MASH Information
Frequently Asked Questions
If you have any questions about the resources on this page, please contact a Montana Highway Barrier Mentor.
National Implementation
AASHTO Committee on Design
AASHTO/FHWA Joint Implementation Agreement for MASH
Modification to Joint Implementation Agreement
FHWA Office of Safety
Guardrail Resources
Hardware Eligibility Letters
Roadside Hardware Policy Memoranda and Guidance
Helpful Links
Pooled Fund Programs
Roadside Safety Pooled Fund Program
Midwest Roadside Safety Facility
MDT Guardrail Systems
Approved Proprietary Systems
“W” Beam Guardrail System
Interim Guidance
Design Memo – MASH Guardrail Implementation Guide
Detailed Drawings – Section 606
Crash Cushions
Cable Guardrail System
Interim Guidance
Detailed Drawings – Section 606
Box Beam Guardrail System
Interim Guidance
Detailed Drawings – Section 606
Concrete Barrier Rail
Interim Guidance
Detailed Drawings – Section 605
Bridge Barrier Rail
Design References and Training
Design References
MDT Road Design Manual – Ch. 9 Roadside Safety
Guidelines for Nomination and Development of Pavement Projects
Training
MASH Guardrail Implementation (2018 Preconstruction Conference Presentation) PowerPoint | PDF
FAST Act – Highway Barrier Design Training (2018)
Designer Introduction – Participant Notebook
Designer Session 1 – Introduction and Pre-assessment
Designer Session 2 – Clear Zone and Guidelines for Barrier Need
Designer Session 3 – Barrier Systems
Designer Session 4 – Performance Characteristics of Terminals
Designer Session 5 – Design Principles
Designer Session 6 – Length of Need and Special Considerations
Designer Session 7 – Design Workshop
Designer Workshop Solutions
FAST Act – Highway Barrier Inspector Training (2018)
Inspector Introduction – Participant Notebook
Inspector Session 1 – Roadside Safety Problem
Inspector Session 2 – Barrier Systems
Inspector Session 3 – Performance Characteristics of Terminals
Inspector Session 4 – Guardrail Design
Inspector Session 5 – Installation/Common Errors of System
Inspector Session 6 – Maintenance of Systems