Sacking Sand

A combination truck greatly simplifies interstate highway culvert cleaning for work crews from the Colorado DOT

Culverts clogged with sand along I-70 used to be a big problem for the Colorado Department of Transportation (CDOT). Today, work crews clear them easily with a bright orange HV-56 Series combination truck, made by GapVax Inc.

With a 14-cubic-yard debris tank, 1,200-gallon water...

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