Urbanova Interchange in Terrebonne — project and construction-site tracking

Summary

This brief provides longitudinal documentary tracking of the project. It records publicly available information on the scope, costs, contracts, schedule and work progress in order to preserve a verifiable project history. It is neither a site inspection, an independent cost estimate nor an engineering opinion.

The Urbanova Interchange project includes an overpass above Highway 640, four ramps, the extension of Urbanova Avenue and access to the industrial park. The City of Terrebonne is the project sponsor and bears the project costs, while the MTMD is responsible for delivering the project. The City currently puts the total investment at $87 million. Municipal records document an increase in the borrowing by-law allocated to construction, from $56.29 million to $87.075 million in 2023. Unexploded ordnance discovered within the right-of-way of the future north ramps also required remediation work, carried out in June and July 2026. The main construction tender call is now underway.

Documentary updates

Tender call — new deadline of November 11, 2026

Documentary update · November 6, 2026

Notice 2503-21-1103 (SEAO reference 20165613), checked on November 6, confirms that bids must be received by 2 p.m. Quebec time on November 11, 2026. This deadline replaces November 4, 2026. CanadaBuys lists an amendment dated November 3, 2026.

The reason for the extension and its effect on the construction schedule remain unknown.

Official SEAO notice · CanadaBuys notice

Tender call — new deadline of November 4, 2026

Documentary update · October 28, 2026

Tender call 2503-21-1103 (SEAO reference 20165613) now shows a bid submission deadline of November 4, 2026, rather than October 28. CanadaBuys shows an amendment dated October 23, 2026.

The reason for the postponement and its effect on the work schedule remain unknown. No connection to the remediation work or gas line has been established.

Preventive follow-up: after the new deadline, check the bid opening, submitted amounts and award decision, along with any schedule changes announced by those responsible.

Tender call — new deadline of October 28, 2026

Documentary update · October 22, 2026

Official data published by CanadaBuys for tender call 2503-21-1103, SEAO reference 20165613, indicate an amendment dated October 20, 2026 and a new deadline of October 28, 2026. The previous deadline was set for October 26. This is another shift in the bid closing date; no award has yet been documented.

Preventive follow-up: after October 28, check the bid opening, number of bidders, submitted amounts and award decision. Keep each deadline separate in order to document the contracting sequence.

Unknowns: the reason for this new amendment and its possible effect on the start or schedule of the work have not been specified. The sources reviewed establish no connection to the UXO work or the gas line relocation.

Tender call — new deadline of October 26, 2026

Documentary update · October 17, 2026

Official SEAO notice 2503-21-1103, reference 20165613, now shows a bid receipt deadline of October 26, 2026, no later than 2 p.m., Quebec legal time. This deadline replaces the October 19 date recorded in the previous update. CanadaBuys shows an amendment dated October 13, 2026.

Concrete follow-up: retain the versions of the notice and addenda, then check the bid opening and award as of this new deadline. The postponement documents a change to the contracting schedule; its effect on the construction site and commissioning remains to be confirmed.

Unknowns: reason for the postponement and consequences for the construction schedule. The notices reviewed establish no causal link to the UXO work.

Sources: SEAO — notice 20165613 · CanadaBuys — October 13 amendment and October 26 deadline.

History — previous deadline

Tender call — closing postponed to October 19, 2026

Documentary update · October 7, 2026

Tender call 2503-21-1103 (SEAO reference 20165613), for construction of the Urbanova/Highway 640 Interchange in Terrebonne, now shows a closing date of October 19, 2026, rather than October 5, 2026 recorded in the previous update. CanadaBuys shows an amendment dated September 29, 2026. This new deadline is also repeated in SEAO data published by Alliance Optima.

Concrete follow-up: retain the addendum and the new deadline in the file, then check the bid opening and award before updating construction stages and anticipated disruptions.

