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Brynion Excavation installs Ultra Block retaining walls for residential and commercial properties throughout Kelso, WA and neighboring communities like Longview and Castle Rock. Ultra Block is a premium interlocking modular concrete system — the uniform block face, engineered batter, and interlocking pin design give these walls a polished appearance without sacrificing structural strength. Whether you need a decorative garden wall, a tiered landscape feature, or a load-bearing commercial retaining structure, the system scales to the job. Brynion Excavation handles the full installation from site survey and base preparation through final cap course placement.
(360) 485-6579
A properly built Ultra Block wall starts with a compacted aggregate base at the right depth for your soil type and wall height. Each course is set with precise batter — the slight backward lean engineered into the block system — to distribute lateral earth pressure over the full wall face. Geogrid reinforcement is incorporated into taller walls to anchor back into the hillside and prevent rotation. Our crews work with these interlocking systems daily and understand how local SW Washington soils, clay content, and seasonal moisture cycles affect long-term wall performance in Kelso, WA and surrounding areas.
(360) 485-6579
Brynion Excavation has over 15 years of retaining wall and earthwork experience in Kelso, WA. We assess drainage conditions before every install — inadequate drainage behind the wall is the leading cause of early failure, so we integrate crushed rock backfill and outlet pipes where needed. We’re familiar with Cowlitz County permit thresholds and can advise whether your wall height requires an engineered stamped plan. Ready to move forward? Schedule a free estimate with Brynion Excavation — we’ll evaluate your site and walk you through the right wall option for your Kelso, WA property.
(360) 485-6579
We combine experience, reliability, and local knowledge to deliver excavation services you can count on. From emergency appointments to long-term projects, we get the job done right.
We complete every excavation project on time with efficient workflows, dependable equipment, and no unnecessary delays.
Need excavation help fast? We offer emergency appointments for urgent site issues that require immediate attention.
We provide transparent estimates and fair pricing, delivering quality excavation work without hidden fees or inflated costs.
As a locally owned company, we proudly serve Kelso and surrounding areas with care, integrity, and accountability.
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Answers to common questions about our excavation and site preparation services in Kelso, WA.
Wall height requirements that trigger an engineered stamped plan vary by jurisdiction, but in Cowlitz County most walls over 4 feet of exposed height require a permit and engineering review. Ultra Block walls under that threshold can typically proceed without a stamped plan on residential lots. Brynion Excavation reviews your wall height and site conditions before the project begins so there are no surprises mid-job.
Ultra Block is a precision-cast interlocking modular block designed for both structural performance and decorative appearance — it has a consistent textured face and an engineered pin-and-lock system. Standard CMU blocks are masonry units typically used in construction walls, not landscape retaining. Eco Block is an entirely different product: oversized reclaimed 2×2×6 concrete blocks stacked for heavy industrial applications like bin walls and large-scale grade changes. Each system has the right use case.
Brynion Excavation installs crushed rock drainage aggregate directly behind the block face and includes perforated outlet pipe at the base of the wall to relieve hydrostatic pressure. Weep holes through the base course provide a secondary relief path. Proper drainage is the single most important factor in long-term wall performance — a wall that holds water against the face will eventually fail regardless of block quality.
Yes. Ultra Block’s modular system works well for commercial parking lot edges, loading dock grade transitions, and tiered landscaping on commercial properties in Kelso, Longview, and Woodland. Commercial projects often require geogrid reinforcement and engineered plans, which Brynion Excavation coordinates with your civil engineer or general contractor. We handle the excavation, base prep, drainage, and full block installation from start to finish.
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