Slopes That Stay Where You Put Them

Hillsides wash out during heavy rain, driveways sink where fill settles unevenly, and steep slopes leave large portions of properties unusable for landscaping or construction. Andrew Roberson Construction builds retaining walls that hold soil in place while creating level terraces for planting beds, patios, or building pads. These structures redirect water pressure away from the wall face and transfer the load of retained earth into a footing system designed for the specific soil type and slope angle found on your property.

Retaining wall construction begins with excavation to stable soil, then placement of a gravel base and reinforced footing that prevents the wall from sliding or tipping forward under soil pressure. Drainage systems behind the wall collect groundwater and route it to outlets that prevent hydrostatic pressure buildup, which is the primary cause of wall failure in Roseburg's wet climate. Wall materials include concrete block, poured concrete, or natural stone depending on whether the structure serves primarily functional or decorative purposes.

Schedule an on-site assessment to evaluate your slope conditions and drainage patterns.

Walls taller than three feet require engineered footings because soil pressure increases exponentially with retained height, creating overturning forces that shallow foundations cannot resist. Drainage fabric installed behind the wall separates backfill material from native soil to prevent fine particles from clogging the gravel drainage layer, while perforated pipe collects water and directs it to daylight outlets rather than allowing saturation behind the wall. Backfill consists of free-draining gravel rather than clay soils because saturated clay exerts significantly higher lateral pressure than dry or drained materials.

Once construction completes, you notice level areas where slopes previously made mowing or planting impossible, defined landscape beds that hold mulch and soil without washout, and driveways or walkways that remain stable without settling or cracking. Water exits through designed drainage points rather than seeping under pavement or pooling against building foundations. Decorative stone facing adds visual interest while the structural core handles all load-bearing functions invisibly.

Custom wall designs account for curves that follow natural contours, stepped sections that accommodate large grade changes, and integrated planters or seating areas that enhance usability. Taller walls sometimes require geogrid reinforcement layers buried in the backfill to extend the effective base width and reduce overturning pressure. Surface finishes range from split-face block textures to natural stone veneer depending on architectural goals and budget.