The Weedin Place Fallout Shelter is a disused and sealed Cold War-era nuclear fallout shelter located in Seattle, Washington, United States. Constructed beneath Interstate 5 between 1962 and 1963, it was designed as a public civil defense facility to provide short-term refuge for approximately 100 citizens in the event of a nuclear attack. Its infrastructure included diesel generators for power, a comprehensive air circulation system with heating and cooling, and an independent water supply from a well, pump, and pressure tank, all connected to municipal utilities.
Architecturally, the shelter represents a typical underground fallout shelter design of the early 1960s, emphasizing self-sufficiency and blast protection. It was built to withstand the immediate aftermath of a nuclear detonation, focusing on shielding from radiation and providing basic life support for a limited duration. The facility was integrated into the city's infrastructure, with piping connecting it to the broader Seattle water system.
Following the end of the Cold War and the decline of the civil defense program, the shelter was decommissioned and permanently sealed. It remains a preserved, though inaccessible, relic of Cold War civil defense strategy in an urban American setting. The site is of interest to military heritage researchers and urban exploration historians studying the extensive, often hidden, network of Cold War preparedness structures across the United States.