The Port of San Francisco is looking for ideas to salvage and redevelop eight under­used and deteriorating waterfront piers. Originally constructed for industrial uses, the piers have failed to keep up with the city’s other waterfront revitalization efforts, despite their prominent location; distinctive bulkhead buildings, clad in white stucco and red-tiled roofs; and views of San Francisco Bay. Some estimates put the cost of making the piers and their associated structures safe for reuse at $100 million. As part of an ongoing update to its waterfront land-use plan, the port is encouraging developers and organizations to offer creative ideas for restoring the eight piers. Avoiding pitfalls that have sunk other pier redevelopment plans will be challenging, however. In addition to the repair costs, any proposal must conform with current height restrictions on new construction, unless voters grant an exception for a specific project.