N11/N25 Oilgate to Rosslare Harbour Route Selection Report Part 1 - Main Text September 2011 N11/N25 Oilgate to Rosslare Harbour Route Selection Report Part 1 - Main Text September 2011 Wexford County Council N11/N25 Oilgate to Rosslare Harbour 247517 IWE CCT 09 C 247517-09-C Route Selection Report Part 1 - Main Text.doc 06 September 2011 Route Selection Report Part 1 - Main Text September 2011 Wexford County Council County Hall, Spawell Rd., Wexford Mott MacDonald, 5 Eastgate Avenue, Eastgate, Little Island, Cork, Co Cork, Ireland T +353 (0)21 4809 800 F +353 (0)21 4809 801, www.mottmac.com N11/N25 Oilgate to Rosslare Harbour Issue and revision record Revision Date Originator Checker Approver Description A June 2011 DW/RH/JH JS JTM Issue 1 Work in Progress B July 2011 DW/RH/JH JS JTM Issue 2 Final Draft C September 2011 DW/RH/JH JS JTM Issue 3 Final This document is issued for the party which commissioned it We accept no responsibility for the consequences of this and for specific purposes connected with the above-captioned document being relied upon by any other party, or being used project only. It should not be relied upon by any other party or for any other purpose, or containing any error or omission used for any other purpose. which is due to an error or omission in data supplied to us by other parties This document contains confidential information and proprietary intellectual property. It should not be shown to other parties without consent from us and from the party which commissioned it. Mott MacDonald, 5 Eastgate Avenue, Eastgate, Little Island, Cork, Co Cork, Ireland T +353 (0)21 4809 800 F +353 (0)21 4809 801, www.mottmac.com N11/N25 Oilgate to Rosslare Harbour Master Index N11/N25 Oilgate to Rosslare Harbour Route Selection Report Part 1 – Main Text Part 2 – Appendices Part 3 – Constraints Study Part 4 – Figures Mott MacDonald, 5 Eastgate Avenue, Eastgate, Little Island, Cork, Co Cork, Ireland T +353 (0)21 4809 800 F +353 (0)21 4809 801, www.mottmac.com N11/N25 Oilgate to Rosslare Harbour Content Chapter Title Page Part 1 – Main Text 1. Introduction 1 1.1 Purpose of this Report _______________________________________________________________ 2 1.2 Structure of the report________________________________________________________________ 3 2. Need for the Scheme 5 2.1 Introduction________________________________________________________________________ 5 2.2 National and Regional Policy __________________________________________________________ 5 2.3 Safety ____________________________________________________________________________ 8 2.4 Traffic ____________________________________________________________________________ 9 3. Scheme Objectives 15 3.1 Scheme Objectives_________________________________________________________________ 15 3.2 Economy ________________________________________________________________________ 15 3.3 Safety ___________________________________________________________________________ 16 3.4 Environment ______________________________________________________________________ 17 3.5 Accessibility & Social Inclusion________________________________________________________ 17 3.6 Integration _______________________________________________________________________ 17 4. Constraints Study 19 4.1 Introduction_______________________________________________________________________ 19 4.2 Constraints Assessment_____________________________________________________________ 19 4.3 Conclusion _______________________________________________________________________ 39 5. Feasible Route Options 41 5.1 Introduction_______________________________________________________________________ 41 5.2 Feasible Route Options _____________________________________________________________ 42 5.3 Route Selection Public Consultation____________________________________________________ 44 6. Stage 1 Preliminary Options Assessment 47 6.1 Introduction_______________________________________________________________________ 47 6.2 Route Option Combinations __________________________________________________________ 48 6.3 Methodology______________________________________________________________________ 48 6.4 Engineering Assessment ____________________________________________________________ 49 6.5 Environmental Assessment __________________________________________________________ 72 6.6 Economic Assessment _____________________________________________________________ 108 6.7 Preliminary Options Assessment Framework Matrix ______________________________________ 115 6.8 Recommended route options to be carried forward _______________________________________ 120 7. Traffic Assessment & Route Cross-section 123 247517/IWE/CCT/09/C 06 September 2011 247517-09-C Route Selection Report Part 1 - Main Text.doc N11/N25 Oilgate to Rosslare Harbour 7.1 