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I-75 / LAPLAISANCE ROAD
INTERCHANGE
RECONSTRUCTION
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PROJECT OVERVIEW
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PROJECT LIMITS
Lake Erie
Links of Lake
Erie Golf Course
adjacent to
project limits
Monroe
Township Fire
Station No. 2
Trout’s
Yacht
Basin
Monroe
Boat Club
Harbor
Marine
Monroe Charter Township
City of MonroeRamp E
Ramp D
Ramp C
Ramp B
Ramp A
LaPlaisance Creek
extends through
the project limits
Davis
Drain
Limited
ROW
Limited
ROW
BEGIN construction
limits along
LaPlaisance Road
END construction
limits along
LaPlaisance Road
Albain
Road
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PROJECT DETAILS
Interchange study completed to determine best
alternative for design and construction
Structure study approval from Federal Highway
Reconstruction of LaPlaisance bridge over I-75
Reconstruction of LaPlaisance Road interchange
Reconstruction of LaPlaisance Road
Reconfiguration of interchange
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March 5, 2021
Project Letting
Spring 2021 to Spring 2022
Construction!
PROJECT TIMELINE
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PROJECT NEED
Bridge and
pavement
condition
• LaPlaisance Rd bridge over I-75 and LaPlaisance Road
constructed in 1955
• LaPlaisance Rd interchange ramps reconstructed in 1974
Interchange
Modernization
• 25-year (2045) traffic projections
• Reconfiguration of interchange
• Shorter bridge to reduce upfront and future
maintenance costs
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SPECIFIC PROJECT
INFORMATION
(INTERCHANGE
RECONFIGURATION)
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LaPlaisance Road over I-75 (existing condition)
Bridge currently closed to traffic
Requires replacement due to
current condition
Existing 14 ft-3 inch (SB) minimum
posted underclearance
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LaPlaisance Road
and Ramps
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The existing interchange
operates at an acceptable
Level of Service (LOS)
LOS is a term used to describe the
operating conditions of a roadway
based on speed, travel time,
maneuverability, delay and safety
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Crash History (potential mitigation strategies)
Improved physical pavement condition
Operational improvement of ramp terminals (specifically SB exit ramp)
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PROJECT BENEFITS -
WHY REPLACE THE BRIDGE AND
RECONFIGURE THE INTERCHANGE?
PROMOTE BETTER TRAFFIC FLOW AND VEHICULAR
SAFETY
CONSTRUCTED WITH FUTURE PEDESTRIAN
CROSSING SAFETY IN MIND
BUILD AND MAINTAIN ONLY WHAT IS NEEDED
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Project Overview
(Proposed Interchange)
Roundabouts
constructed at the
ramp terminals
Eliminate
loop ramp
Reduce angle of
bridge to I-75 and
shorten length
Future ramp tie in
with roundabout
to reduce re-work
Overall reduced
interchange
footprint
Existing Interchange
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Additional advantages to the roundabout configuration:
✓ With stop condition at the terminals, the NB I-75 exit ramp operates at a LOS F
(roundabouts give the ability to keep traffic moving)
✓ Reduced future maintenance costs for the LaPlaisance bridge over I-75
✓ Eliminates NB I-75 exit ramp bridge over LaPlaisance Creek in the future
✓ Limited space available to upgrade geometrics in current configuration
Project Overview
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Proposed LaPlaisance
Road Bridge over I-75
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The proposed interchange
operates at an acceptable
Level of Service through
design year 2045
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Project Overview
(NB Roundabout)
Truck apron design
and constructed to
be driven on
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Project Overview
(SB Roundabout)
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OTHER FEATURES
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PEDESTRIAN
IMPROVEMENTS
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MAINTAINING TRAFFIC
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CONSTRUCTION
STAGE 1 (2021)
This project is proposed to be built in 4
construction stages
Construction:
✓ New LaPlaisance Bridge over I-75
✓ Northern roundabout
✓ Miscellaneous ramp and LaPlaisance
road work
Traffic:
✓ All lanes open on I-75
✓ All ramps open, except the loop ramp
✓ One NB lane open on LaPlaisance Road
Northern
Roundabout
LaPlaisance
Road bridge
over I-75
Loop ramp
closed
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CONSTRUCTION (2021)
Construction: LaPlaisance Bridge over I-75
Traffic: All lanes open on I-75. Shoulders closed.
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CONSTRUCTION
STAGE 2 (2021)
Construction:
✓ Ramps C and E
✓ LaPlaisance Road
✓ Continue bridge work
Traffic:
✓ I-75 traffic shifted to accommodate
ramp and bridge work
✓ Ramp C closed (detoured via Otter
Creek interchange)
✓ One NB lane open on LaPlaisance Road
LaPlaisance
Road bridge
over I-75
Ramp E
Ramp C
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CONSTRUCTION
STAGE 3 (2021)
Construction:
✓ Ramp D
✓ Southern roundabout
✓ Work along NB I-75 and finish bridge
Traffic:
✓ I-75 traffic remains shifted
✓ Close and detour LaPlaisance Road
✓ All ramps closed, except Ramp A, SB only
✓ Ramp E traffic detoured via Otter Creek
interchange
✓ Ramp D traffic detoured via Front Street interchange
Ramp D
Southern
Roundabout
Ramp A
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CONSTRUCTION
STAGE 4 (2021)
Construction:✓ Continue construction of LaPlaisance Rd
✓ Construct Ramp A
✓ Remove loop ramp
✓ Remove the existing bridge over I-75
Traffic:
✓ I-75 traffic remains shifted
✓ LaPlaisance Road remains closed
✓ All ramps closed and detoured
✓ Ramp A traffic detoured via Otter Creek Interchange
Ramp A
Remove
loop ramp
Existing bridge
demo
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CONTACT AND FEEDBACK
Aaron Jenkins, Communications Specialist
Email: [email protected]
Phone: 517-750-0406
Monica Monsma, Public Involvement Specialist and
Hearings Officer
Email:[email protected]
Phone: 517-335-4381