Routt County Search and Rescue officially called off the search for Jeffrey Fossum on Thursday, but searchers will continue to periodically check the bridge and the section of the Elk River near Hinman Park where his car was last seen.
Fossum, 50, had not been seen for more than a week when a friend reported him missing Sunday. Fossum's vehicle was last seen May 25 at the Mount Werner Road Sinclair gas station, where his credit card was used to purchase gas at 6:19 p.m.
Routt County Search and Rescue Incident Commander Jim Vail said that although the search has been called off, the group intends to send water-search dogs into the river a few miles from where Fossum's car was parked in hopes of finding a clue.
"The dogs showed interest in the bridge area where his car was and about 100 feet down from the bridge," Vail said.
The dogs' interest in the bridge and other areas close to the river are the only clues yielded by the search, Vail said.
Despite menacing rain and wet, cold and muddy conditions, about 30 search members from across Colorado searched from 9 a.m. to 2 p.m. Thursday in remote areas where they were not able to get to Wednesday.
The search members covered the area about 3/4 of a mile southeast from where Fossum's car was found.
"We've just exhausted our assets in terms of searchers and dogs," Vail said.
Vail also said the group is going to alert rafters to be aware of their surroundings and to keep their eyes open for anything that might aid in the search.
"We hope something will turn up," Vail said.
Steamboat Springs police Capt. Joel Rae said that although no significant clues were discovered during Thursday's search, the police department intends to keep investigating Fossum's case.