SR 05:240 - Laserfiche WebLink

and Livermore, along a parallel freeway configuration, was shown to be necessary to achieve then-established congestion standards along the 1-580 gateways and on other City streets and to gain FHWA approval of the Hacienda interchange. Stoneridge Drive was designed as a 4-lane roadway within a potential 6-lane right-of-way (projection of future traffic at that time showed volumes near the 4-6 lane capacity boundary), and its design and those of the subdivisions served by it were established as part of the Stoneridge Drive Specific Plan. That plan has provided for full construction/right-of-way by developers along its route as a 4-lane roadway, including signalization of all intersections, and soundwalls. In Livermore's recently-adopted General Plan, Jack London Blvd. is retained as a major arterial, designed to meet Stoneridge Dr. at E1 Charro Road. The Stoneridge extension provides a new east - west route for Pleasanton residents, workers, and regional cut-through traffic. It also would function to connect whatever future land uses may be developed on the Staples Ranch property to the existing City. In mornings Stoneridge extension traffic is anticipated to serve primarily in-bound worker trips headed for Pleasanton's business parks. It would also attract considerable amounts of regional cut-through trips avoiding the 1-580 / 1-680 interchange bottleneck. It would also attract eastbound trips in the morning as Pleasanton residents would use the new route in lieu of 1-580 or Stanley to eastbound destinations. Traffic is expected to shift from 1-580 - Santa Rita, 1-580 - Hacienda, 1-580 - Hopyard, and from Dublin Blvd. onto Stoneridge. The level of traffic on a new street extension would be a function of the intersection design of"feeder" intersections (primarily E1 Charro / Stoneridge in the a.m.). Because total demand for westbound and westbound-to-southbound traffic in the Tri-Valley exceeds roadway capacities in the base traffic analysis, adding a major new east-west route would be expected to simply accommodate new traffic, and any shifted traffic would likely be replaced. In afternoons, the Stoneridge extension attracts traffic otherwise oriented to 1-580 and Dublin Blvd. via Hacienda and Santa Rita, to Santa Rita Valley -Busch - E1 Charro - 1- 580 (assuming E1 Charro is extended) and to Santa Rita - Valley - Stanley. Regional cut- through traffic depends in part on the accessibility of this extension to 1-680 interchanges (Bernal and Stoneridge routes are congested, and a West Las Positas interchange may not exist). Nonetheless, 1-580 eastbound traffic may choose access ways to Stoneridge rather than staying on the freeway, much as some regional cut-through traffic is anticipated to use Dublin Blvd. Westbound travelers (Pleasanton residents primarily) would use this route in lieu of 1-580, as would some westbound regional cut-through traffic due to the congestion on westbound 1-580. Due to the types of shifts of traffic likely, it is not feasible to estimate impacts on miles traveled nor time spent traveling without doing a specific model run analysis.