Roadway Design

Standards and Guidelines

Barrier Design Information

The barrier design information on this page is used in conjunction with the Roadway Design Construction Standard Drawings (C-Stds), the Roadway Design Guidelines and the Roadway Design Memorandums.

It is the responsibility of the user to use the most current standards for design.

Memos and Forms

Design Information and Documents

Guardrail End Treatments

Guardrail End Terminal Layout Details
  • X8041: Layout for SRT-350, HBA Posts (AC Pavement) (May 16, 2011) 
  • Y1042: Layout for FLEAT-350 (June 6, 2011)
  • See Construction Standard Drawings for additional End Terminal Layouts
Guardrail End Treatments
  •  FLT-W-US-AZ - FLEAT 35 (June 4, 2011)
    • Flared Energy Absorbing Terminal, (FLT-US, 1-1)
    • Assembly (6'-3" Post Spacing) for Wood Breakaway Post System (Supersedes Nov. 26, 2002, drawing)
  • SS-355 - SRT-350 (May 16, 2011)
    • (12.5' Panels, HBA Posts) Slotted Rail Terminal SRT-350 Erection Details (12.5' Panels, HBA Posts) - Arizona (Supersedes Jan. 10, 2003, drawing)
  • SS 646 SoftStop Tangent Terminal MASH TL-3  (Steel Posts, 8” Blockouts) (11/14/2012)
  • MSKT-SP-MGS8 MSKT Tangent Terminal MASH TL-3  (Steel posts, 8” Blockouts) (05/20/2017)
  • MT3SIS8C4 Max-Tension Tangent Terminal MASH TL-3  (Steel Posts, 8” Blockouts (03/10/17)

Historical Guardrail End Treatments

Historical guardrail end treatments are provided for maintenance of existing guardrail. Current guardrail end treatments are located in the tab above this one.

ET-PLUS
  • S-354
    • ET-PLUS 50'- 0" Plan, Elevation & Section, ARIZONA. NCHRP 350 Test Level 3, with 12'-6" Rails, 2 Post Sleeves without soil plate, and Angle Strut. Revised Oct. 25, 2002 to include concrete pad option. Superseded Jan. 10, 2003 by SS-358 and SS-359. This installation remains acceptable for maintenance.
  • SS-358 - ET-PLUS (May 16, 2011)
    • ET-PLUS Asphaltic Concrete Installation: 50' With 12'-6" Rail Panels and HBA Posts 1 and 2: Plan, Elevation and Section (Supersedes 06/30/06 and 01/23/03 drawings).
  • SS-359
    • ET-PLUS Concrete Pavement Installation - 50' With 12'-6" Rails and 8 Post Sleeves: Plan, Elevation and Section (Sept. 30, 2003). Superceded by drawing SS-409. This installation remains acceptable for maintenance.
  • SS-409 ET-PLUS (Sept. 20, 2007)
    • ET-PLUS Concrete Pavement Installation: 50' (Arizona) With 12'-6" Panels, 7 SYTP Posts in Tube Sleeves and 1 HBA Post on Concrete with "Leaveouts."
ET-2000 PLUS (Superceded by ET-PLUS)
  • SS-171
    • ET-2000 PLUS Plan, Elevation and Section. NCHRP 350 Test Level 3. With 12'-6" Rails and 2 Post Sleeves. Superseded by drawing SS-334 with revised Strut Assembly. This installation remains acceptable for maintenance.
ET-2000 LET
  • SS-260
    • ET2000-LET Plan, Elevation & Sections, Rev. 1. Superceded by ET-2000 PLUS
ET-2000
  • SS-241
    • ET-2000, Plan, Elevation & Sections, Option B, Rev. 1, Sheet 1 of 1. Superseded by ET-2000 LET, February 1996
  • SS-244
    • ET-2000, Option B Only Details, Rev. 2, Sheet 2 of 2
SRT Series
SRT Series (8 Post System)
  • SS-444
    • Slotted Rail Terminal Post Layout and Erection Details SRT-350. Superseded by 7 Post System (SS-355), May 22, 2002. This installation remains acceptable for maintenance.
SRT 350 (9 Post System)
  • SS-428
    • Slotted Rail Terminal SRT-350 Post Layout and Erection Details, (25', 9 Post) Rev. 2. Superseded by 8 Post System. This installation remains acceptable for maintenance.
FLEAT Series
FLEAT-350, Flared Energy Absorbing Terminal (FLT-US 1-1)
  • FLT-W-US
    • Assembly (6'-3" Post Spacing) for Wood Breakaway Post System (Revised July 17, 2002)
  • FLT-US
    • Assembly: Superseded by FLT-W-US with 6'-3" Post Spacing. Post Spacing on FLT-US is still acceptable.
SKT Series
SKT-350 Sequential Kinking Terminal
  • SKT-S-8US-AZ - LEAVEOUT - SKT-350 (Sept. 20, 2007)
    • Sequential Kinking Terminal
    • Concrete Pavement Application, Plug-Weld Steel Posts in Foundation Tubes
    • Superseded by drawing MSKT-SP-MGS8. This installation remains acceptable for maintenance.
  • SKT-W-2US-AZ - SKT-350 (June 4, 2011)
    • Sequential Kinking Terminal 
    • Asphaltic Concrete Pavement Application, Assembly, 2 Foundation Tube Option, Wood Posts (Supersedes Nov. 26, 2002, drawings)
    • Superseded by drawing MSKT-SP-MGS8. This installation remains acceptable for maintenance.
  • SKT-W-8US-AZ Leaveout
    • Concrete Pavement Application, 8 Foundation Tubes, Sept. 30, 2003. This drawing superseded by drawing SKT-S-8US-AZ LEAVEOUT. This installation remains acceptable for maintenance.
  • SKT-2US
    • Assembly, 2 Foundation Tube Option: Superseded by SKT-W-2US
Arizona State Logo - Official Website of the State of Arizona

 ADOT Logo

Arizona Department of Transportation

Contact Us

Join the ADOT Team - Employment Opportunities