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Tryon Creek @ Hwy 43 Culvert Alternates Analysis

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Tryon Creek @ Hwy 43 Culvert Alternates Analysis TRYON CREEK @ HWY 43 CULVERT ALTERNATES ANALYSIS Prepared for: City of Lake Oswego, Oregon June 2007 HENDERSON LAND SERVICES LLC In association with DJ Warren Associates, Inc. This document is printed on recycled paper with soy based ink. ² ACKNOWLEDGEMENTS STUDY FUNDING Metro Regional Parks and Greenspaces Program US Fish and Wildlife Service PARTNERSHIP MEMBERS City of Lake Oswego Douglas Schmitz, City Manager Jane Heisler, Assistant City Manager Kim Gilmer, Parks Director Lisa Hamerlynck, Natural Resource Coordinator, Project Manager Massoud Saberian, Transportation Engineer US Fish and Wildlife Service Jennifer Thompson, Project Coordinator NOAA Fisheries John Johnson, Hydraulic Engineer Oregon Department of Fish and Wildlife Devin Simmons, ODOT Liaison Tom Murtagh, Habitat Biologist Oregon Department of Transportation Ron Kroop, District Manager Gail Curtis, Senior Transportation Planner Melissa Hogan, Environmental Coordinator Tryon Creek State Natural Area Park MG Devereux, Park Manager Tryon Creek Watershed Council Jen Seamans Blatner Friends of Tryon Creek Stephanie Wagner, Executive Director City of Portland Bureau of Environmental Services Amin Wahab, Watershed Manager Cynthia Studebaker, Biologist Metro Ross Roberts, Corridor Planning Manager Jaimie Snook, Rails to Trails Project Manager Portland & Western Railroad Mark Werner, Project Manager This document is printed on recycled paper with soy based ink. ² ACKNOWLEDGEMENTS CONSULTANT TEAM HENDERSON LAND SERVICES LLC Bruce A. Henderson, Project Manager, Partnership Communications DJ Warren & Associates, Inc. Daniel J. Warren, Project Management Assistance ALTERNATES DESIGN AND COSTING ASSISTANCE FROM ODOT Bridge Engineering Unit Antonios Stratis, P.E., Bridge Engineering Unit Manager Nowzar Ardalan, P.E., Senior Structural Design Engineer Contech Bridge Solutions, Inc. Matthew Houser, P.E., Oregon Regional Manager Tryon Creek @ Hwy 43 Culvert Alternates Analysis ² TABLE OF CONTENTS Page PREFACE .......................................................................................................i Need for Conceptual Alternates Analysis............................................................ ii Portland Endangered Species Act Framework Plan................................... ii City of Portland Tryon Creek Watershed Management Plan..................... ii City of Portland Department of Transportation draft Criteria for Ranking Culverts for Replacement................................................ ii City of Lake Oswego Comprehensive Plan ............................................... ii City of Lake Oswego Foothills District Master Plan ................................ iii City of Lake Oswego Trails and Pathways Master Plan........................... iii City of Lake Oswego Open Space Plan .................................................... iii The Partnership................................................................................................... iii Partnership Study Objectives.............................................................................. iv Public Process Integration ....................................................................................v INTRODUCTION ............................................................................................1 Preserving Our Urban Natural Resources.............................................................1 Existing Watershed Conditions ............................................................................2 History of the Culvert and Vicinity ......................................................................4 Community Linkages............................................................................................5 Parks and Trails...........................................................................................5 Community Gateway..................................................................................7 Transportation Planning Integration Opportunities ....................................7 100-Year Planning Horizon..............................................................7 Foothills District Redevelopment......................................................7 HWY 43 CULVERT ALTERNATES ...............................................................9 Conceptual Culvert Alternates Evaluation............................................................9 Alternate A: 2007 Fish Passage and Channel Enhancement Project ..................10 Evaluation of Alternate Benefits...............................................................11 Evaluation of Alternate Costs ...................................................................11 Alternate B: Concrete Span Arch .......................................................................12 Positive Design Aspects............................................................................12 Negative Design Aspects ..........................................................................13 Stream Channel Design Objectives...........................................................13 Evaluation of Alternate Benefits...............................................................14 Evaluation of Alternate Costs ...................................................................14 Alternate C: Steel Truss Bridge ..........................................................................15 Positive Design Aspects............................................................................15 Negative Design Aspects ..........................................................................16 Stream Channel Design Objectives...........................................................16 Evaluation of Alternate Benefits...............................................................16 Evaluation of Alternate Costs ...................................................................16 Tryon Creek @ Hwy 43 Culvert Alternates Analysis ² PREFERRED CONCEPTUAL DESIGN.......................................................17 Fisheries and Wildlife Passage Restoration........................................................18 Public Recreational Trail System........................................................................19 Planning Consistency and Community Linkage.......................................20 Public Safety Lighting vs. Fisheries and Wildlife Passage.......................21 Educational and Directional Signage........................................................21 Integration of Associated Transportation Improvements....................................21 Stampher Road..........................................................................................22 PLAN IMPLEMENTATION CONSIDERATIONS .........................................25 Potential Transit Service Impacts .......................................................................25 Hwy 43 Transit .........................................................................................25 Railroad.....................................................................................................25 Utility Conflicts and Surface Water Treatment ..................................................25 Construction Material Staging Area ...................................................................26 Sustainable Materials..........................................................................................26 Tryon Creek Channel Restoration.............................................................26 Hwy43 and Associated Roadways Decommissioning and Re-Construction...........................................................................26 PARTNERSHIP RECOMMENDATIONS AND FURTHER ACTIONS .........27 Partnership Recommendations............................................................................27 Further Actions...................................................................................................27 RELEVANT BIBLIOGRAPHY......................................................................28 Transportation and Trail Plans............................................................................28 Local Area Development Plans ..........................................................................28 Biological and Fish Passage Studies...................................................................28 APPENDICES I. Culvert Alternates Analysis II. Alternate B: Concrete Arch Spans Conceptual Cost Estimate and Design III. Alternate C: Steel Truss Bridge / Concrete Arch Span Conceptual Cost Estimate and Design IV. Preferred Alternate Estimated Cost 5-, 10-, 15-Year Projection V. Study Area Overview VI. Fish Passage Restoration Conceptual Design Tryon Creek @ Hwy 43 Culvert Alternates Analysis ² PREFACE An 80-year old culvert beneath Hwy 43 above the mouth of Tryon Creek is a known impediment to fish and wildlife passage from the confluence of Tryon Creek and the Willamette River upstream into the Tryon Creek State Natural Area Park. This lowest reach of Tryon Creek represents an important greenway corridor for wildlife and a critical link for sensitive and listed fish habitat protection. This 400-foot long culvert inhibits several indigenous fish species from accessing the middle and upper reaches of Tryon Creek and its tributaries above Hwy 43. Consequently, the presence of this culvert greatly reduces the value of the Tryon Creek watershed for fish and wildlife that would otherwise be able to access and use upstream habitats. In 2002, the City of Lake Oswego worked with Metro and the City of Portland to purchase property
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