FINAL DESIGN CONCEPT REPORT (Volume 1 of 2) I-19 San Xavier Road to I-10 Project No. 019 PM 057 H5105 01L Federal Aid Reference Number: 019-A (014) ADOT Contract No. 04-34 August 23, 2012 Prepared For the Arizona Department of Transportation Tucson District – Pima County PREPARED BY: 1860 East River Road, Suite 300 Tucson, Arizona 85718 FINAL DESIGN CONCEPT REPORT I-19 San Xavier Road to I-10 Project No. 019 PM 057 H5105 01L Federal Aid Reference Number: 019-A (014) ADOT Contract No. 04-34 August 23, 2012 Prepared For the Arizona Department of Transportation Tucson District – Pima County Prepared By: 1860 East River Road, Suite 300 Tucson, Arizona 85718 Final Design Concept Report I-19 San Xavier Road to I-10 1.5 Agency and Public Scoping ....................................................................................... 26 Table of Contents 1.5.1 Agency Scoping .................................................................................................. 26 1.5.2 Public Scoping .................................................................................................... 27 Executive Summary ............................................................................................................................. 1 2.0 Traffic And Crash Data .............................................................................................................. 29 Environmental Mitigation Measures.................................................................................................... 8 2.1 2001 Conditions ........................................................................................................ 29 1.0 Introduction .............................................................................................................................. 11 2.1.1 2001 Traffic Volumes .......................................................................................... 29 1.1 Foreword ................................................................................................................... 11 2.1.2 2001 Traffic Analysis .......................................................................................... 32 1.2 Need for the Project ................................................................................................... 11 2.2 Crash Analysis .......................................................................................................... 33 1.2.1 Traffic Volumes ................................................................................................... 11 2.2.1 Crash Analysis on I-19 ........................................................................................ 34 1.2.2 Level of Service (LOS) ........................................................................................ 13 2.2.2 Crash Analysis on the Crossroads ...................................................................... 35 1.2.3 CANAMEX Trade Corridor .................................................................................. 13 2.2.3 Crash Mitigation .................................................................................................. 35 1.2.4 Current Roadway Standards ............................................................................... 13 2.3 2030 Traffic Conditions .............................................................................................. 35 1.2.5 Access ................................................................................................................ 13 2.3.1 No-Action Alternative - 2030 Conditions ............................................................. 35 1.2.6 Drainage ............................................................................................................. 14 2.3.2 No-Action Alternative - 2030 Traffic Analysis ...................................................... 36 1.2.7 Summary ............................................................................................................ 14 2.3.3 Alternative #1 - Roadway Conditions .................................................................. 39 1.3 Description of the Project .......................................................................................... 14 2.3.4 Alternative #1 - Traffic Analysis .......................................................................... 39 1.3.1 Study Objectives ................................................................................................. 14 2.3.5 Alternative #2 - Roadway Conditions .................................................................. 49 1.3.2 Mainline Freeway ................................................................................................ 15 2.3.6 Alternative #2 - Traffic Analysis .......................................................................... 49 1.3.3 Geotechnical ....................................................................................................... 15 2.4 Summary of Operational Analysis ............................................................................. 53 1.3.4 Right-of-Way and Land Use ................................................................................ 15 2.5 Traffic Interchanges ................................................................................................... 60 1.3.5 Structures ........................................................................................................... 16 2.5.1 I-19/San Xavier Road TI ..................................................................................... 60 1.3.6 Drainage ............................................................................................................. 16 2.5.2 I-19/Los Reales Road TI ..................................................................................... 60 1.3.7 Utilities ................................................................................................................ 16 2.5.3 I-19/Valencia Road TI ......................................................................................... 60 1.3.8 Construction Sequencing .................................................................................... 16 2.5.4 I-19/Drexel Road TI ............................................................................................ 60 1.3.9 Traffic Interchanges ............................................................................................ 16 2.5.5 I-19/Irvington Road TI ......................................................................................... 60 1.3.10 Project Funding ................................................................................................... 17 2.5.6 I-19/Ajo Way TI ................................................................................................... 62 1.4 Characteristics of the Corridor ................................................................................... 18 2.5.7 I-19/I-10 System TI ............................................................................................. 62 1.4.1 Topography and Natural Features ...................................................................... 18 3.0 Design Concept Alternatives ...................................................................................................... 63 1.4.2 Mainline Freeway ................................................................................................ 18 1.4.3 Traffic Interchanges ............................................................................................ 19 3.1 Introduction ................................................................................................................ 63 1.4.4 Land Use ............................................................................................................ 19 3.2 Design Concept Alternatives Considered and Discontinued ..................................... 63 1.4.5 Right-of-Way ....................................................................................................... 20 3.3 Design Concept Alternatives Studied in Detail .......................................................... 63 1.4.6 Utilities and Railroads ......................................................................................... 21 3.3.1 No-Action Alternative .......................................................................................... 63 1.4.7 Drainage ............................................................................................................. 21 3.3.2 Alternative #1 ...................................................................................................... 63 1.4.8 Structures ........................................................................................................... 23 3.3.3 Alternative #2 ...................................................................................................... 63 1.4.9 Geotechnical ....................................................................................................... 23 3.4 Evaluation of Alternatives .......................................................................................... 64 1.4.10 Signing, Pavement Marking and Lighting............................................................ 25 3.5 Recommendations .................................................................................................... 64 1.4.11 Freeway Management System (FMS) ................................................................ 25 i Final Design Concept Report I-19 San Xavier Road to I-10 4.0 Major Design Features Of The Recommended Alternative