Rockingham (Bellows Falls) BO 1442(41) Alternatives Presentation - PowerPoint PPT Presentation

Rockingham (Bellows Falls) BO 1442(41) Alternatives Presentation Meeting TH-448 (Depot Street) – Bridge #53 over the Power Dam Canal November 27, 2018

Introductions Laura Stone, P.E. VTrans Scoping Engineer Todd Sumner, P.E. VTrans Project Manager

Purpose of Meeting  Provide an understanding of our approach to the project  Provide an overview of project constraints  Discuss alternatives that were considered  Discuss our recommended alternative  Provide an opportunity to ask questions and voice concerns

Location Map

Bridge 53 Project Location Bridge 52 Location

Meeting Overview  VTrans Project Development Process  Project Overview – Existing Conditions – Alternatives Considered – Recommended Alternative  Maintenance of Traffic  Schedule  Summary  Next Steps  Questions

VTrans Project Development Process Initiated Project Project Contract Funded Defined Award Project Project Design Construction Definition  Quantify areas of  Identify resources & impact constraints  Environmental  Evaluate alternatives permits  Public participation  Develop plans,  Build Consensus estimate and specifications  Right-of-Way process if necessary

Who are you representing? A. Municipal Official B. Resident C. Local Business D. School E. Emergency Services F. Independent Organization G. Press H. Other

How often do you use this segment of Depot Street? A. Daily B. Weekly C. Monthly D. Rarely E. Never

How often do you walk over the bridge? A. Daily B. Weekly C. Monthly D. Rarely E. Never

How often do you bike over the bridge? A. Daily B. Weekly C. Monthly D. Rarely E. Never

What is your reason for attending this meeting? A. Specific Concern B. General Interest C. Live in Close Vicinity D. Other

Looking East over Bridge Existing Conditions – Bridge #53  Roadway Classification – Local Road – Class 3 TH  Bridge Type – 112’ long concrete arch  Ownership – Town of Rockingham  Constructed in 1909

Arch Deterioration Existing Conditions - Bridge #53  Culvert Rating 4 (Poor) – Significant spalling and exposed rebar

Looking West over Bridge - Resources Existing Conditions - Bridge #53  Historic Resources  Hazardous Waste Contaminated soils  Utilities  Railroad crossing

Hazardous Waste Existing Conditions - Bridge #53  Hazardous Waste Contaminated soils

Existing Conditions

Design Criteria and Considerations – Depot Street Bridge  ADT of 530  DHV of 100  % Trucks: 11  Design Speed of 25 mph  Utilities  Historic Resources  Hazardous Waste  Railroad Crossing

Alternatives Considered – Bridge #53  No Action – Additional maintenance required within 10 years  Permanent Bridge Closure – Arch would be closed to traffic and rehabilitated for pedestrian use only – Would not be eligible for future Town Highway Bridge funding  Arch Rehabilitation – Would need extensive work to the foundation of the arch – Concrete removal and patching of spandrel walls and the arch ring – Bridge would not be brought up to current HL-93 design loads – 20 year design life  Full Bridge Replacement On-Alignment with new Arch – Arch with similar characteristics of existing bridge – Current Typical section would be maintained (11’/4’ with sidewalk)

Alternatives Considered – Bridge #53 CONT.  New Steel Beam Bridge Off Alignment – New bridge constructed 450 north west of existing bridge – Remaining 2-way segment up to bridge would be converted to 1-way – Utility Relocation Avoided – Hazardous Waste Impacts avoided

Alternatives Considered – Bridge #53 CONT.  New Bridge at Bridge Street Location – New bridge constructed at Bridge 52 location – This would leave the more historically significant arch in place for pedestrian use only – Utility Relocation is easier at this site – more room for relocation – Avoids railroad flaggers – Hazardous Waste Impacts avoided – Better turning movements for trucks and busses

Recommended Alternative - Bridge #53  Full Bridge Replacement ON Alignment with New Reinforced Concrete Arch – Closed Spandrel Elliptical Arch with similar dimensions to the existing bridge – Typical section will be maintained • 11’/4’ Typical with a sidewalk – 75 year design life

Typical Section

On Alignment Layout On Alignment Layout  New arch matching existing for historic preservation  11/4 Typical Section with Sidewalk  Hazardous Soils, Utilities, Railroad Flaggers

Off-Alignment Layout Off Alignment Layout  Lined up with Canal Street  11/4 Typical Section with Sidewalk  Depot Street Bridge closed to motorized traffic

