I-10 Twin Peaks Traffic Interchange, Environmental Assessment

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Alternatives October 2005 Twin Peaks Road would form signalized intersections with the I-10 frontage roads east and west of I-10. The lane configurations of the proposed intersections of Twin Peaks Road with the eastbound and westbound frontage roads are shown in Figures 3-15 and 3-16, respectively. Both intersections would be illuminated and bicycle striping would be carried through the intersection. Crosswalk and pedestrian actuated signals would be provided. Figure 3-15. Proposed Twin Peaks Road/Eastbound Frontage Road Intersection Configuration Twin Peaks Road I-10 Eastbound frontage road Figure 3-16. Proposed Twin Peaks Road/Westbound Frontage Road Intersection Configuration Twin Peaks Road Interstate 10 Traffic Interchange at Twin Peaks/Linda Vista I-10 Westbound frontage road 3-19 Project No.: NH-010-D (AIW) TRACS No.: 10 PM 236 H5838 01D
Alternatives October 2005 The preferred alternative would construct a new Twin Peaks Road/El Camino de Mañana/Linda Vista Boulevard signalized intersection approximately 650 feet northeast of the existing El Camino de Mañana/Linda Vista Boulevard intersection. The proposed intersection configuration is shown in Figure 3-17. This intersection would be illuminated and bicycle striping would be carried through the intersection. Crosswalk and pedestrian actuated signals would be provided. Past the intersection, the roadway would transition to a two-lane roadway to match the existing section of El Camino de Mañana. Figure 3-17. Proposed Twin Peaks/El Camino De Mañana/Linda Vista Boulevard Intersection Configuration El Camino De Mañana Twin Peaks Road Proposed Lighting Improvements Linda Vista Boulevard New intersection lighting would be provided at all signalized intersections within the study area. These include the intersections of Twin Peaks Road and Silverbell Road, Coachline Boulevard, the access road, the Twin Peaks Road and the I-10 eastbound and westbound frontage roads, and the Twin Peaks Road/El Camino de Mañana/Linda Vista Boulevard intersection. In addition to intersection lighting, underdeck lighting would be provided under the bridges crossing I-10 and the UPRR. According to UPRR’s Guidelines for Design of Highway Separation Structures over Railroads (Overhead Grade Separations) dated January 1999, underdeck lighting is required for bridges that exceed 80 feet in width. Proposed Bicycle and Pedestrian Facilities Inconsistent and discontinuous pedestrian and bicycle facilities exist within the project area. To promote the use of alternative modes of transportation and reduce vehicle trips, the existing bicycle lanes and sidewalk along Twin Peaks Road would be extended across the Santa Cruz River, across I-10 and the UPRR, and through the intersection of Twin Peaks Road/El Camino de Mañana/Linda Vista Boulevard. Along Twin Peaks Road, shoulders a minimum of 7 feet in width would be provided to accommodate bicycle use Interstate 10 Traffic Interchange at Twin Peaks/Linda Vista 3-20 Project No.: NH-010-D (AIW) TRACS No.: 10 PM 236 H5838 01D
Page 1: Interstate 10 Traffic Interchange a
Page 4 and 5: Draft Environmental Assessment Octo
Page 12 and 13: Mitigation Measures October 2005
Page 14 and 15: Mitigation Measures October 2005 19
Page 16 and 17: Mitigation Measures October 2005 St
Page 18 and 19: Introduction October 2005 CHAPTER 1
Page 20 and 21: AVRA VALLEY RD MARANA I-10 SCENIC D
Page 22 and 23: Introduction October 2005 Cortaro R
Page 24 and 25: Project Purpose and Need October 20
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Affected Environment and Environmen
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Interstate 10 Traffic Interchange a
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44.20 Avra Valley Rd Twin Peaks Rd
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Public Involvement/Project Coordina
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Conclusion October 2005 Interstate
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Bibliography October 2005 CHAPTER 8
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Bibliography October 2005 Tetra Tec
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