Introduction______________________________________________________________________ 123 7.2 Traffic Models & Incremental Analysis _________________________________________________ 123 7.3 Transport Modelling _______________________________________________________________ 126 8. Stage 2 Project Appraisal of Route Options 133 8.1 Introduction______________________________________________________________________ 133 8.2 Description of Route Options carried forward to Stage 2 ___________________________________ 133 8.3 Economy Appraisal________________________________________________________________ 134 8.4 Safety Appraisal __________________________________________________________________ 144 8.5 Environmental Appraisal____________________________________________________________ 152 8.6 Accessibility and Social Inclusion Appraisal _____________________________________________ 242 8.7 Integration Appraisal_______________________________________________________________ 245 8.8 Project Appraisal Matrix ____________________________________________________________ 253 8.9 Recommendation on a Preferred Route Corridor _________________________________________ 253 9. Stage 3 Selection of Preferred Route Corridor 259 9.1 Project Appraisal Balance Sheet _____________________________________________________ 259 9.2 Road Safety Audit Stage F (Part 2) ___________________________________________________ 269 9.3 Recommendations ________________________________________________________________ 269 Tables Table 2.1: Level of Service Summary Existing Bypass (NRA Forecasted Growth – Low Growth) _____________ 11 Table 2.2: Observed 2010 AADT flows __________________________________________________________ 12 Table 3.1: Fatal Collision rates per billion vehicle km _______________________________________________ 16 Table 4.1: Designated Conservation Sites within Study Area _________________________________________ 29 Table 4.2: Geological Heritage ________________________________________________________________ 36 Table 4.3: Lakes within the Study Area__________________________________________________________ 37 Table 4.4: Classification of River Channels_______________________________________________________ 38 Table 6.1: Engineering Framework Matrix________________________________________________________ 66 Table 6.2: Terrestrial Ecological Impact Assessment _______________________________________________ 78 Table 6.3: Comparative Crossing Option Appraisal_________________________________________________ 84 Table 6.4: Criteria for Rating Site Attributes – Soils and Geology ______________________________________ 89 Table 6.5: Criteria for Rating Site Attributes – Hydrogeology _________________________________________ 89 Table 6.6: Level of Impact Criteria______________________________________________________________ 90 Table 6.7: Sources of Information – Soils and Geology _____________________________________________ 91 Table 6.8: Environmental Framework Matrix_____________________________________________________ 102 Table 6.9: Economic Assessment Framework Matrix ______________________________________________ 110 Table 6.10: Preliminary Options Assessment Framework Matrix ______________________________________ 115 Table 6.11: Recommended route options to be carried forward _______________________________________ 120 Table 6.12: Combinations proceeding to Stage 2 (with Links detailed)__________________________________ 121 Table 7.2.1: Traffic Model Scenarios and Route Options_____________________________________________ 125 Table 7.3.1: Summary of AADT for Traffic Model Scenarios __________________________________________ 129 Table 7.3.2: Road Types based on data from TD9/10 & TD10/07 of the NRA DMRB _______________________ 130 Table 8.3.1: Option Comparison Estimate (Traffic Model Scenario 0.1)__________________________________ 137 247517/IWE/CCT/09/C 06 September 2011 247517-09-C Route Selection Report Part 1 - Main Text.doc N11/N25 Oilgate to Rosslare Harbour Table 8.3.2: Option Comparison Estimate (Traffic Model Scenario 0.2)__________________________________ 137 Table 8.3.3: Option Comparison Estimate (Traffic Model Scenario 2)4 __________________________________ 137 Table 8.3.4: Option Comparison Estimate (Traffic Model Scenario 4)4 __________________________________ 137 Table 8.3.5: Option Comparison Estimate (Traffic Model Scenario 4a) __________________________________ 137 Table 8.3.6: Option Comparison Estimate (Traffic Model Scenario 5) ___________________________________ 138 Table 8.3.7: Option Comparison Estimate (Traffic Model Scenario 6) ___________________________________ 138 Table 8.3.8: CBA Route Options and Traffic Model Scenarios_________________________________________ 139 Table 8.3.9: CBA Results_____________________________________________________________________