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LAKE CHAMPLAIN BRIDGE PUBLIC INFORMATION MEETING AUGUST 29, 2006 7:00 – 9:00 P.M. PowerPoint Presentation
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LAKE CHAMPLAIN BRIDGE PUBLIC INFORMATION MEETING AUGUST 29, 2006 7:00 – 9:00 P.M.

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LAKE CHAMPLAIN BRIDGE PUBLIC INFORMATION MEETING AUGUST 29, 2006 7:00 – 9:00 P.M. - PowerPoint PPT Presentation

benedict-kirby
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LAKE CHAMPLAIN BRIDGE PUBLIC INFORMATION MEETING AUGUST 29, 2006 7:00 – 9:00 P.M.

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  1. LAKE CHAMPLAIN BRIDGEPUBLIC INFORMATION MEETINGAUGUST 29, 20067:00 – 9:00 P.M. BIN 5521180 PIN 1805.81 NYS DEPT. OF TRANSPORTATION, REGION ONE VERMONT AGENCY OF TRANSPORTATION

  2. BRIDGE BACKGROUND AGE: Built in 1929. Currently 77 years old. SPANS: 14 spans with a total length of 2184 ROADWAY WIDTH: 26.1’ STRUCTURAL TYPE OF BRIDGE: Combination of thru truss, deck truss, and deck plate girders. VERTICAL CLEARANCE ON BRIDGE: 14’0” VEHICLE CLERANCE UNDER BRIDGE (MAX): 95’0” AADT: Approximately 3400 vehicles (2005) LOAD POSTED: R – Restricted (1994) LAST MAJOR WORK COMPLETED IN 1991: Just 15 years ago.

  3. CURRENT CONDITION OF BRIDGE & THUS THE NEED FOR A PROJECT • Condition Rating of Bridge: 3.764 (based on scale of 1 to 7) • Federal Sufficiency Rating of Bridge: 29.2 (based on a scale 1 to 100) • Piers: Advanced State of Deterioration. • Primary Members: Main Carrying Members • Bridge Bearings • Bridge Joints • Wearing Surface

  4. PRELIMINARY ALTERNATIVES PERCEIVED AS REASONABLE • Rehabilitation • Replacement on Existing Alignment • Replacement on Slightly Modified Alignment • Replacement on Totally New Alignment (essentially new location)

  5. DISCUSSION OF REHABILITATION ALTERNATIVE(Minimum Work Required) • Paint Bridge • Replace Bearings (Jack up bridge, pour new pedestals, modify bearing connections, install new bearings) • New Bridge Deck Joints • New Wearing Surface • New Bridge Rail • Steel Repairs of Corroded Areas (primary & secondary members) • Rivet Removal & Replacement • Connection Repairs • Structure Repairs/Replacement • New Navigational Lighting • New Bridge Lighting • Deck Replacement on Span 7 Only • Repairs to Steel Beams (Piers on land) • Seismic Retrofits Where Possible

  6. DISCUSSION OF REPLACEMENT ALTERNATIVES • All New Bridge Structure Components • Seismic Design to Current Standards • Weathering Steel (no painting required) • Type of Structure – Probably Multi-girder Design • Architectural Enhancements

  7. EXPECTED ISSUES/DISCUSSSION POINTS • Age • Historical Nature of Bridge • Historical Nature of Area • Pedestrian & Bicyclists Accommodation (Roadway & Bridge Width) • Permits • Seismic Retrofits Or Design • Navigation Clearance (Horizontal) • Vertical Clearance on Bridge • Vertical Clearance Under the Bridge • Non-redundancy of Structure • Load Posting • Overall Bridge Length & Spans • Grades on Bridge • Sight Distance • Initial Project Cost • Life Cycle Costs

  8. NEXT STEPS • Aerial Survey • Mapping • Cores from Piers • Design Team Formulated • Full Bridge In-depth Inspection & Updated Load Rating • Establishment of a Lake Champlain Advisory Committee

  9. COMMENTS Send to: Timothy R. Conway, P.E. NYS Department of Transportation 328 State Street Schenectady, NY 12305 OR Email:tconway@dot.state.ny.us