Engineering Services Bridge · 2015-06-16 · Traffic Control Plan for US Route 202 Phase 1...
Transcript of Engineering Services Bridge · 2015-06-16 · Traffic Control Plan for US Route 202 Phase 1...
Town of Peterborough
Main Street Bridge, Intersection & Retaining Wall ProjectPublic Informational Meeting
June 16, 2015
Prepared by:
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Outline
Project Purpose Key Elements of Project Status of Design Conceptual Construction Sequencing Upcoming Milestones
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Project Purpose
Address Structurally-Deficient Bridge Stabilize Boulder Retaining Wall Improve Intersection Safety
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Key Elements of Project
Replace Bridge “In-Kind” +/- Construct Permanent Pedestrian Bridge Realign Intersection / Roadway Improvements Build New Retaining Wall Stabilize Existing Boulder Wall Repair Main Street Canal
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Preliminary Design Began September 2014: Geotechnical Investigation (Borings) Hydrology and Hydraulics Updated Survey Right-of-Way Research Utility Coordination Preliminary Bridge & Roadway Design Environmental Coordination
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Proposed Main Street Bridge
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Proposed Main Street Bridge
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Pedestrian Bridge Located 10’ Downstream of Vehicular Bridge Half-Through Truss Configuration Painted Black Steel Low Maintenance Concrete Deck
Looking for Public Input
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Pedestrian Bridge
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Intersection Realignment / Roadway Improvements Remove Abrupt Kink Uniform Lane and Shoulder Widths Add East Sidewalk New Retaining Wall / Reconstruct Right Dam
Abutment Stabilize Boulder Wall
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Guardrail Options Located behind sidewalk along retaining walls
Looking for Public Input
Rail at Elm Street Bridge
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Main Street Canal Existing Condition
Failed Top Granite Slab June 2011
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Main Street Canal Rehabilitation Proposed:
Remove and Salvage Top Slabs of Canal Install a Pipe Inside Existing Canal (“Slip-Line”)
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Conceptual Main Street Parking Layout Plan
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Utility Coordination Existing Utilities Within Project Limits:
Telecommunications – Fairpoint Communications and FirstLight
Power – Eversource Energy Cable – Comcast Cable Water and Sewer – Town of Peterborough
On-Site Meeting Held March 18, 2015
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Design
Environmental Coordination NHDOT Cultural Resources
Presented Project at December 11, 2014 Meeting NHDOT Natural Resources
Presented Project at February 18, 2015 Meeting NH Department of Environmental Services
(NHDES) Pre-Application Correspondence
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Conceptual Construction Sequencing
Construct Pedestrian Bridge & Relocate Utilities Close Bridge to Traffic Implement Route 202 Traffic Control Pattern Construct Retaining Wall & Demolish Bridge Construct Roadway & Bridge Open Bridge & Reestablish Permanent Traffic Pattern
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Upcoming Milestones
Preliminary Plans Summer 2015 Complete NEPA Fall 2015 NHDES Permit Applications Late 2016 Final Plans Late 2016 / Early 2017 Bidding Late Spring 2017 Award Project Fall 2017
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Outline
Conceptual Construction Sequencing and Schedule Status of NHDOT funding Public Input on Design Details Upcoming Milestones
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Update Since April 2013
Elimination of phased construction Roundabout removed No need for over-widening bridge
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Update Since April 2013
Complete Main Street Bridge closure Vehicular detour Pedestrians detoured to downstream pedestrian
bridge Maintain overall existing bridge width Intersection configuration similar
Minor improvements
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
US Route 202 Reconstruct Pine Street to Library Drive (900 lf) 25 mph design speed (min.) 10” pavement reclamation & step-box widening Provide 11’ travel lanes, 5’ shoulders (both sides),
5-6” sidewalks (both sides) Horizontal alignment will soften curves through
Main St intersection and remove pinch point Vertical profile to mimic existing to limit impacts
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
US Route 202 Retaining wall reconstruction (550’ +/-) on west
side to accommodate realignment Extend bridge rail to protect portions of wall
Shift utility poles to east side of roadway Maintain stop controlled intersection with Main St Improved sight distance at intersection
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Roadway Plan Add sketch (Jeff to update Friday)
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Retaining Wall Improvements Located along east side of Contoocook River
adjacent to US Route 202, south of bridge Need for improvements:
Existing boulder wall in poor condition Accommodate realignment of US Route 202
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Retaining Wall Improvements Add plan view of rehab/reconstruct limits, cropped
from presentation plan
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Retaining Wall Improvements Rehabilitation
