SR 06:058 - Laserfiche WebLink

Part of the environmental review includes the analysis of potential traffic impacts. For this analysis, they need to finalize how each intersection along the new roadway is to be configured. P1easanton staff has raised concerns with the technical group overseeing the traffic analysis. There are two design issues that will likely influence how the Route 84 Project affects cut-through traffic in Pleasanton. Pleasanton has been working with residents to minimize the amount of regional through traffic that uses Vineyard Avenue to avoid congestion along Route 84 and 1-580. The City has taken steps to design Vineyard A venue to minimize both traffic volumes and related noise through surrounding neighborhoods. ACTIA is proposing that Vineyard Avenue be widened at Isabel Avenue to allow more traffic to access Isabel Avenue from Vineyard Avenue. This will likely increase traffic volumes all along Vineyard Avenue. Pleasanton Staff has advised ACTIA and Caltrans that Vineyard Avenue at Isabel A venue acts as a constrained gateway leaving Pleasanton, and that Pleasanton does not want the intersection reconfigured in a way that would encourage or facilitate increased traffic along Vineyard Avenue. Caltrans has stated that it is their policy to widen roadways like Vineyard Avenue along state routes. Staff has prepared the attached letter to ACTIA advising them that modifying Vineyard Avenue at Isabel Avenue to accommodate more traffic will negatively impact Pleasanton residents along the Vineyard Corridor. Another related design issue involves the future eastbound right turn from Stanley Boulevard to southbound Isabel Avenue. A significant amount of through traffic currently uses Vineyard Avenue to access Isabel Avenue and then Concannon Boulevard. This compounds problems along Vineyard Avenue. Early designs of the new intersection of Stanley Boulevard at Isabel A venue included a diagonal free right turn from eastbound Stanley Boulevard to southbound Isabel A venue. Staff believes that reducing delay for motorists using Stanley Boulevard to access Isabel A venue will encourage drivers to choose Stanley Boulevard instead of Vineyard Avenue. The attached letter advises ACTIA that Pleasanton is working to shift through traffic from Vineyard Avenue to Stanley Boulevard and requests that the Expressway Project maintain the design elements at the Stanley/Isabel interchange like the free eastbound to southbound connector. Pleasanton staff recommends that this critical design feature not be removed from the Expressway design to help mitigate the impact of additional through traffic in Pleasanton that may result from this project. SR 06:058 Page 2 of 3