Local agencies struggle with frost dips and heaves that develop over newly installed centerline culverts. The Local Road Research Board has developed a quick reference guide for local agencies to identify the cause of their frost dips and provide recommendations for mitigation.
Over the past years, the LRRB has developed several resources to address and mitigate issues associated with seasonal movement (heaving and depressions). The quick guide, which synthesizes several earlier resources, specifically address seasonal movements at culverts and utilities.
- Factors/conditions causing seasonal movement
- Susceptible soils
- Potential issues/evaluation
- Mitigation construction practices
- Utility trench treatment
- MnDOT standards
Quick Reference Guide
Mitigating Seasonal Movements at Culverts (2021RIC01) (pdf)
Transportation Research Synthesis: Mitigating Frost Dips Over Newly Installed Centerline Culverts (pdf)