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Tunnel Preservation Project
Yosemite National Park » Tunnel Preservation Project » Document List
• power wash all existing concrete tunnel linings,
• repair concrete cracks and spalling problems,
• replace the existing failed interior floor drains by cutting new drains into the concrete road surface,
• replace the trenches at the large tunnel entrances with new drop inlets and cross drains,
• replace adjoining pavement,
• repair and patch concrete floors,
• replace wall drains in existing locations unless missing,
• remove all graffiti,
• clean exterior drains at tunnel entrances
• resurface Wawona tunnel by grinding the top 1/4 inch of the road,
• remove four trees at the end of Wawona Tunnel, three cedars and one fir.