Hampton Roads Regional Bridge Study

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DEFICIENT BRIDGES 11 DEFICIENT BRIDGES Bridges can be considered deficient for a variety of reasons. Some bridges are deficient based on the condition of elements of the bridge, while others are deficient based on the bridge’s design. This section includes the following topics regarding deficient bridges: Structurally Deficient – This section details how bridges become classified as structurally deficient, those bridges in Hampton Roads that are classified as structurally deficient, and how Hampton Roads compares to other metropolitan areas in terms of structurally deficient bridges. Functionally Obsolete – This section details how bridges become classified as functionally obsolete, those bridges in Hampton Roads that are classified as functionally obsolete, and how Hampton Roads compares to other metropolitan areas in terms of functionally obsolete bridges. Deficient Bridges – This section details all deficient bridges, which is defined as the combination of structurally deficient bridges and functionally obsolete bridges. Federal bridge funding levels are impacted by this number of deficient bridges. Weight-posted Bridges – This section includes a summary of those structures in Hampton Roads that have weight limits posted so that they can safely remain in service, and how the percentage of weight-posted bridges in Hampton Roads compares to other metropolitan areas. CENTERVILLE TURNPIKE BRIDGE HRTPO In addition to the deficient bridges included in this section, two prominent bridges in Hampton Roads have been closed due to their deteriorated condition. More information on these two structures—the Jordan Bridge and Kings Highway Bridge—is included in Appendix E. HAMPTON James City/Williamsburg/York ROADS REGIONAL Transportation BRIDGE STUDY Study
DEFICIENT BRIDGES 12 STRUCTURALLY DEFICIENT BRIDGES A structurally deficient bridge is a structure with elements that need to be monitored and/or repaired. Structurally deficient bridges typically require maintenance and eventually need to be rehabilitated or replaced to address deficiencies. STRUCTURALLY DEFICIENT BRIDGES SUMMARY Bridges in Hampton Roads that are classified as structurally deficient 77/6.3% (54/4.4% in 2007) In spite of these deficiencies, structurally deficient bridges are not necessarily unsafe. Bridge inspectors will close or impose weight limits on bridges they feel are unsafe. In order to assure the safety of structurally deficient bridges, they are inspected more frequently (generally on an annual basis) and more thoroughly than other bridges. Hampton Roads rank among comparable metropolitan areas in terms of the percentage of bridges that are classified as structurally deficient 25 th highest of 35 areas Bridges are classified as structurally deficient if at least one of the following conditions is true: Component Rating Deck Condition Rating ≤ 4 Superstructure Condition Rating ≤ 4 Substructure Condition Rating ≤ 4 Culvert Condition Rating ≤ 4 Structural Condition Rating ≤ 2 Waterway Adequacy Rating ≤ 2 For definitions of these terms and ratings, see Appendix B. By rule, bridges built or reconstructed within the last ten years can not be classified as structurally deficient, regardless of the condition of the bridge. This stipulation, known as the Ten Year Rule, prevents a bridge from continuing to receive federal funding after major reconstruction as described further in the Bridge Funding section of this report. None of the bridges built or reconstructed within the last ten years in Hampton Roads would qualify as structurally deficient. LESNER BRIDGE HRTPO HAMPTON James City/Williamsburg/York ROADS REGIONAL Transportation BRIDGE STUDY Study
Page 1 and 2: Hampton Roads Regional Bridge Study
Page 3 and 4: NON-VOTING MEMBERS: HAMPTON ROADS T
Page 5 and 6: REPORT DOCUMENTATION ii TITLE: Hamp
Page 7 and 8: TABLE OF CONTENTS iv LIST OF FIGURE
Page 9 and 10: INTRODUCTION 2 Health Index -
Page 11 and 12: BRIDGE DEFINITIONS 4 1 - SLAB 99 br
Page 13 and 14: REGIONAL BRIDGE SUMMARY 6 BRIDGES B
Page 15 and 16: REGIONAL BRIDGE SUMMARY 8 Bridges i
Page 17: BRIDGE INSPECTIONS AND RATINGS 10 E
Page 21 and 22: DEFICIENT BRIDGES 14 Federal Struct
Page 23 and 24: DEFICIENT BRIDGES 16 FUNCTIONALLY O
Page 25 and 26: DEFICIENT BRIDGES 18 Jurisdiction F
Page 33 and 34: DEFICIENT BRIDGES 26 DEFICIENT BRID
Page 35 and 36: DEFICIENT BRIDGES 28 WEIGHT-POSTED
Page 37 and 38: FRACTURE AND SCOUR CRITICAL BRIDGES
Page 39 and 40: SUFFICIENCY RATING 32 The method fo
Page 41 and 42: SUFFICIENCY RATING 34 Jurisdiction
Page 43 and 44: HEALTH INDEX 36 HEALTH INDEX As des
Page 45 and 46: BRIDGE FUNDING 38 Non-federal-aid
Page 47 and 48: BRIDGE FUNDING 40 restrictions, suf
Page 49 and 50: BRIDGE FUNDING 42 Bridge, Pinners P
Page 51 and 52: BRIDGE PROJECTS 44 Federal Structur
Page 53 and 54: BRIDGE PROJECTS 46 A total of $781
Page 55 and 56: COST OF SUSTAINING BRIDGE CONNECTIO
Page 61 and 62: CONCLUSIONS 54 CONCLUSIONS Based on
Page 63 and 64: APPENDIX A 56 National Bridge Inven
Page 65 and 66: APPENDIX B 58 DECK, SUPERSTRUCTURE,
Page 67 and 68: APPENDIX B 60 INVENTORY RATING The
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APPENDIX B 62 UNDERCLEARANCES This
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APPENDIX B 64 APPROACH ROADWAY ALIG
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APPENDIX C 66 COMPONENT #1 - STRUCT
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APPENDIX C 68 If none of those four
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APPENDIX C 70 COMPONENT #4 - SPECIA
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APPENDIX D 72 Ü CHESAPEAKE BRIDGES
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APPENDIX D 74 Federal Structure ID
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APPENDIX D 82 Ü ISLE OF WIGHT COUN
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APPENDIX D 88 Ü NEWPORT NEWS BRIDG
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Hampton Roads Regional Bridge Study

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