Ninth Line Over Sixteen Mile Creek Bridge - Structural Design Memo - City of Mississauga
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
Ninth Line Over Sixteen Mile Creek Bridge – Structural Design Memo Environmental Assessment (EA) and Preliminary Design for Ninth Line from Eglinton Avenue West to Derry Road West City of Mississauga April 19, 2021
City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
Disclaimer
The material in this report reflects HDR's professional judgment considering the scope, schedule and
other limitations stated in the document and in the contract between HDR and the client. The opinions in
the document are based on conditions and information existing at the time the document was published
and do not consider any subsequent changes. In preparing the document, HDR did not verify
information supplied to it by others. Any use which a third party makes of this document is the
responsibility of such third party. Such third party agrees that HDR shall not be responsible for costs or
damages of any kind, if any, suffered by it or any other third party resulting from decisions made or
actions taken based on this document.
In preparing this report, HDR relied, in whole or in part, on data and information provided by the Client
and third parties that was current at the time of such usage, which information has not been
independently verified by HDR and which HDR has assumed to be accurate, complete, reliable, and
current. Therefore, while HDR has utilized its best efforts in preparing this report, HDR does not warrant
or guarantee the conclusions set forth in this report which are dependent or based upon data,
information or statements supplied by third parties or the client, or that the data and information have
not changed since being provided in the report. Any use which a third party makes of this document is
the responsibility of such third party. Such third party agrees that HDR shall not be responsible for costs
or damages of any kind, if any, suffered by it or any other third party resulting from decisions made or
actions taken based on this document.
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
1City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
Contents
KEY PLAN ................................................................................................................................... 3
1.0 INTRODUCTION.................................................................................................................. 4
2.0 LOCATION ......................................................................................................................... 4
3.0 AVAILABLE INFORMATION ................................................................................................... 4
4.0 EXISTING CONDITIONS ....................................................................................................... 5
4.1 GENERAL CONDITIONS ................................................................................................... 5
4.2 DRAINAGE ..................................................................................................................... 5
4.3 UTILITIES ...................................................................................................................... 5
4.4 CULVERT CONDITION ..................................................................................................... 5
5.0 CROSS SECTION ............................................................................................................... 6
5.1 EXISTING CROSS SECTION ............................................................................................. 6
5.2 PROPOSED CROSS SECTION .......................................................................................... 6
6.0 GEOTECHNICAL INVESTIGATION ......................................................................................... 6
7.0 PROPOSED OPTION ........................................................................................................... 8
7.1 OPTION 1 – CULVERT EXTENSION ................................................................................... 8
7.2 OPTION 2 – INDEPENDENT STRUCTURE ........................................................................... 8
7.3 OPTION 3 - STRUCTURE REPLACEMENT ........................................................................... 8
8.0 SUMMARY OF OPTIONS...................................................................................................... 9
9.0 RECOMMENDATION ..........................................................................................................11
10.0 ENVIRONMENTAL Constraints ...........................................................................................11
11.0 MISCELLANEOUS ..............................................................................................................11
11.1 DESIGN Code ..............................................................................................................11
11.2 ACCESS to the Site ......................................................................................................11
11.3 PROPERTY ...................................................................................................................11
11.4 CONCRETE ...................................................................................................................11
11.5 REINFORCING Steel ......................................................................................................11
11.6 PARAPET Wall and Railing ...........................................................................................12
11.7 CATWALK FOR WILDLIFE PASSAGE ................................................................................12
Appendix A: Proposed General Arrangement Drawing
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
2City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
KEY PLAN
Ninth Line Over Sixteen
Mile Creek Bridge
(Asset ID: 056005)
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
3City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
1.0 INTRODUCTION
HDR has been retained by the City of Mississauga to carry out an Environmental Assessment
and Preliminary Design for the proposed transportation improvements to Ninth Line from Eglinton
Avenue West to Derry Road West in the City of Mississauga. This section of Ninth Line is
proposed to be urbanized, widened from 2 to 4 lanes, accommodate Active Transportation
improvements (sidewalks and cycle tracks) on both sides of Ninth Line, and streetscaping.
