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Recommended Improvement Plan <br /> <br /> Arterial Issues: The pl3nned arterial system has been designed to provide smooth <br /> circulation in and between the Tri-Valley dries and to provide access to the <br /> freeway system. Intersections and freeway interchanges are the focal points of the <br /> arterial system. All of the widenings and extensions are necessary to serve new <br /> development, so the plan calls for direct developor construction or at least funding. <br /> The primary issue is how to share costs between jurisdictions having joint respon- <br /> sibility for a particular road. This is discussed further in the Finandng Plan <br /> chapter. <br /> <br /> There are two major arterials in the Tri-Valley that do not provide direct access to <br /> planned development but rather serve interregional traffic between Alameda <br /> County and Contra Costa County. These two arterials are Crow Canyon Road and <br /> Vasco Road. <br /> <br /> Crow Canyon Road. The portion of Crow Canyon Road west of Bollinger Canyon <br /> Road is a two-lane rural road that lies within the jurisdiction of Alameda County <br /> and Contra Costa County. While once used by its adjacent residents to bring goods <br /> to the market, today, Crow Canyon Road is being used by commuters as an <br /> alternate route to the 1-580/I-680 freeways. Development in the vicinity of Crow <br /> Canyon Road, espedally in the fast-growing San Ramon Valley area, has generat- <br /> ed a significant increase in traffic on this roadway. The expected forecast for this <br /> roadway is LOS F. <br /> <br /> The roadway, which is a narrow and winding road, was not designed to handle <br /> commuter traffic and does not have adequate width and alignment. The Alameda <br /> County, in collaboration with Contra Costa County and the City of San R~mon <br /> prepared and developed a project study report, pursuant to California Senate <br /> Bill 1149. The report recommended the construction of eight-foot shoulders, <br /> climbing lanes and road realignment eliminating short-radii curves. <br /> <br /> Contra Costa County has in its Measure C program the improvement of Crow <br /> Canyon Road within Contra Costa County. Alnmeda County, however, is seeking <br /> for funds to improve the two-lane section of the roadway. Unfortunately, improve- <br /> ment of this portion of Crow Canyon Road cannot be directed to a particular <br /> developer construction. But since the traffic forecast clearly indicates that traffic <br /> increase on this roadway is development related, it is recommended that <br /> subregional transportation impact fees be used to improve the section of Crow <br /> Canyon Road within the Tri-Valley area. <br /> <br /> Vasco Road. Vasco Road is a narrow and winding rural road that is a major <br /> commuter and truck route linking the Tri-Valley with eastern Contra Costa <br /> County. Approximately 17 miles of Vasco Road, starting at a point on Vasco Road <br /> approximately one-half mile south of the County Line to the intersection of <br /> Camino Diablo in Contra Costa County, will be relocated as a result of the <br /> construction of the Los Vaqueros Reservoir. This portion of Vasco Road is designed <br /> as a two-lane highway based on state and county standards for new roads with <br /> comfortable speeds of up to 65 mph. Meanwhile, the remaining section of the <br /> <br />Barton-Aschman Associates, Inc. 127 <br /> <br /> <br />