Longitudinal Barriers Products
New and full-replacement installations must use MASH-compliant systems.
MASH High-Tension Cable Barrier
Proprietary MASH high-tension cable barrier (HTCB) systems are engineered systems subject to MnDOT’s Approved/Qualified Products Policy.
| Product | Manufacturer | Approval Date | Notes |
|---|---|---|---|
| MASH 2016 Cable System | Gibraltar Global | March 17, 2025 | Approved for 1V:4H or flatter cross slope. |
| O-Post 4 Rope System | Brifen USA | March 17, 2025 | Approved for 1V:6H or flatter median slope and 1V:4H or flatter outside roadside slope. |
Qualified Foundation Designs for HTCB
HTCB systems must employ qualified anchor, terminal post, and line post foundation designs compatible with the HTCB system and site-specific soil information from the Soils Data Report. See the Guidance section of this page for the Qualification Requirements for HTCB Foundations (PDF). Foundation designs that have already been evaluated as meeting the qualification requirements are listed in the Qualified Foundation Designs table, below. Additionalfoundation designs may be available from the manufacturer but require qualification before use.
| Name (See links for drawings and specifications.) |
Compatible System(s) | Foundation Type | Qualification Date | Minimum Soil Properties | Other Restrictions, if Applicable |
|---|---|---|---|---|---|
| 11′-6″ Anchor Block" to "11′-6″ Anchor Block, TP4-1 Terminal Post Footing, and TP4-4 Line Post Footing | Gibraltar MASH 2016 Cable System |
Anchor, Terminal Post and Line Post | 10/15/2025 | Cohesive Soils: |
N/A |
| 10'-0" Anchor Block, Post A, and Line Post Driven Socket | Brifen WRSF NCHRP 350 | Anchor, Terminal Post and Line Post | 4/15/2026 | Cohesive Soils: |
N/A |
NCHRP 350 High-Tension Cable Barrier
NCHRP 350 systems are available only for maintenance, partial reassembly of existing barriers, or projects let prior to March 17, 2025.
| Product | Manufacturer | Approval Date |
|---|---|---|
| Brifen TL-4 (4-Rope) WRSF | Brifen | 8/22/2012 |
| Gibraltar TL-4-4-Cable Barrier System | Gibraltar | 8/22/2012 |
Composite/Plastic Block-outs
Installer shall assume all responsibility for proper application and adherence to the manufacturer's installation instructions.
| Manufacturer | FHWA Eligibility Letter 8” Block Depth NCHRP 350 (Product may be used on in-place NCHRP 350 systems requiring replacement or maintenance.) |
FHWA Eligibility Letter 8” Block Depth MASH |
FHWA Eligibility Letter 12” Block Depth MASH |
Approval Date |
|---|---|---|---|---|
| Mondo Polymer Technologies | B-39B | B-39D B-278A |
B-39C | 10/11/2019 |
| Valtir, LLC | B-85E | - | - | 11/9/2016 |
| Valtir, LLC | - | B-342 | B-353 | 12/23/2021 |