Old Norwood Road Bridge Replacement / Rehabilitation · Replacement alternatives include a pre-cast...
Transcript of Old Norwood Road Bridge Replacement / Rehabilitation · Replacement alternatives include a pre-cast...
Old Norwood Road Bridge
Replacement / Rehabilitation
Old Norwood Road between Burnham Line
and Drummond Line
Township of Otonabee South Monaghan
Municipal Class Environmental Assessment
October 3rd, 2017
5:00 p.m. to 7:00 p.m.
Welcome
Please sign in inside
PUBLIC INFORMATION CENTRE #2
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Old Norwood Road Bridge
Replacement / Rehabilitation
Old Norwood Road between Burnham Line
and Drummond Line
Township of Otonabee South Monaghan
Municipal Class Environmental Assessment
October 3rd, 2017
5:00 p.m. to 7:00 p.m.
Thank You for Attending
Please sign in here
PUBLIC INFORMATION CENTRE #2
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Welcome to Public Information Centre #2 for the
replacement / rehabilitation of the Old Norwood Road
Bridge located on Old Norwood Road between Burnham
Line and Drummond Line within the Township of Otonabee
South Monaghan.
The purpose of this Public Information Centre is:
• To provide information for the project and explain the Municipal Class Environmental Assessment (MCEA) process.
• To summarize the study area and existing conditions at the Old Norwood Road Bridge location.
• To provide information regarding the alternative solutions shown at PIC#1.
• To present the preferred solution to address the structures deteriorated condition.
• To provide an opportunity for the public to discuss and provide comments on the preferred solution.
Members of the County of Peterborough and their
consultant, Ainley Group, are working as a team to
complete the MCEA process and are available to discuss
the project with you.
Project details and information about the process and
findings are presented on display boards throughout the
room. Please review the information at your leisure and
feel free to ask any questions you may have.
We encourage you to fill out a comment sheet before
you leave.
WELCOME
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PROJECT LOCATION PLAN
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WE
AR
E
HE
RE
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Request for Background Information
– Information request letters were submitted to the Ministry of Natural Resources
and Otonabee Region Conservation Authority to obtain natural heritage
information including fisheries and species at risk (SAR).
Public Information Centre #1
– Conducted on August 21, 2017 to introduce the project and describe the
alternative solutions.
Public Information Centre #2
– Mailed directly to regulatory agencies that may have potential interest in the
project.
– Mailed to potentially affected First Nations.
– Mailed to Emergency Services, local school boards, and Student Transportation
Services.
– Mailed to all residents within a 2.0 km radius of the project location.
– Published in local newspapers.
– Posted on the County of Peterborough website.
* The purpose of PIC #2 is to present and review the preferred solution with the public
and stakeholders.
Notice of Study Completion / Posting of Project
File Report
– To be published in local newspapers and on the County of Peterborough /
Township website.
– Posting will identify 30-day review period of Project File Report and locations
where documentation will be made available at the end of the MCEA process.
METHODS OF COMMUNICATION
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Study Purpose
The purpose of this Class Environmental Assessment is to identify the
preferred solution to address the deteriorated condition of the Old Norwood
Road Bridge and prepare a preliminary and detail design for the preferred
solution.
Study Background
The Old Norwood Road Bridge is located east of Peterborough on Old
Norwood Road between Burnham Line and Drummond Line, within the
Township of Otonabee South Monaghan. The existing bridge was
constructed in 1930 and is a single span cast in place rigid frame concrete
bridge with a surface treated wearing surface that spans Meade Creek. The
bridge conveys two-lanes of traffic.
A detailed inspection of the structure conducted in 2017 identified that the
wearing surface and concrete deck were in fair to good condition. The
abutments / wingwalls were in overall poor condition (severe scaling, localized
disintegration, spalls, and delaminations) due to their age and deterioration.
The deck soffit and fascia was noted to contain severe and deep
disintegration, delaminations and spalls. The guiderail was noted to be in
generally fair condition, but contained evidence of deteriorating post
connection to the bridge, and was noted to be lacking proper end treatments.
STUDY PURPOSE &
BACKGROUND
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Problem Statement
The existing bridge has reached the end of its design service life and has
deteriorated to a condition such that replacement / rehabilitation of the Old
Norwood Road structure is warranted.
Opportunity Statement
Replacement / rehabilitation of the Old Norwood Road Bridge would provide
improved safety conditions on Old Norwood Road for the crossing of Meade
Creek given the deteriorated condition of the structure.
PROBLEM AND OPPORTUNITY
STATEMENT
Typical severe delamination and
disintegration of soffit with exposed rusted
rebar
Severe scaling and delamination of
abutment wall
Very severe disintegration along the
fascia, wingwalls, and SBGR post
connection to the bridge
Typical medium to wide alligator cracking
and wheel track rutting in wearing surface
(bridge deck and approaches)
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PR
EL
IM
IN
AR
Y A
SS
ES
SM
EN
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RIT
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IA
F
OR
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Old
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Du
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as
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foll
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fa
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Na
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-
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Sto
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-
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-
Pro
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Cu
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PRELIMINARY STRUCTURAL
ASSESSMENT CRITERIA
Old Norwood Rd.
Bridge
Structure Design Code Canadian Highway Bridge
Design Code (CHBDC)
Drainage Basin (catchment
area; hectares) Approx. 1,581 ha
Design Flow Return Period 25 Years
Structure Span Existing – 4.95 m
Proposed – 5.10 m
Soffit Clearance (Inlet) ≥ 1.0 m
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Do Nothing
This alternative has been included as a basis for comparison to other
alternative solutions.
