CAMPBELLFORD BRIDGE REPLACEMENT FEASIBILITY STUDY
REVIEW OF FINAL TWO OPTIONS WTH MODIFIED 3 LANE ALTERNATIVE AUGUST 2011
AUGUST 2011
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
PREFERRED OPTIONS DETERMINED BY STEERING COMMITTEE
g Committee Meeting
g on June 24,
At the last Steering
2011, committee members choose the preferred
options within the 11 alternatives presented by
GENIVAR 2 options were chosen.
GENIVAR.
chosen
Widen/Upgrade 3 Widen/Upgrade
3
Lane Bridge Matching Centreline
Twin Existing Structure to the North
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 2
ALTERNATIVE II‐2N TWINNING THE STRUCTURE TO THE NORTH
ADVANTAGES
Existing Bridge to be used as a detour during the construction of a new f
bridge,
Traffic continues to use downtown crossing during
downtown crossing during construction,
Final configuration provides 4 lanes of traffic d
l
f ff
Potential to enhance the downtown community,
Potential for the addition of parking in the locations of removed buildings,
Construction cost is for a new 2 lane bridge
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 3
ALTERNATIVE II‐2N TWINNING THE STRUCTURE TO THE NORTH
DISADVANTAGES
Roadway re‐alignment required at the intersections to join intersections to join
connecting roads to the new bridge,
Removal of Buildings beyond Queen St./Grand Rd and Front /
Street,
Loss of on‐street parking due to widened y,
connection roadways,
Loss of Housing and Businesses due to
Businesses due to building removals,
Requires the replacement of the existing bridge in the (
future (construction and economic impacts).
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 4
ALTERNATIVE III‐3b /
WIDENING/UPGRADING THE EXISTING BRIDGE TO 3 LANES ADVANTAGES
Existing Bridge used as a detour during May –
a detour during May October,
Final configuration provides 3 lanes of
provides 3 lanes of traffic
Only buildings at corners of bridge are required to be removed.
Less removal of on‐
street parking than Alternative II‐2N,,
Design allows for the utilization of the g
g ,
existing bridge,
Construction cost at the lowest comparable costs to the other alternatives.
lt
ti
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 5
ALTERNATIVE III‐3b /
WIDENING/UPGRADING THE EXISTING BRIDGE TO 3 LANES DISADVANTAGES
Off site detour is required from October
required from October to May,
Traffic will not be routed through the downtown crossing during October to May, Length of construction is longer than Alternative II‐2N.
Loss of Housing and Businesses due to building removals (less
building removals (less removal than Alternative II‐2N),
Construction to begin in 5 years to utilize g
g
existing bridge
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 6
CONSTRUCTION METHODS Is there a different construction method that has Is
there a different construction method that has
the following advantages?
– On‐site detour that is not temporary
On site detour that is not temporary
– No building removal beyond Front Street and Grand Road/Queen Street
Grand Road/Queen Street.
Suggestion – Rapid Lift Technology (Sliding Suggestion
Rapid Lift Technology (Sliding
Method) such as Trent Bridge Replacement
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 7
CONSTRUCTION METHODS RAPID LIFT REPLACEMENT ‐ PROCEDURE Traffic to remain on the existing bridge,
g
g ,
•
•
•
•
•
Buildings at the three corners of the bridge would be removed due to the final configuration of the bridge. These building removals will allow for construction access and mobilization area for the new bridge construction.
g
Strengthening of existing piers/abutments and extension of the piers/abutments to the south,
New concrete piers and footings would be constructed on the north side
New concrete piers and footings would be constructed on the north side of the bridge.
New superstructure consisting of a steel superstructure with concrete deck would be constructed on the new piers/abutments
deck would be constructed on the new piers/abutments.
