Arvada Curb and Gutter Contractors

The interesting part of a curb job is not the pour. It is the trench. Once the broken run is loaded out and you are looking at bare ground, you find out what you bought: dry base that rings under a boot, dark saturated fines that squelch, or a soft channel where water has been running under the curb for years, quietly carrying material away.

We build and replace curb and gutter for commercial, industrial, and association property across Arvada, and we bid the dirt as seriously as the concrete. A curb is a shallow structure on a narrow strip of ground with water pouring down it. Everything that goes wrong with one goes wrong from underneath.

What is actually holding your curb up

A gutter pan is a few inches thick and a curb face is a thin vertical fin. Neither has the mass to bridge anything. So when a section drops, tips, or cracks in a straight line, the concrete did not fail. The ground under it moved and the concrete followed.

Three things move that ground. Water is the biggest: it comes down the pan by design, and any gap in a joint sends some of it into the base instead of to the inlet. Second is the back side, which nobody thinks about. Irrigation, roof drainage, and landscape grading push moisture into the fill behind the curb, and saturated fill stops holding the back of your gutter up. Third is what the site was built on. Newer commercial pads and association infrastructure out by Candelas, Leyden Rock, and Whisper Creek sit on engineered fill, but the last few feet at the edge of a pad get the least attention during grading, and curb lives exactly there.

Older frontage tells a different story. Around Olde Town and the established parcels near West Woods, curb often predates the pavement in front of it and sits on whatever was there at the time. Cinder, sand, buried asphalt, old trench spoil. Those runs get rebuilt from the ground up or they come back.

Ground conditions we hit, and how the curb spec changes

What happens in the trench before any concrete shows up

• Flow line shot end to end so we know where the water was supposed to go and where it stopped going there
• Excavation past the visible failure until we hit material that holds
• Any water source found and corrected: cracked pan, blown joint, downspout discharge, irrigation lateral
• Clean road base placed in lifts and compacted, carried past the back of curb rather than stopping at it
• Forms set to the corrected grade and checked with an instrument, not by eye down the run
• Backfill behind the curb graded to shed water away from the new work

Timing curb work around Front Range ground conditions

The window we like runs from full thaw through the middle of fall, and that is about the trench rather than the concrete. Frozen subgrade cannot be compacted or evaluated, and saturated spring ground reads soft everywhere, so you either over-dig for no reason or get fooled by ground that firms up in June. Late spring and early fall give us honest dirt.

Winter curb happens, usually because a plow took out a run in February and somebody is looking at exposed steel in a drive aisle. We can form and place small sections cold with heated mix water, a non-chloride accelerator, and blankets left on longer than anyone wants. What we will not do is compact frozen material and call it base. If the frost is deep, we make the area safe, get you through the season, and rebuild it properly in the spring.

Two other notes. Keep the first winter chemical free, since a thin curb section has more exposed surface per unit of concrete than any flatwork you own. And schedule curb ahead of paving and striping, never after, because the curb sets the grade the pavement ties into.