This project includes a Structural Assessment based on visual inspection of the culvert structures
along the Ninth Line corridor, provide bridge engineering services and preliminary design for the
proposed improvement of the culvert structures to accommodate the road widening.
An existing culvert at Osprey Marsh over the Sixteen Mile Creek is located in the corridor, this
structure is referred to as Ninth Line over Sixteen Mile Creek Bridge (Asset ID No: 056005) in
inspection reports and in this report. This project requires analysis and development of structural
design alternatives to accommodate the widening of Ninth Line at this culvert. All the other culverts
in the corridor do not require improvements to accommodate the roadway widening of Ninth Line.
This Structural Design Memo provides a comparison of the options to accommodate the widening
of Ninth Line over Sixteen Mile Creek Bridge crossing. The options considered includes culvert
extension, providing an independent structure at this culvert and culvert replacement. HDR will
perform a Preliminary Design of the preferred alternative for the structure to develop technically
to a 30% design level of detail and identify environmental impacts and proposed mitigation to
obtain approval-in-principle from permitting agencies.
2.0 LOCATION
The Ninth Line over Sixteen Mile Creek Bridge (Asset ID No: 056005) is located approximately
335m north of Britannia Road West, in the City of Mississauga. It currently extends across the
northbound and southbound lanes of Ninth Line over Sixteen Mile Creek. The culvert is crossing
the Osprey Marsh located on the east side of the structure.
3.0 AVAILABLE INFORMATION
Available information on the existing culvert includes the following:
• Ninth Line Over Sixteen Mile Creek Bridge Biennial Inspection Report (Asset ID: 056005),
prepared by Engineered Management Systems Inc., dated May 27, 2019;
• Ninth Line Culvert (Asset ID: 056005), Drawing No. C-32155 to C-32161, prepared by
McCormick Rankin, dated April 1996;
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
4City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
4.0 EXISTING CONDITIONS
4.1 GENERAL CONDITIONS
The Ninth Line over Sixteen Mile Creek Bridge was constructed in 1996 and is owned by the
City of Mississauga. The structure has a North-South orientation and consists of a 3 cell
reinforced concrete box culvert with a total span length of 23.2m and a width of 27.26m. The
size of each culvert opening is approximately 7.0m in width and 2.4m in height. Parapet walls
with single railing were noted above the east and west headwalls. Four (4) retaining walls and
two (2) approach slabs were also noted.
4.2 DRAINAGE
Preliminary hydraulic assessment shows that Ninth Line is overtopped by the Regional storm
event at the culvert location. Extending the length of the culvert to accommodate the proposed
road widening is anticipated to result in a 0.02 m increase in the Regional upstream flood level,
which can be considered negligible. However, since the Regional storm is overtopping Ninth
Line, a detailed hydraulic assessment will need to be carried out during detailed design. Raising
the road profile at this crossing is not recommended due to a likely increase in upstream and
downstream flood impacts. Opportunities to raise the road profile and mitigate potential flooding
impacts may be reviewed in Detailed Design with a subsequent detailed hydraulic assessment
when more detailed information is available.
4.3 UTILITIES
An existing 675mm diameter storm sewer is located along Ninth line and crosses the Sixteen Mile
Creek Bridge. A 300 mm diameter watermain is located on the west side of the existing culvert
and may be in conflict with the new extension of the culvert. Detailed utility investigations will need
to be carried out at the detailed design stage to determine exact locations of existing utilities.
Relocation of some existing utilities may be required to avoid conflict with the new culvert
extension.
4.4 CULVERT CONDITION
A Biennial Inspection Report dated May 27, 2019, was carried out by Engineered Management
Systems Inc. The findings of this report showed that the culvert was in generally good condition,
with the exception of the following:
• Spall, delamination and narrow to medium transverse cracks on concrete sidewalks;
• Medium to wide longitudinal, transverse and map cracks on the asphalt wearing surface.
