grading and base, full depth reclamation, cold in place recycling for new and rehabilitation of roadways. Activities include prioritization of short and long term research, development of long term research test sections at MnROAD, and providing input to the technology transfer team on what should be marketed.

Current Projects and Resources

Team Research Development

Tech Transfer Write-ups

  1. Larger Subbase Materials - Draft December 6th (WORD)
  2. Subgrade Design for New and Reconstructed - Draft August 5th (WORD)

Long Term Research Write-ups

  1. Recycled Aggregate Base and Large Subbase - 6/14/2017 (Word)
Reports for Reference

Specifications and Special Provisions

California DOT
Illinois DOT
Minnesota DOT
Missouri DOT
Wisconsin DOT

Pavement Design Procedures

Illinois DOT
Minnesota DOT
Missouri DOT
  • AASHTO Pavement ME
Wisconsin DOT

Facilities Development Manual - Chapter 14 (PDF)

  • Note: New pavement designs and pavement replacements on interstate, US and state highways are designed using AASHTOWare Pavement ME Design, Version 2.1.  Local road pavement designs are based on AASHTO ’72.

QA/QC Requirements

Terms and Definitions

MnROAD Test Cell - Monitoring and Costs

Cell Maps

Topics (Newsletter, Research Pays Off, videos)