Montana Department of Transportation

Contractor Information

Design Memos

Design memos are listed by topic. They open in PDF format. Signed originals of the following memos are filed in the Helena Construction and/or Design Office.

For your convenience you may click on column heading to sort memos.

Category Title/Subject Released
Plans Preparation 11x17 Plans 04/23/2014
Miscellaneous Public Interest Finding/Certification Process 03/28/2014
Miscellaneous Geometric Design Standards for Urban & Developed Areas 03/20/2014
Grading Obliterate Roadway 03/19/2014
Hydraulics Storm Drain Drawing Revisions 02/06/2014
Erosion Control & Environmental Wetland Table 12/11/2013
Erosion Control & Environmental Guidance for the Topsoil & Seeding Summary 11/26/2013
Roadside Barrier Guardrail Post Information 10/21/2013
Miscellaneous Cattle Guard Nomenclature 10/03/2013
Hydraulics Culvert Based Bid Change 09/05/2013
Erosion Control & Environmental Erosion Control Plans Development Process 04/15/2013
Signing & Pavement Markings Type IX Sign Sheeting – Application 01/14/2013
Signing & Pavement Markings Horizontal Alignment Sign Selection 01/11/2013
Signing & Pavement Markings Durable Interim Striping 11/30/2012
Rumble Strips Rumble Strip Guidance 11/30/2012
Signing & Pavement Markings Temporary Striping 11/16/2012
Surfacing & Typical Sections Revised Rounding Criteria for Subgrade Widths 11/08/2012
Surfacing & Typical Sections Blotter 10/31/2012
Surfacing & Typical Sections Final Sweeping and Brooming 10/15/2012
Erosion Control & Environmental Temporary Erosion Control 09/12/2012
Traffic Control Traffic Control and Sequence of Operation 08/27/2012
Surfacing & Typical Sections Cement Treated Pulverized Base 05/25/2012
Surfacing & Typical Sections 30-year Pavement Design at Bridge Ends 05/24/2012
Hydraulics Cleaning Culverts and Cattle Guards 05/15/2012
Surfacing & Typical Sections Cement Treated Base
(see supplemental 05/25/12)
05/02/2012
Traffic Control Guidelines - Interstate Median Crossovers 02/28/2012
Plans Preparation Quantity Splits Revision 02/15/2012
Curbs, Ramps, and Sidewalk ADA Curb Ramp Design Requirements 02/10/2012
Signing & Pavement Markings Delineation on Non-Interstate Roadways 02/07/2012
Curbs, Ramps, and Sidewalk Sidewalk Permit - Revised 01/31/2012
Roadside Barrier Concrete Barrier Compliance 01/05/2012
Surfacing & Typical Sections Aggregate Treatment 01/03/2012
Roadside Barrier Hardware Compliance - Concrete Barrier 12/02/2011
Surfacing & Typical Sections PTW Surfacing/Subgrade Treatment 10/28/2011
Hydraulics Embankment Protectors at Bridge Ends 10/19/2011
Roadside Barrier W-Beam Guardrail Height 10/04/2011
Traffic Control Median Crossover Changes
(see update 02/28/12)
07/06/2011
Grading Mass Diagram in Blue Sheet Plans 06/30/2011
Rumble Strips Edge Line Rumble Strip Evaluation 06/14/2011
Surfacing & Typical Sections Type I and Type II Cover Material Selection 04/29/2011
Surfacing & Typical Sections Project Specific Asphalt Contents | Percent Asphalt Map 04/29/2011
Surfacing & Typical Sections Bituminous Prime
(see update "Aggregate Treatment" 01/03/12)
02/28/2011
Bridge Specifications for Concrete used in Bridges 02/08/2011
Plans Preparation Reference Posts on Title Sheet 01/13/2011
Fencing & Right-of-Way Wildlife Friendly Fence Details 12/30/2010
Curbs, Ramps, and Sidewalk Public Rights-of-Way Accessibility Guidelines (PROWAG) 11/19/2010
Signing & Pavement Markings Sign Replacement to Maintain Minimum Sign Retroreflectivity and Sign Sheeting Policy 10/06/2010
Signing & Pavement Markings Policy on Sign Sheeting Materials for Permanent Signs 09/29/2010
Surfacing & Typical Sections PTW Surfacing/Subgrade Treatment
(see update 10/28/2011)
09/23/2010
Roadside Barrier W-Beam Guardrail Height
(see update 10/04/2011)
09/13/2010
Plans Preparation Scales on Title Sheet 08/27/2010
Hydraulics Reinforced Concrete Box - Steel Pipe Options 08/24/2010
Curbs, Ramps, and Sidewalk Public Rights-of-Way Accessibility Guidelines (PROWAG) Adopted | Guidelines 08/17/2010
Hydraulics New RCP Fill Height Tables 08/13/2010
Hydraulics Culverts - Abandon in Place 06/25/2010
Grading Shrink/Swell Factors in Grading Frames 03/24/2010
Roadside Barrier Guardrail End Section Widening - Modification 02/10/2010
Surfacing & Typical Sections Bituminous Prime
(see update 02/28/11)
01/15/2010
Grading Balanced Earthwork 01/13/2010
Erosion Control & Environmental Erosion Control Blanket and Turf Reinforcement Mat 12/17/2009
Erosion Control & Environmental Furrow Ditches - Clarification 12/17/2009