Cracks were recently sealed after the last inspection;
• Narrow to medium cracks on parapet walls; and
• Efflorescence stained cracks inside culvert barrels soffit and walls.
Minor rehabilitation work may be required for the structure including the following:
• Repave asphalt wearing surface;
• Seal concrete cracks; and
• Concrete patch repair.
Furthermore, as part of their mandate, HDR carried out a visual inspection of the Ninth Line over
Sixteen Mile Creek Bridge on October 1, 2020. The structural assessment report has been
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
5City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
submitted to the City of Mississauga on November 7, 2020. The inspection verified that the 2019
Biennial Inspection Report findings and recommendations are consistent with the current site
conditions.
5.0 CROSS SECTION
5.1 EXISTING CROSS SECTION
The existing Ninth Line carries two (2) lanes of traffic in each direction with a centre left turn
lane with intermittent sidewalks at key intersections of Ninth Line. The existing Ninth Line does
not have a raised centre median.
5.2 PROPOSED CROSS SECTION
The proposed cross-section of Ninth Line at the Sixteen Mile Creek Bridge will consist of two (2)
3.5m wide traffic lanes one on each side of Ninth Line, two (2) 3.35m wide traffic lanes one on
each side of Ninth Line and one (1) 3.35m wide left turn lane in the centre of Ninth Line as shown
in the proposed cross section figure below.
Two (2) 2.0m wide in-boulevard cycle track and two (2) 2.0m sidewalk will be located one on each
side of Ninth Line as shown in the proposed cross section figure below. There are 1.0m buffers
on both side of the active transportation facilities, pedestrian/cyclist railings, 1.7m shoulders on
each side of Ninth Line and one (1) 1.65m centre median provided on the structure.
Figure 1 – Cross Section at Ninth Line over Sixteen Mile Creek Bridge
6.0 GEOTECHNICAL INVESTIGATION
Thurber Engineering Ltd. carried out a preliminary geotechnical investigation in August 2020. The
following summarizes the findings of the investigation and recommendations. The Preliminary
Geotechnical Investigation Report was issued on April 9, 2021.
In general, the subsurface conditions generally consist of asphalt and granular fill to a depth of
between 0.5m and 1.0m, covering native firm to very stiff silty clay to a depth of 4.1m and
overlaying firm to stiff silty clay till to at least 5.2m depth. Ground water level was measured at
approximately Elevation 187.3m.
The geotechnical report proposed that the base of the culvert extension should be placed at the
same level or lower than the existing culvert base and founded on native stiff to hard or compact
to very dense soil. The base of the Ninth Line over Sixteen Mile Creek Bridge is at approximate
Elevation 186.7 m, which corresponds to firm to stiff silty clay till. Due to the size of this culvert,
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
6City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
additional deeper boreholes should be advanced during detailed design to confirm the founding
soil conditions.
The report also proposes that all existing fill, topsoil, organic/streambed deposits and soft / loose
soils should be removed from the culvert subgrade prior to placement of the culvert bedding
material and recommends that the exposed base shall be inspected and approved by a
geotechnical engineer. The geotechnical report also recommends that subgrade below the
culvert extension on the firm silty clay be sub-excavated down to the underlying stiff to very stiff
silty clay till and replaced with compacted Granular A or Granular B Type II material to the
appropriate subgrade level, in order to minimize the potential for differential settlement on the
subgrade silty clay or silty clay till. If it is necessary to maintain the culvert extension at the same
or lower elevation as the existing culvert during detailed design, the grade may be raised using
Granular A backfill, compacted to 100% of SPMDD.
A minimum 300 mm thick layer of bedding material conforming to OPSS.MUNI 1010 Granular A
or Granular B Type II requirements should be provided under the base of the box culvert extension
as per OPSD 803.010. Following inspection and approval, the bedding material should be placed
on the prepared subgrade as soon as practicable. A 75 mm minimum thick top levelling course
consisting of uncompacted Granular A should be provided to support the box culvert as per OPSS
422. All subgrade preparation, placement and compaction of the bedding material should be
carried out in the dry. Construction equipment is not allowed on the bedding or the prepared
subgrade during construction and the bedding should be protected from disturbance.
