Provide a construction for the Grimsby Go Station starting in July 2026 and completion late summer early fall 2027. 

Yes. Based on the July 2026 construction start and the currently stated summer 2027 opening target, I would structure the Grimsby GO Station project as an approximately 14-month fast-track construction program, with substantial commissioning and contingency time built in before an August/September 2027 revenue-service opening.

The official project scope includes a single GO platform, station infrastructure, approximately 220 parking spaces, a bus loop, pick-up/drop-off areas, customer shelters, fare-payment equipment, real-time information systems, bicycle facilities and pedestrian access. 

Proposed Grimsby GO Station Construction Schedule

Start: July 2026
Target substantial completion: July/August 2027
Target opening: Late August–September 2027
Overall duration: ~14 months

High-level Gantt

Work Package	Jul 26	Aug	Sep	Oct	Nov	Dec	Jan 27	Feb	Mar	Apr	May	Jun	Jul	Aug/Sep
Mobilization/site setup	■	■
Survey/layout	■	■
Clearing/site preparation	■	■	■
Earthworks/grading		■	■	■	■
Drainage/stormwater		■	■	■	■	■
Utilities		■	■	■	■	■	■	■
Parking lot/subgrade				■	■	■	■	■	■
Platform foundations				■	■	■
Platform construction					■	■	■	■	■
Station building						■	■	■	■	■
Canopy/shelters								■	■	■	■
Bus loop					■	■	■	■	■	■
Kiss & Ride						■	■	■	■
Pedestrian facilities							■	■	■	■	■
Track/rail interface								■	■	■	■	■
Signals/communications									■	■	■	■	■
Electrical systems							■	■	■	■	■	■	■
Landscaping										■	■	■	■
Paving/line painting											■	■	■
Station equipment											■	■	■
Testing & commissioning												■	■	■
Staff training/ORAT													■	■
Opening														◆

1. July–August 2026 — Mobilization & Site Preparation

July 2026

• Contractor mobilization
• Site offices and construction fencing
• Construction access roads
• Survey control and detailed layout
• Utility locating
• Environmental protection measures
• Initial clearing and stripping
• Temporary drainage
• Procurement of long-lead materials

August 2026

• Complete clearing/site preparation
• Strip topsoil
• Begin mass excavation
• Establish rough grades
• Begin stormwater infrastructure
• Begin underground utility relocations
• Establish permanent construction access

This is consistent with the project actually breaking ground on July 7, 2026. Metrolinx had already undertaken earlier site cleanup and preparation activities in spring 2026. 

---

2. September–November 2026 — Earthworks, Drainage & Foundations

September

• Major earthworks
• Cut/fill operations
• Fine grading
• Storm sewers
• Underground electrical/communications
• Water servicing
• Platform excavation
• Begin parking-lot subgrade

October

• Complete major grading
• Complete underground drainage
• Platform foundations
• Station-building foundations
• Bus-loop subgrade
• Parking-area subgrade
• Retaining structures if required

November

• Platform structural work
• Station building structural framing
• Bus loop construction
• Parking lot base
• Utility connections
• Pedestrian-route construction

Key milestone:

By November 30, 2026: site should be substantially out of the earthworks phase and into vertical/structural construction.

---

3. December 2026–February 2027 — Station & Platform Construction

December

• Station building structure
• Roof structure
• Platform structure
• Platform drainage
• Canopy foundations
• Bus-loop construction
• Parking lot base

January 2027

• Enclose station building
• Mechanical rough-ins
• Electrical rough-ins
• Platform finishing
• Canopy installation begins
• Customer shelter construction
• Communications infrastructure

February

• Building envelope substantially complete
• Interior partitions
• Mechanical/electrical systems
• Platform finishes
• Canopy completion
• Bus-loop paving
• Parking lot curbs
• Sidewalks

Critical milestone:

February 28, 2027 — station should be weather-tight and platform substantially complete.

This gives roughly six months from the July start to get the project through the major civil/structural phase.

