ENGINEERED 
RETAINING
WALLS®

A barge access retaining wall project is one where materials, equipment, and crews must reach the site by water because there is no safe or practical road access. ERWalls uses its own barge to deliver all wall materials — block, stone, geogrid, drainage pipe, and equipment — then builds the engineered wall from the waterfront up. Barge access projects require detailed staging and lift plans, but the result is a fully engineered, permitted wall on properties that no other contractor can access safely.

Crane access becomes necessary when a steep slope, tight lot, urban setting, or physical obstacles make it unsafe or impossible to move blocks and stone with ground-based equipment. Cranes allow us to pick materials from a delivery point — including from a barge — and set them precisely into position on walls where excavators can't maneuver or where material needs to be lifted over obstacles. On big-block wall systems, crane setting is often faster and cleaner than any ground-based handling alternative.

Yes — we build complete engineered retaining walls on lake properties with zero road access. We bring the excavator, all block and stone material, drainage components, and crew by barge. We bench the bank, excavate the base, install drainage, and set the wall to engineered design. The finished wall is fully permitted and inspected, identical in quality to any road-accessible project. The barge delivery is planned at the start and priced into the estimate so there are no surprises.

By barge we can deliver big-block precast systems (Redi-Rock, MagnumStone), standard segmental wall block, natural boulders, crushed gravel and base stone, geogrid, drainage pipe, excavators and equipment, and crew materials. If it's needed to build an engineered wall, we can barge it in. Load planning is done in advance to ensure the barge is loaded efficiently and the site receives materials in the right sequence for construction.

Mostly, but not always. We also mobilize by barge for any site where the only practical access to the work area is by water — including creek-adjacent lots, steep urban sites with no driveway clearance, and properties where road access exists but load limits or width restrictions make material delivery by truck impractical. If getting materials to your site is a challenge, tell us the access constraints and we'll assess the right approach.

Barge site safety requires staged material zones so loads don't shift on the water, certified rigging and lift plans for all crane operations, proper barge tie-offs and fendering to protect docks and existing shoreline features, and an experienced crew that understands waterfront work. We use a step-by-step lift sequence so every load is planned before it's lifted, never improvised. Our crews perform barge-access work regularly, and our safety record on waterfront projects reflects that experience.

Crane setting adds cost — crane mobilization, operator time, and rigging are real line items. But on hard-access sites, crane setting often saves money compared to building a temporary access road ($20,000–$50,000+ and must be removed after construction), hand-carrying materials on steep sites, or skipping proper equipment and compromising base prep. We quote crane access separately and transparently so you can evaluate the real cost comparison for your specific site.

Yes — big-block wall systems are specifically engineered for crane placement. The blocks' weight and geometry make crane setting faster and more accurate than any alternative, and the result is cleaner block alignment and faster wall construction per course. On big-block walls, we typically set an entire course or multiple blocks per crane pick, making crane time highly efficient. This is one reason big-block systems are cost-competitive on crane-access sites despite the higher per-block material cost.

Every load must be pre-planned, sequenced, and rigged correctly before it leaves the ground. There is no room to improvise when setting multi-ton blocks from a barge in variable weather conditions. Engineering, logistics planning, and experienced crane operators matter more on barge-access sites than anywhere else. The wall itself must be built to the same standard as any engineered wall — access difficulty doesn't change the structural requirements, it just makes execution harder and demands a more experienced crew.

ERWalls owns its barge and crane — we don't subcontract waterfront access to a third party. We build engineered retaining walls on steep mountain and lake sites every week and have done so for 20+ years. Combining in-house barge capability with in-house engineering and construction means one team is responsible for the entire project, from access planning through final inspection. That's why our barge-access walls come in on schedule and pass inspection the first time.