Roadway Engineering

Roadway Design Standards and Guidelines

Guardrail, Barrier and Transition Design Information

The guardrail 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
  • X10401: Layout for SKT-350, 2 Foundation Soil Tubes (AC Pavement), Sheet 1 of 2 (June 6, 2011)
  • X10402: Layout for SKT-350, 2 Foundation Soil Tubes (AC Pavement), Sheet 2 of 2 (June 6, 2011)
  • X10411: Layout for SKT-350, 8 Foundation Soil Tubes (PCCP, With Curb), Sheet 1 of 2 (June 6, 2011)
  • X10412: Layout for SKT-350, 8 Foundation Soil Tubes (PCCP, With Curb), Sheet 2 of 2 (June 6, 2011)
  • X8041: Layout for SRT-350, HBA Posts (AC Pavement) (May 16, 2011)
  • X8141: Layout for SRT-350 (8 Post System), 2 Tube Sleeves (FOR MAINTENANCE REFERENCE ONLY) (Feb. 15, 2011)
  • Y11401: Layout for Tangent X-LITE, (AC Pavement), Sheet 1 of 2 (Dec.12, 2014)
  • Y11402: Layout for Tangent X-LITE, (AC Pavement), Sheet 2 of 2 (Dec.12, 2014)
  • Y11411: Layout for Tangent X-LITE, (PCCP, With Curb), Sheet 1 of 2 (Dec.12, 2014)
  • Y11412: Layout for Tangent X-LITE, (PCCP, With Curb), Sheet 2 of 2 (Dec.12, 2014)
  • Y1042: Layout for FLEAT-350 (June 6, 2011)
Guardrail End Treatments
  • XLTSUS–50 - X-LITE (Dec. 12, 2014)
    • X-LITE SYSTEM TANGENT, 50 FT
  • 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)
  • SKT-S-8US-AZ - LEAVEOUT - SKT-350 (Sept. 20, 2007)
    • Sequential Kinking Terminal
    • Concrete Pavement Application, Plug-Weld Steel Posts in Foundation Tubes
  • 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)
  • 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)

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-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.
    • Assembly, 2 Foundation Tube Option: Superseded by SKT-W-2US

Concrete Barrier and Transitions

Concrete Barrier Design Memorandums
Drawings
  • X10751 - Barrier Transition 32" Type 'F' Low Speed Approach (Oct. 30, 2006)
  • X10753 - Barrier Transition 42" Type 'F' Tangent Departure (Oct. 30, 2006)
  • X10901 - Median Barrier 42" Type 'F' With Variable Height Sides, H = 0" to 2'-2", Sheet 1 of 2 (Dec. 6, 2010)
  • X10902 - Median Barrier 42" Type 'F' With Variable Height Sides, H = 0" to 2'-2", Sheet 2 of 2 (Dec. 6, 2010)
  • X11901 - Median Barrier 42" Type 'F' With Variable Height Sides, H = 2'-2" to 5'-0", Sheet 1 of 2 (March 16, 2011)
  • X11902 - Median Barrier 42" Type 'F' With Variable Height Sides, H = 2'-2" to 5'-0", Sheet 2 of 2 (March 16, 2011)

Crash Attenuators Proprietary Information

Information on crash attenuators listed below should be used in conjunction with the Roadway Design Construction Standards (C-Stds).

NCHRP 350 and PRIDE Program Approved

(For permanent use: test Level 3 unless otherwise noted.)

QuadGuard Family
  • QuadGuard - 24”, 30”, and 36”
  • QuadGuard Wide - 69” and 90”
  • QuadGuard LMC
  • QuadGuard LMC Wide 69/90
SCI Products, Inc.
  • SCI100GM
Universal TAU II Family
ADIEM 350
TRACC Family
  • Note: All TRACC systems with modular base only.
  • SHORTRACC: Test Level 2
  • WIDETRACC
  • FASTRACC: Approval of Assistant State Engineer, Roadway Engineering Group required.
REACT 350 Energy Absorption, Inc.
  • REACT 350-4 Test Level 2
  • REACT 350-6
  • REACT 350-9 Test Level 3