Interstate Asphalt of Washington

Service · New Asphalt

Hot-mix asphalt,
laid right the first time.

Full-service asphalt paving for driveways, lots, private roads and commercial drives across Greater Seattle. Machine-laid, compacted tight, and spec'd to ride wet PNW winters and freeze-thaw without tearing itself apart.

Call (206) 776-1114 Request estimate

Overview

Asphalt Paving in the PNW.

A fresh asphalt mat should last decades, not years. The difference isn't in the color, it's in what happens below the surface. Seattle's saturated subgrade, constant rain and deep freeze-thaw cycles demand more than a thin mat on loose gravel. Every job we run gets the same treatment: measured subgrade, compacted base, crowned drainage, hand-finished edges, and a mix chosen for how pavement actually fails in Washington.

What we install

New driveway installations, residential lanes, commercial parking lots, private streets, farm drives, RV pads, and small industrial yards. From a single-car driveway up to a 200-stall anchor tenant lot, same small crew, start to finish.

How we spec Washington asphalt

Western Washington gets 150+ rain days a year. Water is the enemy of asphalt, and if your base doesn't drain, the mat on top fails early. We run thicker lifts than the cut-rate crews, compact in measured passes with the right rollers, crown the surface for shed-off, and build drainage into the design. On rural or heavy-tree properties, we also plan for moss, needle drop and root intrusion.

Ballpark pricing

New residential driveway asphalt typically runs $6 to $12 per square foot installed, depending on tear-out, base condition and access. Commercial lots drop into the $4 to $7 range on larger square footage. These are starting points, not final numbers. The written quote is always tailored to your site.

Asphalt paving crew laying hot mix in Seattle

Current Offer

$1,000 off
any paving project.

Minimum project size applies. Mention this offer when you book your free estimate.

Call (206) 776-1114 Claim the $1,000 off

FAQs

Common questions
about asphalt paving.

For most Seattle residential driveways, 3 inches of compacted hot mix over 4 to 6 inches of properly compacted aggregate base is the minimum that holds up. Commercial and heavy-use lots need more. Wet PNW subgrade often calls for a thicker base than drier climates. We'll spec the right number for your use case on the written quote.
Foot traffic is fine after 24 hours. Most homeowners can park after 48 to 72 hours in our climate, a little longer than drier regions because cool wet air slows the cure. The mat continues hardening for about 30 days. Avoid sharp steering turns while parked still during the first week.
Paving season in western Washington generally runs April through mid-October, with surface temps above about 50 degrees. We keep watching the forecast, if you get a dry window in March or late October we can sometimes squeeze in a job. We won't pave on a wet base or into standing rain, the mat will fail early.
If the old surface is failed past the point of a useful overlay, yes, we tear it out, re-grade, re-compact the base, and lay a fresh mat. If the base is still solid, an overlay buys you another 10 to 15 years for a fraction of the cost. We'll tell you straight which is right for your job.

Ready To Start

Let us quote
your asphalt paving project.

Free walkthrough, free written estimate, no pressure to book. Call or send a quick message and we'll take it from there.

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