The recommended culvert factored bearing resistance is 225kPa at ULS and the bearing
resistance at SLS is 150kPa for up to 25mm settlement. A consequence factor of 1.0 was adopted.
Geotechnical resistance factor of 0.5 for bearing and 0.8 for settlement were used to obtain the
bearing resistance as per Canadian Highway Bridge Design Code (CHBDC) 2019. An ultimate
coefficient of friction of 0.45 shall be assumed, to calculate the resistance to sliding between the
concrete and the underlying Granular A or B Type II bedding material. The geotechnical
resistances are for vertical, concentric loads, if eccentric or inclined loads are applied, the
resistance values used must be reduced in accordance with CHBDC 2019, Clause 6.10.3 and
Clause 6.10.4.
Frost penetration at this culvert is at approximately 1.2 m. Frost treatment as per OPSD 803.010.
shall be included if the concrete box culvert extension is constructed within the frost penetration
depth.
Free-draining, non-frost susceptible granular materials conforming to OPSS Granular A or
Granular B Type II requirements, shall be used for the backfill to the culvert extension and
headwall. Widened embankment slopes beyond the culverts should be constructed at the same
slope inclination as the existing embankment, but not steeper than 2H:1V.
Erosion protection should be provided at the culvert extension inlet and outlet areas. In order to
minimize the potential for seepage through the granular bedding and backfill material and avoid
consequent erosion of these materials, a concrete/steel cut-off wall or clay seal should be installed
at the culvert inlet. The clay seal should have a minimum thickness of 0.5m, completely surround
the culvert, extend laterally the width of the granular backfill material, extend above the high water
level and the material used should conform to the requirements of OPSS 1205.
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
7City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
7.0 PROPOSED OPTION
7.1 OPTION 1 – CULVERT EXTENSION
The existing 3 cell reinforced concrete box culverts will be extended to accommodate the widening
of Ninth Line at Sixteen Mile Creek. Three reinforced concrete box culvert cells will be added on
each of the east and west side of the culvert for a total culvert width of 32.5m. The existing
retaining walls will be removed, and 4 new retaining walls will be constructed at the end of the
culvert. A portion of the existing concrete slope will be removed to facilitate the new culvert
extension construction, the concrete slope will then be reinstated after construction of the new
culvert extension.
Based on the hydraulic analysis results, the clearance between the soffit of the top slab and the
normal water level cannot satisfy the requirements in CHBDC. A detailed hydraulic assessment
will need to be carried out during detailed design.
The capital cost for this construction will be $1,704,000. This option is the technically preferred
alternative with supporting hydraulic modelling and analysis to be completed and confirmed during
Detailed Design.
7.2 OPTION 2 – INDEPENDENT STRUCTURE
The existing 3 cell reinforced concrete box culverts will remain. Additional three (3) reinforced
concrete box culvert cells will be added as an independent structure on each of the east and west
side of the culvert for a total culvert width of 32.5m. The existing retaining walls will be removed,
and 4 new retaining walls will be constructed at the culvert. A portion of the existing concrete
slope will be removed to facilitate the new independent structure construction, the concrete slope
will then be reinstated after construction of the new culvert extension.
Based on the hydraulic analysis results, the clearance between the soffit of the top slab and the
normal water level cannot satisfy the requirements in CHBDC. A detailed hydraulic assessment
will need to be carried out during detailed design. The capital cost for this construction will be
$1,635,000. This option is not recommended as there will be various durability and maintenance
issues if this option was to be chosen.
7.3 OPTION 3 - STRUCTURE REPLACEMENT
The existing 3 cell reinforced concrete box culverts will be replaced with a new 2 span voided slab
girder, matching the existing hydraulic opening for a total culvert span of 32.5m. The existing
retaining walls will be removed, and new abutments and wing walls will be constructed. A portion
of the existing concrete slope will be removed to facilitate the new voided slab girder construction,
the concrete slope will then be reinstated after construction.