Bridge Concrete Deck, Assumed Sacrificial Wearing Surface and Concrete Strength 12/02/2009
Erosion Control & Environmental Furrow Ditches
(see supplemental 12/17/09)
11/30/2009
Plans Preparation Significant Figures in Road Plans 11/12/2009
Roadside Barrier Concrete Barrier Installation - Clarification 11/12/2009
Roadside Barrier Concrete Barrier Installation
(see supplemental 11/12/09)
10/20/2009
Miscellaneous Type B Scale Sites 09/14/2009
Surfacing & Typical Sections Widening for Future Paving 04/16/2009
Miscellaneous Electrical Special Provisions 03/26/2009
Surfacing & Typical Sections Recycled Surfacing Options 03/16/2009
Surfacing & Typical Sections Use of Cold Millings in Federal-Aid Projects 03/10/2009
Hydraulics Special Culvert Installation Guidelines | Details 02/20/2009
Surfacing & Typical Sections Roadway Width Decision Process
(also see Design Guidelines 08/05/2008)
02/13/2009
Surfacing & Typical Sections Modified Surfacing Design Requirements 02/09/2009
Surfacing & Typical Sections Application Rate - Seal (CRS-2P) 01/12/2009
Roadside Barrier Guardrail End Section Widening
(see update 02/10/10)
11/26/2008
Surfacing & Typical Sections Fog Seal and Isolation Lifts 10/06/2008
Grading Mass Diagram and Grading Frames 08/19/2008
Miscellaneous Design Guidelines
(see supplemental 02/13/09)
08/05/2008
Grading Mass Diagrams
(see supplemental 08/19/08 and update 06/30/11)
07/07/2008
Surfacing & Typical Sections Plant Mix and Aggregate Treatment 06/11/2008
Miscellaneous Contract Time Calculation Procedures 06/03/2008
Curbs, Ramps, and Sidewalk Curb Dimensions 04/30/2008
Miscellaneous Specialty Items 04/25/2008
Surfacing & Typical Sections Chip Seal Policy 03/18/2008
Surfacing & Typical Sections Aggregate Treatment 02/28/2008
Surfacing & Typical Sections Tack and Aggregate Tack Quantities 01/08/2008
Surfacing & Typical Sections Fog Seal
(see update 10/06/08)
12/28/2007
Grading Haul Quantities 12/21/2007
Miscellaneous Worker Visibility 11/16/2007
Plans Preparation Urban-Rural Lengths of Roadways 09/25/2007
Hydraulics Alternative Culvert Pipe Material Selection Guidelines 06/12/2007
Fencing & Right-of-Way Wildlife Fence Issues 04/06/2007
Surfacing & Typical Sections Road Design Manual - Chapter 9: Superelevation 01/08/2007
Plans Preparation Project Limits 01/05/2007
Plans Preparation Horizontal Curve Data 11/29/2006
Grading Embankment-in-Place 11/27/2006
Grading Culvert Excavation - Clarification 11/27/2006
Grading Culvert Excavation 11/17/2006
Miscellaneous Special Provisions Format 07/31/2006
Signing & Pavement Markings Pavement Marking Quantities
(see supplemental 11/30/12)
07/20/2006
Surfacing & Typical Sections Revised Surfacing Structural Coefficients and Layer Thicknesses 05/11/2006
Curbs, Ramps, and Sidewalk Median Concrete Curb - Type B 04/18/2006
Fencing & Right-of-Way MDT Fencing Policy and Procedure (Non-Interstate) 04/10/2006
Plans Preparation Summary Subtotals 04/06/2006
Signing & Pavement Markings Temporary Pavement Markings 03/23/2006
Surfacing & Typical Sections 1/2 in (12.5 mm) Plant Mix Surfacing 01/04/2006
Surfacing & Typical Sections Isolation Lifts 12/14/2005
Plans Preparation Quantity Splits Reference Guide for Designers 11/04/2005
Plans Preparation Quantity Splits
(see supplemental 11/04/05)
10/14/2005
Fencing & Right-of-Way Retracement Surveys - a guideline for RW Plans 08/11/2005
Surfacing & Typical Sections Isolation Lifts and Tack
(see supplemental 12/14/05)
06/29/2005
Hydraulics Guidelines for Hydraulic Report Data as Requested by the DFWP 05/18/2005
Surfacing & Typical Sections Surfacing Design Guidelines 04/07/2005
Hydraulics Hydraulic Reports 04/05/2005
Fencing & Right-of-Way Access to Bridges 02/14/2005
Plans Preparation Title Sheet - Design Data 01/07/2005
Roadside Barrier W-Beam Guardrail Reassessment of the BCT 07/12/2004
Surfacing & Typical Sections Cover Material Revision and Asphalt Cement Quantities 06/29/2004
Rumble Strips Rumble Strip Policy Revision
(see revision 11/30/12)
06/29/2004
Hydraulics DEQ Storm Drain/Water Main Requirements 06/15/2004
Surfacing & Typical Sections Widening Projects - Vertical Notch 04/12/2004
Hydraulics Water Resources Investigations Report 03-4308: USGS - Methods for Estimating Flood Frequency in Montana Based on Data through Water Year 1998 03/29/2004
Signing & Pavement Markings Temporary Pavement Markings 01/16/2004
Bridge Salvaged Bridge Material 09/30/2003
Hydraulics Pipe Cleaning 09/05/2003
Bridge Vertical Clearance Railroad Separations 06/19/2003
Fencing & Right-of-Way R/W Bureau Red Line Process 12/05/2002
Bridge Structure Excavation on End Bents as a Pay Item 10/03/2000