On January 4, 2023, Governor Gavin Newson proclaimed a state of emergency throughout the State of California to support the response to historic rain and flooding. Heavy rains saturated slopes and triggered several road slip-outs along Stage Road and Alpine Road that require immediate repair. Emergency repairs may involve the following:
#1, 08SR1, Stage Road Mile 3.6: Repair consists of stabilization of slope with soil nails and a shotcrete wall and reconstruction of the roadway with soil lifts and a concrete block facing wall. A metal beam guardrail will be installed.
#2, 08SR2, Stage Road Mile 3.2: Repairs will include stabilization of the slope with soil nails and a shotcrete wall with low density fill to fill slope behind wall and minor reconstruction of roadway and shoulder. A metal beam guardrail will be installed. Stage Road 1 and 2 will be repaired concurrently.
#3, 09AL1, Alpine Road, near Hwy 35: Repairs at this location may include stabilization of the slope with soil nails and a shotcrete wall, and reconstruction of the roadway and shoulder. A metal beam guardrail may be installed. Drainage improvements may be incorporated to reduce infiltration and saturation of pavement sections.
Post-construction erosion control BMPs will be installed to conserve soil resources and protect water quality at each location. All temporary surface disturbances will be seeded with native plants. Work will be conducted in accordance with BMPs detailed in the County of San Mateo Routine Maintenance Program Manual.