Based on the hydraulic analysis results, the clearance between the soffit of the structure and the
normal water level cannot satisfy the requirements in CHBDC as raising the road profile is not
recommended. A detailed hydraulic assessment will need to be carried out during detailed design.
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
8City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
The capital cost for this structure will be $4,660,000. This option is not recommended due to the
high cost involved.
8.0 SUMMARY OF OPTIONS
The table below is a summary of the advantages and disadvantages of the 3 Options:
Ninth Line over Option 1 – Culvert Option 2 - Independent Option 3 - Structure
Sixteen Mile Extension Structure Replacement
Creek Bridge
Description The existing reinforced The existing 3 cell reinforced The existing 3 cell
concrete box culverts concrete box culverts will reinforced concrete box
will be extended to remain. Additional three (3) culverts will be
accommodate the reinforced concrete box replaced with a new 2
widening of Ninth Line at culvert cells will be added as span voided slab
the Sixteen Mile Creek an independent structure on girder, matching the
Bridge. Three (3) each of the east and west existing hydraulic
reinforced concrete box side of the culvert for a total opening for a total
culvert cells will be culvert width of 32.5m. culvert span of 32.5m.
added on each of the
east and west side of the
culvert for a total culvert
width of 32.5m
Capital Cost $1,704,000 $1,635,000 $4,660,000
LCCA $ 2,410,921 $ 2,686,798 $ 5,401,374
(at Year 50)
Utilities Overhead power lines Overhead power lines will Overhead power lines,
will likely impact the likely impact the bridge existing 675mm dia.
bridge construction. The construction. The existing storm sewer and
existing 300mm 300mm diameter watermain existing 300mm
diameter watermain may may be in conflict with the diameter watermain will
be in conflict with the new independent culvert have a significant
new culvert extensions structure and may need to impact on the
and may need to be be relocated. replacement of the
relocated. existing culvert
structure and may need
to be relocated. There
may be other existing
utilities like gas lines,
other watermains, or
sewer lines below Ninth
Line roadway that may
also impact the
construction of the new
culvert structure.
Environmental As long as the water is As long as the water is The creek at the Ninth
Concerns and diverted from upstream diverted from upstream of Line over Sixteen Mile
Mitigation of the culvert and the culvert and released Creek Bridge does not
Measures released downstream for downstream for the fish directly support fish
the fish habitat habitat downstream of the habitat, but the flow
downstream of the culvert during construction of conveyed contributes to
culvert during the independent culvert downstream fish
construction of the structure, there is no habitat. As long as the
culvert extension, there environmental concerns and water is diverted during
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
9City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
Ninth Line over Option 1 – Culvert Option 2 - Independent Option 3 - Structure
Sixteen Mile Extension Structure Replacement
Creek Bridge
is no environmental there will be no impact to construction from
concerns and there will Sixteen Mile Creek as it upstream of the culvert
be no impact to Sixteen does not directly support fish and released
Mile Creek as it does not habitat. downstream for the fish
directly support fish habitat downstream of
habitat. the culvert, there is no
environmental
concerns and no
impact to Sixteen Mile
Creek at the culvert.
Constructability Common construction Common construction Common construction
materials and materials and techniques will materials and
techniques will be be required for the extension techniques will be
required for the of the culvert. There will be required for the
extension of the culvert. minimal in-water works construction of the new
There will be minimal in- required to extend the bridge. There will be
water works required to culvert, the water in the significant in-water
extend the culvert, the culvert can de temporarily works required to
water in the culvert can diverted during construction. remove the existing
de temporarily diverted The site is readily accessible culvert and to construct
during construction. The from Ninth Line. the new culvert. Water
site is readily accessible in the existing culvert
from Ninth Line. can de temporarily
diverted during
construction. The site is
readily accessible from
Ninth Line.
