A37 Options and Feasibility Study Option Development and Assessment 1 | 1 10 January 2020 Bath and North East Somerset Council 0 Option Development and Assessment B a t h a n d N o r t h E a s t S o m e r s e t C o u n c i l Document history and status Revision Date Description Author Checked Reviewed Approved 0 03/01/2020 DRAFT Report DL/SG D Lear D Lear Lear 1 10/02/2020 FINAL Report D Lear D Lear D Lear Distribution of copies Revision Issue Date Issued to Comments approved issued 0 10/01/2020 10/01/20 Aled Williams DRAFT ISSUE 1 20/02/2020 20/02/20 Aled Williams FINAL ISSUE Option Development and Assessment A37 Options and Feasibility Study Project No: 674726CH Document Title: Option Development and Assessment Document No.: 1 Revision: 1 Document Status: <DocSuitability> Date: 10 January 2020 Client Name: Bath and North East Somerset Council Client No: 0 Project Manager: David Lear Author: David Lear File Name: A37 Options and Feasibility Study-FINAL Report 100220.docx CH2 M HILL United Kingdom 1, The Square Temple Quay Bristol BS1 6DG 0117 910 2580 www.jacobs.com © Copyright 2019 CH2M HILL United Kingdom. The concepts and information contained in this document are the property of Jacobs. Use or copying of this document in whole or in part without the written permission of Jacobs constitutes an infringement of copyright. Limitation: This document has been prepared on behalf of, and for the exclusive use of Jacobs’ client, and is subject to, and issued in accordance with, the provisions of the contract between Jacobs and the client. Jacobs accepts no liability or responsibility whatsoever for, or in respect of, any use of, or reliance upon, this document by any third party. 1 i Option Development and Assessment Contents Executive Summary ............................................................................................................................................................ iv Acronyms .............................................................................................................................................................................. vi 1. Introduction ............................................................................................................................................................ 7 1.1 Background .......................................................................................................................................................................... 7 1.2 Study Objectives ................................................................................................................................................................. 9 1.3 Structure of Report ............................................................................................................................................................ 9 2. Traffic Data Collection ....................................................................................................................................... 10 2.1 General ................................................................................................................................................................................ 10 2.2 Manual Classified Counts .............................................................................................................................................. 10 2.3 Automatic Traffic Counts (ATC) .................................................................................................................................. 10 2.4 Automatic Number Plate Recognitions Survey (ANPR) ...................................................................................... 10 2.5 Key Findings ....................................................................................................................................................................... 10 2.6 Use of Data ......................................................................................................................................................................... 11 3. Option Development and ‘Long List’ Assessment ...................................................................................... 12 3.1 Option Listing: Requirement of Study Brief ............................................................................................................ 12 3.2 ‘Long List’ Options and Assessment .......................................................................................................................... 12 3.2.1 General ................................................................................................................................................................................ 12 3.2.2 Temple Cloud .................................................................................................................................................................... 12 3.2.2.1 Options Considered ......................................................................................................................................................... 12 3.2.2.2 Assessment Outcome ..................................................................................................................................................... 13 3.2.3 Farrington Gurney ............................................................................................................................................................ 15 3.2.3.1 Options Considered ......................................................................................................................................................... 15 3.2.3.2 Assessment Outcome ..................................................................................................................................................... 15 3.3 Shortlisted Options ......................................................................................................................................................... 16 4. Cost Estimating ................................................................................................................................................... 17 4.1 Temple Cloud .................................................................................................................................................................... 17 4.2 Farrington Gurney ............................................................................................................................................................ 17 5. Baseline Traffic Model Development ............................................................................................................. 18 5.1 Model Type and Network Extent ................................................................................................................................ 18 5.2 Model Calibration and Validation ............................................................................................................................... 19 5.3 Overview .............................................................................................................................................................................. 20 6. Highway Scheme Testing .................................................................................................................................. 21 6.1 General ................................................................................................................................................................................ 21 6.2 Options ................................................................................................................................................................................ 21 6.3 Key Findings ....................................................................................................................................................................... 21 6.3.1 Temple Cloud Options ................................................................................................................................................... 21 6.3.2 Further Commentary: Temple Cloud – Option 8 ................................................................................................... 22 6.3.3 Farrington Gurney Options ........................................................................................................................................... 22 1 ii Option Development and Assessment 7. Air Quality Modelling ......................................................................................................................................... 24 7.1 General ................................................................................................................................................................................ 24 7.2 Traffic Data and Emissions Calculations - Base ..................................................................................................... 24 7.3 Predicted Scheme Impacts ........................................................................................................................................... 24 7.3.1 Options Assessed ............................................................................................................................................................. 24 7.3.2 Headline Results .............................................................................................................................................................. 24 7.3.2.1 Option 8: Temple Cloud ...............................................................................................................................................