By Ken Yeung on August 19, 2026 at 7:45 pm
August 19, 2026 at 7:45 pm
Washington, D.C. — Mount Rainier, the Space Needle, and the Seattle Seahawks are just a backdrop to the arrival of a monumental shift in the King County Library System’s operations: a $5.2 million installation in Renton, North America’s largest library materials sorter, formally opened Wednesday to handle the 25,000 items circulating through KCLS’s 50 libraries daily. This expansion represents a significant investment in the system’s infrastructure, a response to growing community needs and a commitment to modernizing library services.
The new warehouse, running since June 14th, replaces KCLS’s previous distribution center in Preston, which operated for nearly 25 years. Heidi Daniel, the organization’s executive director, emphasized the need for modernization: “It couldn’t keep pace with our growing community,” she stated. “We’ve been struggling with mounting maintenance needs and frequent breakdowns, and the previous system was simply unable to handle the volume of materials.”
In 2025, KCLS’s 700,000-plus active cardholders checked out more than 11 million physical items and 12 million digital items, a figure that underscores the system’s vital role in providing access to information and resources. The previous sorter, while serving KCLS faithfully, was plagued by these problems, and the system was essentially reliant on eBay parts for repairs.
KCLS announced the new sorter can handle up to 8,000 items per hour at full tilt. The warehouse operations manager, Charlie Mitchell, walked through the sequence of operations: drivers returning from branch pickups loaded totes onto two conveyor belts, and a pair of robotic arms at the far end destacking them at a rate of one every 15 seconds. Mitchell estimated that 800 to 900 totes could be received per day.
Rest assured, these books aren’t being destroyed after being scanned. It took KCLS nearly four months to set up and install everything. The facility is run by a team of 13 people, with six focused on scanning library materials and seven managing the back end, ensuring the new totes are filled and then set aside while they await delivery.
When asked if it was challenging to train the new equipment, Mitchell assured, ‘It’s a good job to pick up on.’ The clearest gains of this new setup are for the people working around the machine. Totes used to stack 14 levels high, sending workers up ladders to reach them; the new setup tops out at five, and instead of pushing totes down the line by hand, staff pulls them off onto a hand truck. The noise level dropped too. “The old system ran at about 89 decibels,” Mitchell said. “This [new sorter] runs at 67 decibels. It’s about the same as a vacuum cleaner.”
The other payoff shows up at the branches. Mitchell explained that the old sorter ran at 2 to 3 mph and put books in the wrong bin 1% to 2% of the time. While a low percentage, it sparked uncomfortable conversations with patrons who received an email saying their book was available for pickup. The new machine features automated tracking and destination redundancy support, likely reducing the odds of any mis-sorting.
King County Councilmember Steffanie Fain said the new facility solves a ‘major flaw’ in the library system — at least according to her two young children: It will enable books to move through the system faster so people won’t have to wait as long anymore for the material they want to read, listen, or watch. ‘I’m not sure my kids have ever had an opinion about a distribution center before, but this one definitely has their full support,’ she said.
‘I’m not sure my kids have ever had an opinion about a distribution center before, but this one definitely has their full support,’ she said.
“Today isn’t just about unveiling a remarkable piece of technology,” Daniel said. “It’s about investing in the future of KCLS, and most importantly, it makes a promise to the 1.6 million residents we are proud to serve: No matter where you live or which library you visit, you get the same selection, the same service, and the same speed.”
“I’m not sure my kids have ever had an opinion about a distribution center before, but this one definitely has their full support,” she said.
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Source: Tech