Traffic Traffic can be Traffic can be maintained in Traffic cannot be
maintained in the the existing two lanes in the maintained on Ninth
existing two lanes in the centre of Ninth Line at the Line at the Sixteen Mile
centre of Ninth Line at Sixteen Mile Creek Bridge. Creek Bridge during
the Sixteen Mile Creek The new independent culvert construction of the new
Bridge. The new culvert structure can be constructed voided slab girder.
extension construction in stages. A traffic staging Traffic will need to be
can be staged. A traffic plan will need to be diverted.
staging plan will need to developed during the
be developed during the detailed design stage in
detailed design stage in consultation with the City of
consultation with the City Mississauga.
of Mississauga.
Durability/ The existing concrete The existing concrete box The new voided slab
Maintenance box culverts are 25 culverts are 25 years old and girder bridge will not
years old and will likely will likely not need to be need to be replaced for
not need to be replaced replaced for another 40 to 50 another 75 years.
for another 40 to 50 years due to its current age Regular conventional
years due to its current and condition of the culvert. maintenance will be
age and condition of the However, the new required.
culvert. Regular independent structure may
conventional require additional
maintenance will be maintenance and may cause
required. differential settlements. Due
to increased freeze thaw
effects, the life expectancy
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
10City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
Ninth Line over Option 1 – Culvert Option 2 - Independent Option 3 - Structure
Sixteen Mile Extension Structure Replacement
Creek Bridge
of the structure may also be
decreased.
Technically Recommended Option
Preferred
Alternative
9.0 RECOMMENDATION
Option 1 - Culvert Extension is the technically preferred alternative. This option involves extending
the existing culvert with new 3 cell reinforced concrete box culverts on each side of Ninth Line.
This is the most cost-effective option and in addition to that, there will be less impact to traffic
during construction, lower impact to the environment and it is much less complex to construct
compared to the other 2 options.
10.0 ENVIRONMENTAL Constraints
There are no Provincially Significant Wetlands (PSW), and no Natural and Scientific Interest
(ANSIs) within 120m of the study area. There are minor impacts to vegetation due to
construction of the road widening.
11.0 MISCELLANEOUS
11.1 DESIGN Code
The design of the bridges and retaining walls will be undertaken in accordance with the
CAN/CSA-S6—19 Canadian Highway Bridge Design Code (CHBDC), Ministry of Transportation
of Ontario’s "Structural Manual", and all other current directives and standards.
11.2 ACCESS to the Site
The site is readily accessible from Ninth Line. The number of traffic lanes will be maintained on
Ninth Line throughout the construction. A traffic staging plan will be developed during the
detailed design in consultation with the City of Mississauga and Peel Region.
11.3 PROPERTY
Property acquisition is anticipated on either side of the Ninth Line within the project limits.
11.4 CONCRETE
All cast-in-place concrete will be class C—1 concrete as per CSA A23.l.
11.5 REINFORCING Steel
Stainless steel reinforcement will be used in areas of the components where their surfaces are
within the splash zone.
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
11City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
For all other components, black steel (Grade 400W) will be used as specified in Section 12 of
the MTO Structural Manual and the MTO Bridge Office Memorandum dated November 22, 2010
“Reinforcing Steel”.
11.6 PARAPET Wall and Railing
Parapet wall and railing in accordance with MTO standard structure drawing of SS 110-83 is
provided for combination traffic/bicycle rail as shown in the General Arrangement (GA) drawing.
Alternatively, since the bridge is being overtopped during flood condition we can consider
providing a modified four tube railing on multi-use path, TL-4 (SS 110-46) to permit
unobstructed flow water.
11.7 CATWALK FOR WILDLIFE PASSAGE
Requirement of a catwalk for small to medium wildlife passage across Ninth Line shall be
confirmed in both the existing/proposed culvert structure during Detailed Design.
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
12City of Mississauga | Ninth Line Municipal Class EA
Structural Design Memo – Ninth Line at Sixteen Mile Creek Bridge
A
Appendix
hdrinc.com 100 York Boulevard, Suite 300, Richmond Hill, ON, CA L4B 1J8
(289) 695-4600
13NG
G
POST FENCE
I
G
G
G
H SERVICE DATA
G
METAL AND BR
G
E
N
G
I
CK
C O NC .RETAI H SERVICE DATE INIT. SERVICE DATE INIT.
