
Tri-Lock is a permeable, flexible, interlocking concrete erosion control system that provides a high level of hydraulic stability and erosion control in both open channel flows and waves.
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Tri-Lock is available in several sizes and thicknesses to accommodate a wide range of hydraulic conditions.
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Tri-Lock does not require cables and may be hand-placed. For underwater or machine placement, Tri-Lock may be cabled onsite or delivered as mats.
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Tri-Lock has a unique three-directional interlocking geometry that allows it to traverse changes in terrain and be placed around corners without disrupting the placement pattern or using seams.
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Tri-Lock may be backfilled with crushed rock to provide a durable surface or backfilled with soil and vegetated to provide a more natural appearance.

Before

Installation

After
Tri-Lock Applications
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Erosion control in streams, rivers, and lakes
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Levee and reservoir embankment protection
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Slope protection
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Channel lining
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Overflow and drop structures
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Culvert inlets and outfall protection
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Shoreline protection from waves and wakes
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Pipeline watercourse crossing protection
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Bridge apron and pier scour protection
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Boat launching ramps
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Parking areas and light traffic roadways