---

4. March–April 2027 — MEP, Rail Systems & Site Development

March

• HVAC
• Electrical distribution
• Lighting
• Fire protection
• Communications
• CCTV/security
• Fare equipment infrastructure
• Passenger-information systems
• Platform lighting
• Rail-interface work
• Final bus-loop construction

April

• Station interior finishes
• Washrooms
• Staff areas
• Customer areas
• Fare-payment equipment
• Digital information displays
• CCTV
• Emergency systems
• Platform furniture
• Bicycle parking
• Pedestrian connections

At this point, the project should transition from construction to systems integration.

---

5. May–June 2027 — Paving, Finishes & Equipment

May

• Asphalt parking areas
• Final bus-loop paving
• Pick-up/drop-off area
• Final sidewalks
• Accessibility routes
• Landscaping
• Lighting poles
• Signage
• Station furniture
• Customer shelters

June

• Pavement markings
• Traffic signs
• Wayfinding
• GO signage
• Landscaping
• Final electrical connections
• Communications commissioning
• Fare equipment commissioning
• Passenger information systems

Milestone:

June 30, 2027 — physical construction substantially complete.

---

6. July 2027 — Testing & Commissioning

This month is particularly important.

Building systems

• HVAC testing
• Fire alarm testing
• Emergency lighting
• Electrical testing
• Security systems
• CCTV
• Communications

Passenger systems

• Fare equipment
• PRESTO-related equipment
• Customer information screens
• Public-address system
• Accessibility systems

Site

• Parking
• Bus loop
• Kiss & Ride
• Pedestrian routes
• Bicycle facilities
• Lighting
• Drainage

Rail interface

• Platform safety systems
• Track/interface inspections
• Signalling/interface testing
• Communications
• Safety certification

Target:

🟢 July 31, 2027 — Substantial Completion

---

7. August 2027 — Operational Readiness

I would not plan to open the station immediately after physical construction.

Use August as a dedicated ORAT — Operational Readiness, Activation and Transition period.

Activities:

• Final inspections
• Deficiency correction
• Safety certification
• Emergency exercises
• Staff training
• Train operating procedures
• Bus integration
• Passenger-flow testing
• Accessibility verification
• Wayfinding verification
• Night-time lighting tests
• Security testing
• Full simulated operating day

Target

August 15–20, 2027: Ready for service

August 20–31, 2027: Final contingency window

---

8. September 2027 — Revenue Service

Recommended opening window

Late August to early September 2027

I would establish:

Target Opening: September 2027

with an internal project completion date approximately 4–6 weeks earlier.

That gives Metrolinx some protection against weather, construction deficiencies, commissioning problems or rail-interface issues.

The Town of Grimsby currently describes the expected opening as summer 2027, while Ontario announced the project construction start in July 2026. 

---

Critical Path

For a project this compressed, I would monitor these activities weekly:

Site preparation → Earthworks → Drainage/utilities → Foundations → Platform → Station building → MEP → Rail interface → Electrical/communications → Paving → Systems commissioning → Safety certification → Operational readiness → Opening

The most important potential schedule threats are:

1. Rail/corridor interface work
2. Utility conflicts
3. Winter weather
4. Long-lead electrical/communications equipment
5. Platform/canopy construction
6. Parking and roadwork
7. Systems integration
8. Safety approvals and commissioning
9. Deficiency correction

Recommended schedule contingency

I would build approximately 4 weeks of float into the July–September 2027 period rather than treating September as the construction completion date.

Baseline:

• July 7, 2026: Construction start
• November 2026: Civil works substantially advanced
• February 2027: Building/platform substantially complete
• April 2027: Systems installation
• June 2027: Physical construction substantially complete
• July 2027: Testing/commissioning
• August 2027: Operational readiness
• Late August/September 2027: GO station opens

This is a realistic fast-track schedule, rather than an official Metrolinx contractor schedule. The public sources confirm the July 2026 construction start and summer 2027 target, but they do not publish the contractor’s detailed activity-by-activity baseline schedule. 

If you want, I can also produce a much more detailed Grimsby GO Station Gantt chart with 50–75 individual construction activities, predecessors, durations, critical path and monthly percentage-complete targets from July 2026 through September 2027—similar to the detailed Milton 11 school schedule we discussed.