T
CONSTRUCTION
H
S
E
METRIC SAN. SEWERS GAS MAINS
T H
ED
'
IX CR
R
F
O
T
R
K
G
STM. SEWERS BELL U/G CABLE
9
L
N
'
E EE
E
O
NORTH
E
C
WM WATERMAINS HYDRO U/G CABLE
W
O
N K
2
9
E
LL
N
.
.
F
D
300 M.O.E. ROGERS U/G CABLE
DIMENSIONS ARE IN METRES AND/OR
G
M
-
W
E
G RASS
O
I
G RASS
L
REVISIONS
AT
E
O
MILLIMETRES UNLESS OTHERWISE SHOWN
C O NC . W A
C
F
ER
G RASS
DEW ALK
DATE DETAILS INIT.
W
R
E
A
T
T
E
G RASS
R
7500 28985 7500
E
REMOVE EXIST. CONCRETE
VE
R
PARKGATE DRI
RETAINING WALL CONCRETE BOX CULVERT RETAINING WALL SLOPE, REINSTATE AFTER
G RASS
CULVERT CONSTRUCTION
C
PA
(TYP.)
N
NEW 3 CELL
C O N C . SI
O
CONCRETE BOX
CULVERT EXTENSION
C
NEW RETAINING WALL
(TYP. 4 TOTAL)
NOTES
,
WM
G RASS
300
ALT
1. DESIGN OF THE CIP CONCRETE CULVERT EXTENSION,
SIDEWALK HEADER WALLS AND RETAINING WALLS SHALL BE IN
6100
6000 6000 ACCORDANCE WITH THE CANADIAN HIGHWAY BRIDGE
,
APPROACH DESIGN CODE, CAN/CSA-S6-14.
H
CYCLE TRACK APPROACH
LIVE LOAD SHALL BE CL-625-ONT.
SLAB (TYP.) SLAB (TYP.)
ASP
-
2. SEE ROADWAY DRAWINGS FOR ALIGNMENT AND PROFILE
,
CONC.SI
DEWALK DETAILS.
0 3. EXISTING UTILITIES MAY BE IN CONFLICT WITH NEW
0
6
16400
CULVERT EXTENSION
ASPHALT REMOVE EXIST. PARAPET WALL ASPHAL
AND RAILING (TYP.)
T 4. CLEARANCE HEIGHT FOR THE WILDLIFE CROSSING
CONST.
10300
0 CATWALK SHALL BE PROVIDED BY THE NATURAL
JOINT 0
SAN 300 4
HERITAGE SUB DURING THE DETAILED DESIGN STAGE.
EW
0
7 REMOVE EXIST. RETAINING WALL
,
SK
GRAVEL (TYP. 4 TOTAL)
4
250 FDC
750 FDC ASPHALT 0 ASPHAL
°
0
5 T
56
STM
SAN900
0
STM
4
0
0
7 NTH LNE
I
STM L NI
C
675
4
4
13+500
SAN
6000 0
900
EVCS:13+462.16
:13+422.21
0 6000
0 0
BVCS:13+382.25
7 0
ELEV:191.170
EXIST.
ELEV:190.970
5
0
APPROACH EXIST.
ELEV:190.870
REMOVE PARTIAL EXIST.
0
SLAB APPROACH
W.P.#1 APPROACH SLAB AND
NORTH SOUTH
12300
4
16100
SLAB
0 STA. 13+481.33 RECONSTRUCT APPROACH SLAB
2
0
6 TO FACILITATE NEW ROAD WIDENING
x
T/P EL. 190.875
PVI
CONST. (TYP.)
0
JOINT
0
0
9
9
-7
G
CONC.SI
DEWAL
GRASS
K
50%
3
-0.
0.
M
CYCLE TRACK 76
&
C O NC RETE
%
C O NC RETE
&
T
-
-
RE FENCE
WI G
S
3800
POST AND SIDEWALK
LVC=79.91m
K=63.0
PROFILE
. CONTROL
G RASS
'
. G (T/P)
CL
13+500
C
2 EXIST. 3 CELL C CULVERT
: L
U
1 STA. 13+481.33
L
CONCRETE 1
1 :
C
V
2
BOX CULVERT
E
- .
