Here's the news from the City of Temecula:
This summer, the northbound lanes of Ynez Road (from Santiago Road to Rancho Vista Road) will be improved with a pavement rehabilitation, slurry seal, and new striping designs to provide two northbound lanes (instead of one) from Mountain View Road to Rancho Vista Road. The larger, overall project that will widen Ynez Road to two lanes in both directions from Santiago Road to Tierra Vista Road is scheduled for 2023.