Asphalt Paving in Montesano, WA

Asphalt paving in Montesano has to handle slopes and a great deal of rain. Montesano sits on the north slope of the Chehalis River valley, near where the Wynoochee River joins it, and Lake Sylvia borders the town to the north. Wikipedia lists its average annual precipitation at 120.8 inches. Even if you discount that figure, this is one of the wettest places we work. The town incorporated on November 26, 1883, became the Grays Harbor County seat in 1886, and counted 4,138 residents in 2020.

Slopes and runoff

On a hillside lot, water runs down the driveway. Without grading to guide it off the surface, it cuts along the edges and gets under the asphalt. We set the cross slope to move water into lawns, swales or ditches, compact the base in layers, and support the edges so they hold. On steep sections, we place and roll asphalt quickly before it cools.

Building for heavy rain

We dig out soft or organic soil, use a thicker crushed rock base where the ground stays wet, and recommend redirecting downspouts that empty onto pavement. Crack sealing and sealcoating in the driest part of summer keep water out of the surface.

Courthouse town

The 1911 Grays Harbor County Courthouse, a three-story building with a domed tower, anchors downtown. Older homes nearby often have narrow, patched driveways. Businesses and public buildings need lots that drain well and have clear striping.

Permits

If your project changes a driveway approach in the street right-of-way, check with the City of Montesano or Grays Harbor County first. We raise it at the estimate.

Timing

The paving window here is short. We schedule for the driest summer weeks and allow for weather delays.

Common Montesano repairs

The most common jobs we see on hillside lots are edges that have washed out, sections near the garage that have settled, and cracks running down the slope where water follows the same path every storm. Each has a different fix, and we explain which applies when we visit.

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