R
1
T
3+
NEW 3 CELL NEW NINTH LINE PROFILE
PRC
437.
1
CONCRETE BOX CULVERT
N.T.S.
3+
LOW FLOW EXTENSION
CHANNEL .
500
83
PLAN
G
SCALE 1:200
43985
NORTH SOUTH
REGIONAL STM
ROADWAY PROFILE 50 YEAR STM 100 YEAR STM 3 CELL REINFORCED PARAPET WALL
EL. 191.37
CONTROL EL. 189.56 EL. 189.72 CONCRETE BOX CULVERT WITH RAILING
(T/P) STEEL BEAM GUIDERAIL
192 PROPOSED GROUND & CHANNEL ANCHORAGE
WL (TYP. AT CORNERS)
191
EXP. EXP. 2
190 2 WL WL
JOINT JOINT
1 1
RETAINING WALL RETAINING WALL
CATWALK FOR
189 C
L CREEK/CULVERT WILDLIFE
PASSAGE
188 TOP OF CULVERT TOP OF
FOOTING INVERT FOOTING
WL
187
186
100mm THICK WORKING SLAB LOW FLOW APRON WALL 100mm THICK WORKING SLAB NOT FOR CONSTRUCTION
CHANNEL
185
1 SECTION
- SCALE 1:100
DESIGN BY APPROVED BY
NOTE:
* DENOTE DIMENSIONS AND CROSS-FALL
MEASURED RADIAL TO C
L NINTH LINE
** DENOTE DIMENSION MEASURED
SS
PERPENDICULAR TO LC NINTH LINE AT C
L EXISTING AND NEW
C
L OF CULVERT NINTH LINE
** 16100 16400 C.E.T.
DEPARTMENTAL APPROVAL
VARIES 2000 2000 200 1500 3500 3350 3350 1650 3350 3500 1500 200 2000 2000 VARIES
WEST * 1000(MIN) S/W CYCLE SHLD MEDIAN SHLD CYCLE S/W 1000(MIN) EAST
50 250 TRACK TRACK 250 50
N)
ES
ASPHALT AND WATERPROOFING
500(MI
ES
ES
REMOVE EXIST. REMOVE EXIST.
VARI
SYSTEM (VARIES) PROFILE CONTROL
N)
VARI
VARI
PARAPET WALL PARAPET WALL
PARAPET WALL PARAPET WALL
500
(MI
WITH RAILING (T/P) WITH RAILING SILVIO CESARIO P.ENG.
*2% *2% *2% *2%
HEADER WALL HEADER WALL
EXIST. GROUND
UPSTREAM INV.
DOWNSTREAM INV. CONST. JOINT
CONST. JOINT EL. 187.38
2400
PRODUCED FOR - T&W, ENGINEERING AND WORKS
2400
2400
EL. 187.230
MATCH EXIST. MATCH EXIST. 100 York Blvd., Suite 300,
STREAM BED Richmond Hill, ON, L4B 1J8
EL. 187.25± FLOW EL. 187.35± 0.44%
0.44% Ph. (289) 695-4600
Fax. (289) 695-4601
APRON WALL
APRON WALL
600
600
REMOVE PARTIAL REMOVE PARTIAL NINTH LINE
EXIST. CULVERT EXIST. CULVERT
4585 (SKEW) 27260± (SKEW) 7360 (SKEW) 300mm GRANULAR 'A'
300mm GRANULAR 'A'
BEDDING
SIXTEEN MILE CREEK CROSSING
BEDDING NEW EXTENSION EXISTING CONCRETE BOX CULVERT NEW EXTENSION
GENERAL ARRANGEMENT
2 SECTION SCALE AS SHOWN AREA PROJECT No. 10214514
- SCALE 1:100 C.A.D.D. BY MN CHECKED BY GH PLAN No.
DATE APRIL 12, 2021 SHEET S01You can also read