Construction of beam and sliding system,
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 8
CONSTRUCTION METHODS RAPID LIFT REPLACEMENT ‐ PROCEDURE Traffic to be detoured to new bridge,
g ,
•
•
Existing bridge superstructure to be removed
New structure slide onto existing piers
New structure slide onto existing piers,
Traffic rerouted onto new 3 Lane structure.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 9
CONSTRUCTION METHODS /
RAPID LIFT REPLACEMENT – ADVANTAGES/DISADVANTAGES Advantages
g
•
•
No building removal beyond Front Street and Grand Road/Queen Street,
Existing bridge and new bridge used as detours, no temporary detour required.
required
Disadvantages
•
•
•
•
Additional piers required to be built to support bridge temporarily (Cost),
Cost of sliding mechanism, Additional roadway work required at intersection for temporary condition,
y
q
p
y
,
All work required in 10 years for traffic requirements, existing bridge will still have some service life remaining.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 10
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE Traffic to remain on the existing bridge,
g
g ,
•
•
•
Buildings at the three corners of the bridge would be removed due to the final configuration of the bridge. These building removals will allow for construction access and mobilization area for the new bridge construction.
g
Strengthening of existing piers/abutments and extension of the piers/abutments to the north and south,
New minimum 2 Lane post‐tensioned
New minimum 2 Lane post
tensioned concrete bridge with sidewalk concrete bridge with sidewalk
constructed on pier extensions to the north, August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 11
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE Traffic to be detoured to new bridge,
g ,
•
•
Existing bridge superstructure to be removed
New post tensioned concrete superstructure constructed on existing
New post‐tensioned concrete superstructure constructed on existing reinforced and south extension piers/abutments,
Traffic rerouted onto new Modified 3 Lane structure with recreational facility and wide sidewalk on the north.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 12
CONSTRUCTION METHODS /
MODIFIED 3 LANE BRIDGE ALT. – ADVANTAGES/DISADVANTAGES Advantages
g
•
•
•
•
No building removal beyond Front Street and Grand Road/Queen Street,
Existing bridge and new bridge used as detours, no temporary detour required.
required
Pier extensions are reduced by 8.5m from 20m to 12.5m.
No sliding mechanism or other Rapid Lift Replacement technology required.
required
Disadvantages
•
All work required in 10 years for traffic requirements, existing bridge will still have some service life remaining.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 13
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE – OPTION 2 Can we overcome this disadvantage?
g
•
•
•
Stage 1 construction (construction of minimum 2 Lane bridge north of existing bridge) to occur in 10 years.
Interim configuration using both new bridge and existing bridge for 10
Interim configuration using both new bridge and existing bridge for 10 years.
Stage 2 construction (existing bridge removal and construction of new bridge) to occur in 20 years
bridge) to occur in 20 years. The interim configuration will pose some structural challenges as well as traffic configuration challenges
traffic configuration challenges.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 14
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE – OPTION 2 August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 15
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE – OPTION 2 August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 16
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE – OPTION 2 August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 17
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE – OPTION 2 August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 18
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE – OPTION 2 August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 19
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE – OPTION 2 August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 20
CONSTRUCTION METHODS MODIFIED 3 LANE BRIDGE ALTERNATIVE – OPTION 2 Can we overcome this disadvantage?
g
•
•
•
Stage 1 construction (construction of minimum 2 Lane bridge north of existing bridge) to occur in 10 years.
Interim configuration using both new bridge and existing bridge for 10
Interim configuration using both new bridge and existing bridge for 10 years.
Stage 2 construction (existing bridge removal and construction of new bridge) to occur in 20 years
bridge) to occur in 20 years. The interim configuration will pose some structural challenges as well as traffic configuration challenges
traffic configuration challenges.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 21
PREFERRED OPTIONS From Steering Committee (June 24, 2011
Widen/Upgrade 3 Lane Bridge Matching Centreline
• Critical Considerations
• Time for Construction Planning (including EA plan and process, obtaining g
g)
g
funds, detailed design and contract tendering) is longer than the time required to start construction due to engineering design
• Alternative Requires Temporary Detour
T i E i ti St t
Twin Existing Structure to the North
t th N th
• Critical Considerations
• Further investigation required to address the impact of housing removal • Further investigation required to address the impact of loss of business August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 22
MODIFIED 3 LANE STRUCTURE REVIEW OF CRITICAL CONSIDERATIONS
Time for Construction Planning
• Existing Bridge is not utilized in final design. Construction can begin in 10 years
Alternative Requires Temporary Detour
• No additional Detour Structure is required.
• Traffic will be maintained on existing bridge with minor modifications while Stage 1 construction is completed.
• Traffic will be maintained on the Stage 1 bridge while Stage 2 is completed.
Impact of housing removal and loss of business • Building removal is limited to the quadrants immediately adjacent to the bridge.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 23
CONSTRUCTION START
Twin Existing Bridge
– North Side
•Build new (2 lane) bridge ld
( l
)b d
in 10 years using existing bridge as detour.