Rehabilitation
Rehabilitation of the structure in accordance with current design
standards. The scope of work will include:
– Concrete re-facing on the soffit, abutment walls, wingwalls, and
fascia
– Concrete patching, waterproofing, and paving of the structure and
its approaching roadway
– Repair of the SBGR and its post connection to the bridge
Replacement
Replacement of the structure with a new bridge that complies with
current design standards and keeping with the current profile /
configuration of the roadway (two-lane). Alternatives include:
– Replacement of the bridge with a pre-cast concrete box culvert
(5100 mm x 1500 mm)
– Replacement of the bridge with a pre-cast concrete open-footing
culvert (5100 mm x 1500 mm).
ALTERNATIVE SOLUTIONS
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Do Nothing
This alternative does not address the deteriorated condition of the
structure. This alternative will lead to additional deterioration of the
structure leading to increased costs for repairs / rehabilitation. The
existing structure is approximately 87 years old and has long reached the
end of its design service life (75 years).
Rehabilitation
Rehabilitation of the structure would require;
– Concrete re-facing on the soffit, abutment walls, wingwalls, and
fascia
– Concrete patching, waterproofing, and paving of the structure and
its approaching roadway
– Repair of the SBGR and its post connection to the bridge.
Rehabilitation would provide a service life range from 15 to 25 years,
construction duration from 8 to 10 weeks, and construction cost of
approximately $400,000.
Anticipated traffic control would include full roadway closure.
Replacement
Replacement of the structure addresses the problem / opportunity
statement and would be a cost-effective long term strategy given the
current deteriorated state of the structure.
Replacement alternatives include a pre-cast concrete open-footing
culvert and pre-cast concrete box culvert.
Rehabilitation alternatives provide a service life of a minimum of 75
years, construction duration from 10 to 16 weeks, and construction costs
from approximately $700,000 (pre-cast box culvert) to $800,000 (pre-
cast open-footing).
Anticipated traffic control would include full roadway closure.
SUMMARY OF EVALUATION OF
ALTERNATIVE SOLUTIONS
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Replacement with Pre-Cast Concrete Box Culvert
Criteria / Rationale:
Replacement of the structure with a pre-cast concrete box culvert (5100
mm x 1500 mm) that complies with current design standards and limits
impacts during construction.
Existing roadway profile (two lane traffic configuration) to be maintained
given the low average annual daily traffic (AADT) volumes on Old
Norwood Road.
Longest structural service life (estimated to be 75 years) of structural
alternative.
Reasonable construction duration (10-14 weeks).
Optimum construction cost ($~675,000 or ~9,300 per year).
Old Norwood Road to be closed during construction for the duration of
construction (detour route provided on following slides).
Streambed naturalization is proposed in the culvert (countersunk) for fish
habitat.
PREFERRED SOLUTION
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Pre-cast Concrete Box Culvert Example
PR
EF
FE
RE
D S
OLU
TIO
N – R
EP
LA
CE
ME
NT
W
IT
H
PR
E-C
AS
T C
ON
CR
ET
E B
OX
C
ULV
ER
T
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PR
EL
IM
IN
AR
Y D
ET
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OU
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D
UR
IN
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CO
NS
TR
UC
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N (R
EP
LA
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NT
O
R R
EPA
IR
)
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Summary:
The existing bridge has deteriorated to the extent of posing safety
concerns to the public. It has reached the end of its design service life.
Alternative solutions reviewed for the structure included Do Nothing,
Rehabilitation, and Replacement (alternatives pre-cast concrete box
culvert or pre-cast concrete open-footing culvert)
The preferred solution for the structure includes replacement of the
existing structure with a pre-cast concrete box culvert (5200 x 1500 mm).
This option provides a reasonable construction duration, the optimum /
reasonable construction cost, and the longest structural service life of all
alternatives.
Impacts to the biophysical, socio-economic, and built-heritage / cultural
environments were generally consistent between alternative solutions
(with the exception of Do Nothing).
Next Steps:
Upon completion of the Public Information Centre, the following steps will
be taken:
– Review comments received from the Public/Agencies for
consideration in finalizing the preferred design.
– Review the preferred design concept in consideration of natural,
socio-economic, cultural, and transportation environments.
– Confirm the preferred alternative.
– Publish the Notice of Completion in local newspapers and on the
County of Peterborough / Township website identifying the
completion of the Project File Report and its 30-day review period.
Thank you for your attendance and
participation in this public meeting.
Please provide comments by
October 13, 2017
.
SUMMARY AND NEXT STEPS
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Comments and information regarding the proposed project are
being collected to assist in meeting the requirements of the
Environmental Assessment Act. The collection of comments and
information will be conducted in accordance with the Freedom of
Information and Protection of Privacy Act. Comments will be
maintained on file for use during the Study and may be included in
the Study documentation. With the exception of personal
information, all comments will become part of the public record.
If you wish to comment or have any questions, please fill out a
comment sheet or provide written comments to the contacts below
no later than October 13, 2017.
PLEASE FILL OUT A COMMENT
SHEET
Dr. Ramin Rameshni, P. Eng
Consultant Project Manager
Ainley Group
1-50 Grant Timmins Drive
Kingston, Ontario
K7M 8N2
Phone: (343)-266-0002 ext. 207
Fax: (343)-266-0028
E-mail: [email protected]
Ms. Kendra Reid, C.E.T.
Senior Engineering Technologist
Engineering & Design
County of Peterborough Public Works
310 Armour Road
Peterborough, Ontario
K9H 1Y6
Phone: (705)-775-2737 ext. 3202
Fax: (705)-749-2551
E-mail: [email protected]
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