The Slover Library project included restoration of the 115-year-old Seaboard building, a new seven-story, glass-walled addition and the renovation of the Seldon Arcade commercial building. Given the existing structures’ varying ages and conditions, plus the site’s location at 5 ft above mean sea level, several additive alternate bid items were used to address unforeseen conditions. Among them were the use of auger piles instead of driven piles to accommodate difficult subsurface conditions and installation of an elaborate dewatering system that included redundant pumps. Construction techniques were also adopted to repair and improve the Seaboard building’s existing windows and walls while preserving its historic character.

The project had limited staging and material delivery areas due to its urban setting. A nearby commercial building and parking garage also had to remain open. The garage’s six-story circular helix is mirrored by the library’s southern wall with little clearance between the structures, so construction work took place within the garage without compromising vehicle access.