After years, almost two decades, of discussion, debate, and acrimony across several neighborhoods, it appears that the city is close to a resolution with Klingle Road. Some residents wanted the road to be restored and upgraded from its 1990 condition. Others suggested a bike/hike trail while a third group suggested a compromise.
As suggested, there were several options considered, with a dedicated trail (option C in this link) as the preferred alternative.
Given the technical variables associated with the different options, the proposed solution appears to be a good result.