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Circulation Issues and Impacts?Corridor Redevelopment Santa Ana, CA?A Case Study

by T. C. Sutaria, City of Santa Ana, Santa Ana, United States,
Abi Mogharabi, City of Santa Ana, Santa Ana, United States,



Document Type: Proceeding Paper

Part of: Site Impact Traffic Assessment: Problems and Solutions

Abstract:

The Bristol Street Corridor Plan provides the framework for future redevelopment of a 3.0-mile section of the Bristol Street corridor in the central portion of the City of Santa Ana, California. The main circulation concept of the plan is to strengthen commercial nodes by eliminating access points along the corridor frontage, cul-de-sac several minor cross streets and provide access drives for new commercial buildings near the intersections with major cross streets. This strategy, together with upgrading land uses along the corridor with new mixed-use redevelopment projects, has raised concerns about the car carrying capacity and operational chracteristics of the major intersections along the corridor. This paper discusses the implications of eliminating mid-block driveway locations and examines traffic impact mitigation measures which have been identified to ensure the plan's implementation. The study deals with longer range traffic projections and changing trip distribution patterns over the years. A Quick Response software system has been used to evaluate the impacts of traffic diversion on residential developments parallel to the corridor. Employing the Intersection Capacity Utilization (ICU) methodology, levels of service at area intersections are compared to those for the General Plan conditions. The potential benefits to the corridor as a result of the construction of a raised center median and minor street cul-de-sacs are compared to the circulation in the residential neighborhood that utilizes these minor streets to access the corridor. Several special mitigation measures are then introduced to alleviate the negative effect of the additional travel lengths for the neighborhood residents.

Subject Headings: Traffic analysis | Streets | Traffic surveys | Traffic signals | Traffic models | Residential location | Intersections | California | United States

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