Roadway Design Memorandums
Roadway Design Memorandums
The Roadway Design Memorandums listed below should be used in conjunction with current Roadway Design Standards.
It is the responsibility of the user to use the most current standards for design.
Current Roadway Design Memorandums
- Revised Standard Drawing C-13.15 (August 2023)
- Plastic Pipe Selection Guidelines (March 2022)
- February 2022 Revisions to the 2021 Roadway Design Guidelines (February 2022)
- ADOT Plans Face Sheet Revision (February 2022)
- CADD Standards and Software for ADOT Administered Projects(January 2022)
- Revised Standard Drawing C-07.06 (August 2021)
- SGET Tangent Guardrail End Terminal (May 2021)
- 2021 Edition of the Roadway Design Guidelines (Jan 2021)
- Revised Pipe Specifications and Standard Drawing(Jan. 2020)
- MASH Cable Barrier Guidance(Jan. 2020)
- Flared Guardrail End Terminal Guidance(Nov. 2019)
- Americans with Disabilities Act Design Standard Memo(Sept. 24, 2019)
- Revised Guardrail End Terminal Pad Layout Standard Drawings(April 12, 2019)
- Crash Cushion Selection Procedure(Dec. 19, 2018)
- MAX-Tension Tangent Guardrail End Terminal(May 3, 2018)
- Roadway Design Memorandum Turnout Paving in PM10 Non-Attainment Areas(Nov. 3, 2017)
- Implementation of MASH Barrier(Feb. 22, 2018)
- Existing Roadway Barrier Assessment(May 3, 2017)
- 2012 Edition of the Construction Standard Drawings(June 20, 2012)
- ACFC Termini Treatment (May 14, 2012)
- Reinforced Concrete Box Culverts (March 26, 2012)
- Shoulder Build-up Design Guidelines (Aug. 30, 2011)
- 2 Ft. Offset Distance to Roadside Barriers (Aug. 18, 2005)
- Breakaway Cable Terminals (BCT's) Design Memo (Oct. 2, 1998)
- Safety End Sections (May 12, 1998)
- Climbing and Passing Lane Policy (Dec. 23, 1997)
- Low Speed Approach Barrier Transition (Aug. 28, 1996)
Historical Roadway Design Memorandums
The historical Roadway Design Memorandums shown below are available as a reference for maintenance activities. The most current Roadway Design Memorandums can be found above.
- Crash Cushion Selection Procedure Design Memo (July 9, 2009)
- Roadway Design Guidelines 2007 Update Memo (Historical; May 21, 2007)
- Construction Standard Drawings Update Memo - 2006 (Historical; April 18, 2006)
- Sidewalk Ramps Memo - 2005 (Historical; Nov. 25, 2005)
- Construction Standards Update Memo - 2005 (Historical; July 29, 2005)
- Constructions Standards Update Memo - 2004 (Historical; Oct. 20, 2004)
- ET-PLUS Guardrail End Treatment - Modification to Breakaway End Posts (Jan. 10, 2003)
- Barrier Summary Sheets - Guardrail End Treatments Design Memo (June 27, 2002)
- Guardrail to Bridge Rail Transitions (Amended Procedure Step 8 on 8/8/02) Design Memo (June 25, 2002)
- SRT-350 Guardrail End Treatment Modification to Breakaway End Post and Straight Flare Design Memo (May 6, 2002)
- Guardrail Minimum Height after Overlay on Pavement Preservation Projects Design Memo (Aug. 7, 2001)
- SKT 350 Design Memo (June 4, 1999)
- FLEAT 350 Design Memo (Oct. 6, 1998)
- ADIEM 350 Crash Cushion (April 29, 1998)
- QuadGuard Wide and NEAT Attenuator (Jan. 22, 1998)