Minnesota Department of Transportation

511 Travel Info

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.

Submit ideas for Topics for Tech Transfer (Newsletter, Research Pays Off, Videos, Pavement Workshop)

Current Projects and Resources

Phase 2 Research

  1. Mechanistic Load Restriction Decision Platform for Pavement Systems Prone to Moisture Variations
  2. Environmental Impacts on the Performance of Pavement Foundation Layers
  3. Permeability of Base Aggregate and Sand
  4. Improve material inputs into mechanistic design properties for reclaimed HMA Roadways

Tech Transfer

  1. Larger Subbase Materials
  2. Subgrade Design for New and Reconstructed
  3. Research Pays Off--Validated Intelligent Compaction Testing at MnROAD, Ingios Geotechnics (video, webinar)

Long Term Research

  1. Determining Pavement Design Criteria for Recycled Aggregate Base and Large Stone Subbase

Reports for Reference

Unbound Intelligent Compaction Partnerships

Specifications and Manuals

California DOT
Illinois DOT
Michigan 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

Meeting Notes/Action Items

Meetings are held the first Thursday of every month, 12:30 p.m. – 1:30 p.m. Note that meeting dates/times may change depending on member schedules and holidays.