Products / Ground Protection

Interlocking Access Mat

Name: Interlocking Access Mat
Brand: SIGMA
SKU: interlocking-access-mat

A cam-lock interlocking access mat whose overlapping flanges and twist-lock pins create a continuous, shift-free roadway over uneven, soft ground. It locks together with a simple hex key, and sealed joints stop mud pumping to the surface.

4×8–7.5×14 ftto 4 inhex cam-lock

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A locked surface that will not shift

The interlocking access mat solves a problem construction access mats and site access mats share: mats creeping apart under traffic. Overlapping flanges and twist-lock pins tie each mat to its neighbours, so a run behaves like one continuous surface instead of a row of separate boards that hop and separate as wheels cross the joints.

Tool-light assembly

Mats lock together with a simple hex key — no loose hardware to drop in the mud and lose. The same system that speeds installation speeds lifting at the end of the job, and the sealed joints stop mud pumping up between mats, which is what turns a tidy temporary road into a mess after a week of rain.

Sizing and ground

Available from 4×8 ft up to 7.5×14 ft and 1/2–4 in thick, these composite access mats let you match the mat to the load and the softness of the ground. The quoted figures — up to ~120 t spread and ~600 psi point — assume a competent sub-grade; for heavier point loads use a heavy-duty ground protection mat, and over very soft ground move to an extra-heavy bog mat.

Where it is used

Temporary haul roads, works-and-pedestrian separation, and pipeline right-of-way — anywhere a connected, shift-free surface matters more than the speed of a loose lay. The interlock is the feature you pay for, and it earns its keep on longer runs and repeated traffic — match it to load using ground protection mat load ratings.

Manufacturing

Key features

Hex-key cam-locks — no loose hardware
Interlock resists hopping under rolling loads

Ideal for

Temporary haul roads
Works/pedestrian separation
Pipeline right-of-way

Specifications

Size	4×8 ft to 7.5×14 ft
Thickness	1/2–4 in
Load	up to ~120 t spread · ~600 psi point
Joint	Moulded cam-locks + pins
Material	HDPE / composite
Color	Black / beige

Quoted load figures assume a competent, evenly prepared sub-grade. A mat spreads and distributes load — it does not turn soft ground into hard standing — so size to ground bearing pressure (load ÷ contact area).

Frequently asked questions

How does an interlocking access mat stay connected under traffic?

Overlapping flanges and twist-lock pins tie each mat to its neighbours with a simple hex key — no loose hardware to drop in the mud. The locked run behaves like one continuous surface instead of separate boards that hop and separate as wheels cross the joints, and sealed joints stop mud pumping up between panels.

What sizes does the interlocking access mat come in?

From 4×8 ft up to 7.5×14 ft, in 1/2–4 in thickness, so you match the mat to the load and the ground. Quoted figures run up to ~120 t spread and ~600 psi point on a competent sub-grade; for heavier point loads step up to the heavy-duty mat, and over very soft ground move to the extra-heavy bog mat.