•Replace Existing bridge in y
20 years at end of service life using new bridge as detour
Widen/Upgrade Existing
Bridge – 3 Lanes
Modified 3 Lane Bridge
Option 1
Option 2
•Upgrade/Widen bridge in 5 d / d b d
years. •Construction would commence in 2 years. •Requires detour structure
q
•Extend service life of existing bridge to 75 years. •Build new 3 lane bridge ld
l
b d
with recreational facility in 2 stages in 10 years.
•First stage to use existing g
g
bridge as detour bridge •Second stage to use Stage 1 bridge as detour. •Build new (narrow 2 ld
(
lane) bridge in 10 years using existing bridge as detour.
•Construct Stage 2 in 20 g
years at end of service life Stage 1 bridge as detour
Traffic Capacity at the intersections at the ends of the bridge will reach
capacity in 10 years.
Usable Existing Bridge Service Life is 20 years.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 24
BUILDING REMOVAL REQUIRED
Twin Existing Bridge
– North Side
2Buildings
ld
at Northwest h
and Northeast corners are to be removed.
•Some buildings west of Q
Queen Street on the north are required to be removed.
•Some buildings east of Front Street on the north are required to be
are required to be removed. •Building at Southeast corner of the bridge to be removed for the construction in 20 years.
Widen/Upgrade Existing
Bridge – 3 Lanes
•Buildings
ld
at Northwest, h
Northeast and Southeast corners of the bridge to be removed.
Modified 3 Lane Bridge
Option 1
Option 2
•Buildings
ld
at Northwest, h
Northeast and Southeast corners of the bridge to be removed.
•Buildings
ld
at Northwest h
and Northeast corners are to be removed.
•Building at Southeast g
corner of the bridge to be removed for the construction in 20 years.
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 25
CAMPBELLFORD BRIDGE REPLACEMENT FEASIBILITY STUDY
AUGUST 2011
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
ROADWAY DRAWINGS INTERIM TRAFFIC CONFIGURATION August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
Slide 27
CAMPBELLFORD BRIDGE REPLACEMENT FEASIBILITY STUDY
AUGUST 2011
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
COST ESTIMATES
Twin Existing Bridge
– North Side
Widen/Upgrade
Existing Bridge – 3
L
Lanes
$10 ‐ $12 million (10 years)
$11 ‐ $13 million (20 years)
$10 – $12 million (10 years)
Modified 3 Lane Bridge
u Co
s uc o in 10
0
Construction
Full
years
STRUCTURAL COSTS *
$16 ‐ $19 million (10 years)
S
ge 1 – 100 ye
Stage
yearss
Stage 2 – 20 years
$9 ‐ $11 million (10 years)
$9.5 ‐ $11.5 million (20 years)
COSTS TO ESTABLISH TEMPORARY DETOUR ROUTE
‐
$1.75 ‐$2 million (10 years)
‐
‐
ROADWAY COSTS *
$1 9 ‐ $2.5 million $1.9 ‐
$2 5 million
(10 years)
$0 5 ‐ $0.6 million $0.5 ‐
$0 6 million (10 years)
(10 years)
$1 3 ‐ $1.5 million $1.3 ‐
$1 5 million (10 years)
(10 years)
$1 3 ‐ $1.5 million
$1.3 ‐
$1 5 million (10 years)
(10 years)
NET PROPERTY (LOW/HIGH)
$1‐ $1.2 million $1.0 ‐ $1.2 million $1.0 ‐ $1.2 million
(0 – 10 years)
(0 – 10 years)
(0 – 10 years)
$0.75 ‐ $0.8 million (0–10 years)
$0.3 million (0 – 20 years)
TOTAL COST (LOW/HIGH)
$12.9‐15.7 million (10 years)
$11 – 13 million (20 years)
$13.25‐15.8 million (10 years)
* Engineering Design or Contract Administration not included.
Slide 29
$18.3‐21.7 million (10 years)
$11.05‐12.3 million (10 years)
$9.8– 11.8 million (20 years)
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee
CAMPBELLFORD BRIDGE REPLACEMENT FEASIBILITY STUDY
AUGUST 2011
August
g
22, 2011 – Meeting
g of the Trent River Crossing
g Steering
g Committee