Stabilize through the use of grout and micropiles Reconstruction
Feasible wall types: Soldier pile and lagging Steel sheetpile with king piles
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Proposed Main Street Bridge Maintain existing 43’ out-to-out width Maintain existing bridge rail geometry Maintain existing upstream sidewalk Remove downstream sidewalk
Relocate to pedestrian bridge Allows for additional travel way width
Maintain visible shape and dimensions of existing bridge Maintain hydraulic opening
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Canal (TOO MANY CANAL SLIDES, NEED TO MAKE 2 SLIDES, MAYBE 3 WITH PHOTO) 7’x7’ structure consisting of granite stone masonry Located under west approach of Main Street Bridge Outlets through northwest wingwall Previously utilized by the Transcript Printing
Company (1925 to 1942) Currently used as an overflow structure Add picture of layout
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Canal Existing Condition
Brief inspection December 2010 Overall condition is poor Several of top granite slabs are broken Stabilize to prevent further sinkholes or damage to
structures, roadways or private property above canal
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Transcript Dam (HOW MUCH DAM DISCUSSION NEEDED??) Constructed circa 1925 Served as part of infrastructure for Transcript
Printing Company (1925 to 1942) No hydraulic/commercial purpose since 1942 Consists of timber cribbing and stone with a
concrete cap Removal of some/all good trade-off
environmentally for project - KRP
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Utility Coordination Overhead utility relocation prior to start of bridge
and retaining wall construction Short duration temporary outages may be required Two utility accommodation options:
Aerial relocation likely (moving existing poles) Underground relocation being investigated
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Utility Coordination Action Items
Evaluate feasibility of pole relocation to east side of US Route 202 between Pine Street and bridge
Investigate cost of underground relocation
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Status of Roadway/Bridge Design
Right-of-Way (ROW) (THIS SLIDE NEEDED?) Preliminary findings show potential ROW shift Final coordination with NHDOT still required Some ROW impacts may be necessary Not expected to impact ultimate project design
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Environmental Coordination
Permitting Requirements NEPA Request for Categorical Exclusion and
Section 4(f) Evaluation NHDES Wetland Application and USACOE PGP Shoreland Permit By Notification (PBN) FEMA CLOMR for potential fill in
floodway/increase in BFE EPA/NHDES Stormwater Permit - NPDES
Construction General Permit (CGP)
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Environmental Coordination
National Environmental Policy Act (NEPA) Categorical Exclusion and Section 4(f) Evaluation
In process Located in Historic District Main Street Bridge eligible for National Register Effect Memo to be issued from NHSHPO Memorandum of Agreement required for
mitigation for resource impacts
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Construction Schedule
Traffic Control Plan for Main Street Bridge Full closure of bridge Pedestrians will be relocated to pedestrian bridge Vehicular traffic will be detoured around project
site Detour Route – US 202 / NH 101 / Grove Street
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Construction Schedule
Traffic Control Plan for US Route 202 Phase 1
Concurrent with bridge closure Construct temporary widening & sidewalk on east side
(within ROW) Shift utility poles to east side Shift traffic to east, maintain one travel way in each
direction with Maintain access to pedestrian bridge Construct retaining wall, step-box widening, &
sidewalk
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Construction Schedule
Traffic Control Plan for US Route 202 Phase 2
Concurrent with bridge closure Open new sidewalk west side Utilizing daily one-way alternating pattern, reclaim
existing pavement and const. binder pavement Construct permanent sidewalk on east side Perform final paving & restoration
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Construction Schedule
Coordination with Library Renovations Library closed during bridge construction Library parking lot used as construction staging
area Maintain access to pedestrian bridge
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
NHDOT Funding
Anticipated Construction Costs Add eng. Study cost, plus ped bridge, inflated to
2017 Separate bridge project cost from roadway project
cost Status of NHDOT Funding Explain breakdown of bridge and Rt 202 project funding?
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Public Input on Design Details
Highway Bridge Rail Height Existing height shorter than current standards for
pedestrians Options:
Modify rail to meet current standards Match existing rail height
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Public Input on Design Details
Highway Bridge Rail Height Modify rail to meet current standards
Supplement existing rail with steel hand rail Increase rail height by changing bridge geometry
Match existing rail height NHDOT design exception
Required for matching existing rail height Town accepts liability for reduced rail height
Town of Peterborough
Main Street Bridge, US Route 202 & Retaining Wall Project
Outstanding Items for Public Input
Main Street Parking Improvements Solicit input from Town on including in project Add picture of impacted area on this slide?