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Mn/DOT Office of Materials
Maplewood Lab

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17th Annual TERRA Pavement Conference

The presentations and other information are currently available online.


Schedule of Materials Control

The Schedule of Materials Control outlines the minimum sampling and testing rates required for most materials used in MnDOT highway construction. It is inserted into project proposals, and is project specific.


Lab Testing & Inspections Rates

Rates Memo: MnDOT performs sampling, testing, & inspections for State, County, City, and other governmentally funded transportation projects. Other governmental agencies are required to reimburse MnDOT for this work. This is outlined in the Sampling, Testing, & Inspections Memo. (PDF 142KB).


Current Rates: (Effective May 1, 2015) for sampling, testing, & inspection are outlined in the Laboratory, Field Testing, and Inspection Rates (PDF 137KB).


Former rates through April 30, 2015 (PDF 50KB).


IAST Program

MnDOT's Schedule of Independent Assurance Sampling and Testing Protocol is used by Independent Assurance Personnel on all Federal Aid Construction Projects. The Independent Assurance Program provides a check on testing equipment and procedures for construction projects.


Independent Assurance Inspector Group

Contact the MnDOT District Independent Assurance Inspector (PDF, 17KB) when project starts to provide the proper servicing of your project.

Materials Links

Materials Manuals

Mn/DOT Resources


Directions to Mn/DOT Office of Materials


Show Google Maps page


Driving Directions

1. From downtown SAINT PAUL, MN get on I-35E North towards US-10/I-35E N. Drive for 3.8 miles.

2. Take exit number 111A to get on MN-36 East towards STILLWATER. Drive for 2.2 miles.

3. Turn LEFT onto ENGLISH STREET and go NORTH. Drive for 0.1 miles.

4. Turn RIGHT onto GERVAIS AVENUE and go EAST. Drive for 0.2 miles to reach the destination.



Map to Materials Lab




Map 3 to Materials Lab