Five Years After Vanishing, Questions Remain in Upriver Case

Questions Remain in Upriver Case

DNA testing confirmed remains belong to Shane Sprenger, but questions surrounding his disappearance remain unanswered

BLUE RIVER: Five years after Shane Sprenger disappeared under suspicious circumstances near Blue River Reservoir, Lane County Sheriff’s Office detectives continue investigating the case, hoping to determine what happened to the 47-year-old local contractor.

In a recent update, the Sheriff’s Office confirmed that the investigation remains active, although DNA testing has established that human remains recovered from two locations in the McKenzie River drainage belong to Sprenger.

Sprenger disappeared on November 2, 2021, after leaving a job site in McKenzie Bridge, where he had been working as a contractor. His tools were reportedly left plugged in when he departed for lunch, but he never returned.

A few days later, his silver 2009 GMC Sierra pickup was discovered abandoned along U.S. Forest Service Road 15 near Blue River Reservoir. Cellphone data placed him in the area before his phone was switched off.

The disappearance prompted an extensive search involving Lane County Sheriff’s deputies, Search & Rescue volunteers, K-9 teams, family members and friends. Searchers combed the reservoir area, surrounding forest roads and hillsides near the former Lazy Days Mobile Home Park, but found no trace of Sprenger.

The first significant development came in June 2023, when partial human remains were discovered in the McKenzie River drainage. The remains were subsequently identified as Sprenger’s, although additional searches failed to uncover further evidence.

Three months later, in September 2023, another bone fragment was discovered in the McKenzie River and submitted to the Oregon State Police crime laboratory for testing.

After significant delays, the nonprofit organization Dylan’s Legacy, which assists families of missing persons, helped Sprenger’s relatives raise funds for private DNA testing through Bode Technology in Virginia.

The laboratory confirmed that the additional bone fragment belonged to Sprenger, and his family was notified of the results in August 2025.

Although the discoveries confirmed Sprenger’s death, they did not resolve the circumstances surrounding his disappearance.

Family members have maintained that his sudden departure was completely out of character. In a 2022 letter published in McKenzie River Reflections, relatives described him as “the hardest worker we’ve ever known” and emphasized that he would not have voluntarily abandoned his tools and unfinished work.

Throughout the investigation, the family has continued seeking information from anyone who may have noticed suspicious activity around Blue River Reservoir or nearby forest roads in early November 2021.

The case has drawn considerable attention throughout the McKenzie River Valley, where residents, friends and volunteers participated in searches and supported the family during years of uncertainty.

The Sheriff’s Office has not announced any arrests or publicly identified a suspect in connection with the disappearance. Investigators have also not released a determination of how Sprenger died.

With the fifth anniversary of his disappearance now passed, detectives continue reviewing the case and pursuing information that could help explain what happened.

Anyone with information about Sprenger’s disappearance is encouraged to contact the Lane County Sheriff’s Office at 541-682-4141 and reference case number 21-6268. disappeared under suspicious circumstances near Blue River Reservoir, Lane County Sheriff’s Office detectives continue investigating the case, hoping to determine what happened to the 47-year-old local contractor.