What driveway erosion means
When soil washes out along driveways, patios, or walkways, it indicates concentrated runoff without proper drainage. In St Louis, heavy seasonal rain and clay soil create conditions where water follows predictable paths—carving channels and undermining hardscapes.
This is not cosmetic damage. Erosion destabilizes pavement edges, creates voids beneath slabs, and redirects water toward foundations.
Visible damage
- Soil channels forming along driveway
- Patio or walkway edges undermined
- Gravel or mulch washing away
- Water cutting across lawn to street
- Exposed aggregate or pavement settling
Structural risk
- Driveway or patio slab voids beneath surface
- Foundation exposure from soil loss
- Water redirected toward basement walls
- Retaining wall undermining
- Downspout discharge creating washout zones
Why this happens in St Louis
- Concentrated runoff from impermeable surfaces
- Downspouts discharging onto driveways or patios
- Improper slope directing water across property
- Clay soil erodes easily when saturated
- Missing or inadequate drainage systems
What fixes driveway erosion
Effective erosion control requires runoff redirection and drainage infrastructure. Solutions include:
- Channel drains or trench drains — capture runoff at critical points
- Downspout extensions or underground routing — move water away from hardscapes
- Grading correction — redirect surface flow before it concentrates
- Riprap or erosion control fabric — stabilize vulnerable areas
- French drains — intercept subsurface flow contributing to washout
The right approach depends on runoff volume, slope, and soil type. An excavation and drainage contractor evaluates these factors before recommending a system.
Get Connected to an Excavation & Drainage Contractor
If you are dealing with driveway erosion, patio washout, or surface runoff problems in the St Louis area, call the number below. You will be routed to a contractor who handles excavation, grading, and drainage systems.
This is a routing service. You will speak directly with an independent excavation and drainage contractor.