Spring Thaw and Frozen Culverts

Across the Northwest,  the Ministry of Transportation and Infrastructure is experiencing an unprecedented amount of frozen culverts and ditch glaciation. This was precipitated by artic temperatures, minimal  insulating snow cover and ground water continuing to run during the winter.  Our frost probes are recording depths of frost much deeper than normal.

Local maintenance contractors are actively thawing cross culverts throughout the area on numerous roads and highways.  Thawing culverts is a very time consuming and challenging process.  When the warmer weather arrives it will take some time for the culverts to fully thaw and handle the increases in water volume. This may result in water pooling near our infrastructure.  Please be advised to use caution while driving and slow down while crossing these affected areas.

Driveway or access culvert maintenance is the responsibility of the landowner. This involves keeping both the inlet and outlet of the pipe free of debris so that it works properly, including removing snow and ice.

For further information on culvert maintenance responsibilities please visit:


If you have any questions please reach out to our local maintenance contractors:

Billabong Road & Bridge Maintenance



Lakes District Maintenance




Carl B. Lutz

District Manager / Bulkley-Stikine

Ministry of Transportation and Infrastructure

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