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Telegraph Hill Rock Slope
Client: San Francisco Department of Public Works
Contractor: Hoseley Corporation
Project Value: $180,000
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Project Overview:
This project involved the replacement of an aging sewer main on the steep slope of Telegraph Hill, home to San Francisco’s historic Coit Tower.
The scope included the installation of a new 10” ductile iron pipe (DIP) sewer line on the nearly vertical face of the hill, requiring a highly specialized approach.
Strategic Approach:
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Sewer Main Replacement & Bypass Setup:
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Carefully dismantled the existing sewer system while maintaining full functionality.
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Installed a temporary bypass to ensure uninterrupted service during construction.
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Vertical Installation & Access Challenges:
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Tackled the rare challenge of vertical sewer line installation on a steep hillside.
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Developed custom rigging and access methods to safely work on the slope.
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Coordination & Safety:
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Worked closely with city agencies to protect surrounding infrastructure and pedestrian areas.
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Prioritized crew safety and environmental protection throughout hillside operations.
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