CASS® S3 M10

The CASS® S3 M10 cable barrier system assists in redirecting errant vehicles that would otherwise traverse the median of a roadway. The post employs a unique wave-shaped slot, which works in tandem with a strategically positioned, widened cable spread designed to help restrain various types of vehicles that impact the system within the Manual for Assessing Safety Hardware (MASH) crash test standards.

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  • Utilizes an S3 X 5.7 lb. LF I-Beam.
  • Four-cable, high tension system.
  • Widened cable spread from 17″ to 42″.
  • Can use standard or pre-stretched cables.
  • Top two cables positioned in unique slot and two bottom cables retained with hook bolts.
  • MASH TL-3 can be used on 4:1 or flatter slopes, roadside or median.
  • MASH TL-4 can be used on 10:1 or flatter slopes.
  • FHWA letters B-232 and B-232A.


The slot and post are designed to help lower deflections as shown in crash tests by minimizing the length of unsupported cables. CASS® S3 M10 is tested to MASH Test Level 3 and Test Level 4.

Assembly & Maintenance

  • Can be used with multiple anchor options.
  • Driven socket, driven post, or concreted socket.
  • Can use 3/4″ or 1″ fittings.
  • Pre-stretched and tensioned cables require once yearly maintenance.*
  • Cables provided in convenient preassembled 1000′ lengths (305 meters).


*After an impact, the product must be inspected and evaluated per the direction of the specifying roadway authority. The ultimate decision on reparability rests with the specifying roadway authority and/or state DOT.


  • Pre-stretched (recommended) or Standard Cables: 3/4″ (19 mm)
  • S3 x 5.7 lb. (S75 x 8.5) I-Beam
  • Post Spacing: 10.5′ (3.2 m)


Cable Heights

  • 17.4″ (442 mm)
  • 29.5″ (749 mm)
  • 38″ (965 mm)
  • 42.4″ (1,077 mm)

Product Images

Product Documents

PI Sheet

CASS® S3 M10


CASS S3 4:1 Cables Safety System Product Description Assembly Manual