Proposed Profile  Match Existing

Maintenance of Traffic Options Considered  Off Site Detour  Existing Bridge for Off Alignment Option  Temporary Bridge

Road Closure  120 day road closure

Offsite Detour – Bridge #53  Detour Route: Depot Street, to Island Street, Bridge Street, Square, Rockingham Street, and Canal Street, back to Depot Street – 0.9 miles end-to-end  Pedestrian Route: Depot Street, to Island Street, Bridge Street, Square, and Canal Street, back to Depot Street – 0.5 miles end-to-end

What would be the maximum acceptable length of closure for Bridge #53? A. 8 weeks B. 12 weeks C. 16 weeks D. 18 weeks E. 20 weeks F. 24 weeks

Temporary Bridge  One lane Temporary Bridge  Utilities could be moved to temporary during construction  Would Require Right-of-Way

Temporary Bridge Layout

Recommended Scope  Full Bridge Replacement with Reinforced Concrete Arch ON Alignment with Traffic Maintained on Offsite Detour – Closed Spandrel Elliptical Arch with similar dimensions to the existing bridge – 120 day road closure • Separate Pedestrian Route signed – Typical section will be maintained • 11’/4’ Typical with a sidewalk – 75 year design life – Right-of-Way needed – Extensive Utility Relocation needed – Impacts to contaminated soils – Pavement should be extended past the railroad crossing • Railroad flaggers expected throughout construction duration

Alternatives Matrix Alt 1 Permanent Alt 5 Bridge Closure New Steel Alt 3 Alt 4 Alt 2 with Full Bridge Replacement: New Steel Beam Bridge at Arch Rehabilitation Rehabilitation Reinforced Concrete Arch ON Beam Bridge Bridge Street for Pedestrian Alignment OFF Alignment Location Rockingham (Bellows Use Falls) BO 1442(41) Off‐Site Detour a. Off‐Site b. Temporary a. Off‐Site b. Temporary Existing Bridge Off‐Site Detour Detour Bridge Detour Bridge Total Project Costs $772,882 $943,762 $1,444,635 $3,443,049 $4,078,389 $3,521,064 $4,112,570 (Including Utilities, ROW, & Engineering) Annualized Cost N/A $47,190 $72,230 $45,900 $54,380 $46,950 $54,830 Town Share $19,322 $23,600 $72,200 $172,200 $407,900 $352,100 $411,260 Project Development Duration 2 years 3 years 3 years 4 years 4 years 4 years 4 years Construction Duration 4 months 4 months 8 months 6 months 8 months 6 months 6 months Closure Duration (if applicable) Indefinite 90 days N/A 120 days N/A N/A 120 days 4‐11‐11‐4 (30') 4‐11‐11‐4 (30') 4‐11‐11‐4 (30') 4‐11‐11‐4 (30') 4‐11‐11‐4 (30') 4‐11‐11‐4 (30') Typical Section ‐ Bridge (feet) 5' sidewalk with 5’ sidewalk with 5’ sidewalk with 5’ sidewalk with 5’ sidewalk with 5’ sidewalk with 5’ sidewalk option Traffic Safety N/A Posted Bridge Posted Bridge Improved Improved Improved Improved Shifted 450’ Horizontal Alignment No No No No No No north Bicycle Access No Change No Change No Change No Change No Change No Change Improved Utility Relocation Relocation Relocation Relocation Relocation Relocation Relocation ROW Acquisition Yes Yes Yes Yes Yes Yes Yes Design Life N/A 20 Years 75 Years

Preliminary Project Schedule  Construction Start – 2023 – Total Cost Estimate: $3,443,049 • Estimated Town Share: $172,000

Which would you be most concerned about? A. Closure Duration B. Bridge Aesthetics C. Environmental Impacts D. Recreational Impacts E. Other F. Not really concerned

Which design aspect is the most important to you? A. Shoulder width/bicycle accommodations B. Aesthetics - Bridge Railing C. Construction year D. Construction Duration E. Cost F. Other

Did you find this presentation to be? A. Too technical in nature B. Too simplified C. Just about right D. Not much use at all

Do you find the recommended scope of work satisfactory? A. Yes B. No

Next Steps – Bridge #53 This is a list of a few important activities expected in the near future and is not a complete list of activities. Wait for Town response to recommendation on proposed project  Develop Conceptual plans and distribute for comment  Request a Public Information meeting  Process local agreements  Right-of-Way process (if needed)  Town is responsible for any chosen detour route

Rockingham (Bellows Falls) BO 1442(41) Questions and Comments TH-448 (Depot Street) – Bridge #53 over the Power Dam Canal November 27, 2018