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Grant Road Improvement Plan

Tucson, Arizona

City of Tucson Regional Transportation Authority (RTA)

Sub-consultant to Kimley Horn Associates

2007-

CD+A is part of a multidisciplinary team redesigning a major regional street in Tucson, Arizona, to accommodate improved access and mobility for vehicles, bicycles, pedestrians, and transit and to support revitalization of adjacent properties. The Grant Road Improvement Plan is part of a regional transportation plan approved by voters in 2006 that mandated widening of Grant Road from two lanes to three in each direction. Tucson decided to undertake the project using Context-Sensitive Solutions, in which the social, land use, urban design and other contextual factors of surrounding areas are the basis for designing a transportation facility that fits its environment. CD+A is the land use team leader and as such has helped define the alignment and cross sections, and has designed the streetscape improvements.

The team began by conducting extensive analysis of the study area’s existing conditions and policies, synthesizing key aspects for the public. CD+A worked with the citizen task force to create a project vision statement and a set of guiding principles, used to evaluate design and alignment options. The team prepared a set of corridor-wide design concepts, including cross sections, pedestrian and bicycle crossings, water harvesting infrastructure, enhanced transit shelters, and special intersections using an indirect left turn to minimize right-of-way acquisition, pedestrian crossing distance and traffic backups. A series of public workshops allowed the public to view and comment on the analysis material, vision and guiding principles, draft design concepts, and potential revitalization concepts. CD+A and the team worked with the Task Force to design a draft alignment for Grant Road that incorporated the technical analysis, design, and public input to date. The alignment was presented in a series of public open houses, which resulted in more than 400 public comments. Based on these comments, a Task Force Recommended Alignment was prepared, and was then approved by the Tucson Mayor and City Council in January 2009.

The approved alignment provided the framework for CD+A’s development of a landscape and streetscape concept for Grant Road, which defined a palette of trees indicating different street context zones, “skyline” trees at major intersections, rainwater harvesting areas, and pedestrian-supportive elements such as lighting, seating, and special paving at locations of high pedestrian activity. CD+A refined the streetscape design for a Design Concept Report and 30% design construction documents for the corridor. CD+A is continuing the revitalization planning process with the Task Force to develop a Community Character and Vitality Plan that will complement the alignment. The team is also working on the construction documents for the Phase 1 improvement project around the Oracle Road intersection, which will begin construction in the fall of 2011.