To be confirmed: the reason for the postponement and its effect on the start of work or commissioning. These notices establish no connection to UXO remediation work.

Sources: CanadaBuys — deadline and amendment date · Official SEAO notice — reference 20165613 · Alliance Optima — republication of SEAO data.

UXO mandate — decision confirmed and site findings

On September 29, 2026, city council unanimously adopted resolution 451-09-2026, authorizing an additional expenditure of $583,362.71 for Indy-Co inc.’s SA25-3062 contract. The authorized total reaches $2,433,418.17, including taxes. The registry extract was certified as true on September 30. The public file was consulted on October 3; its exact posting date is not indicated. This confirmation replaces the reservation regarding adoption made in the October 1 update below. These amounts concern the UXO mandate and do not allow the total cost of the interchange to be recalculated.

Documented findings: the decision summary indicates that additional checks confirmed a significant presence of unexploded ordnance on MTMD property, at the location of future work, and that detection and exposure work must continue. Near the Grand Ruisseau branch, preparation of a wooded area and expanded investigations required environmental authorization for emergency work, notably in connection with future culverts and Énergir’s work. Since the depth and installation method of the existing gas line were unknown, a special work method was developed by the contractor and approved by Énergir.

Value for preventive follow-up: verify that the areas actually investigated correspond to the limits of excavations, culverts and relocated utilities. Record discrepancies between plans and field conditions, specialized validations and authorizations before considering an area cleared. These findings alone do not support a conclusion that there was a missed prevention opportunity.

Unknowns and next follow-up: specify the boundaries of sectors still requiring treatment, obtain confirmation that they have been cleared and check for any documented effect on the schedule. The City’s general project page still indicates that remediation is complete: the area covered by this statement remains to be clarified. A potential claim of $171,144.27, including taxes, remains disputed and is excluded from the authorized expenditure. Council instructed the clerk’s office and legal affairs department to assess possible legal recourse or recovery from third parties; no recovery has been confirmed.

Sources: City council file of September 29, 2026, pp. 14 and 21–22; Meeting registry; General project status.

Earlier update · October 1, 2026 — documentary status before confirmation of the decision

UXO mandate — additional expenditure submitted to council

Item 18.1 on the agenda for the September 29, 2026 special meeting concerns authorization of an additional expenditure of $583,362.71 for contract SA25-3062, awarded to Indy-Co inc. for unexploded ordnance (UXO) technical services related to the Urbanova Interchange. The amount stated following this increase would be $2,433,418.17. The same item and amounts had already appeared on the September 15, 2026 agenda.

The December 2025 award file shows an expenditure of $1,681,868.60 and a contingency of $168,186.86, for an initial budget of $1,850,055.46. The proposed supplement represents about 31.5% of that budget, including contingency. These amounts concern the UXO mandate; they do not, by themselves, allow the total cost of the interchange to be recalculated.

Validation level: the agendas confirm that the request was presented. Adoption of the expenditure was not confirmed in the documents reviewed as of October 1, 2026. The detailed justification for the supplement and its possible effect on the schedule remain to be verified. The City also indicates that remediation work is complete.

Value for preventive follow-up: keeping separate records of field discoveries, quantities handled, specialized validations and contract amendments makes it possible to track the evolution of a construction constraint. In this file, the next follow-up is to obtain council’s decision and the justification for the supplement, then check for any documented effect on the main work.

Sources for this update: Agenda of September 29, 2026, item 18.1; Agenda of September 15, 2026, item 18.1; Award file of December 10, 2025 — SA25-3062; Tracking of municipal council decisions.

Report → Validation → Follow-up → Action

1. Report — long-term project

   The project has been developed since preliminary planning phases began in 2014, with the aim of creating a new interchange on Highway 640 in the Urbanova sector.

2. Validation — 2021 to 2026

   Municipal decisions, authorizations, preparatory work and public communications establish a documentary baseline regarding scope, funding and schedule.

3. Follow-up — September 2026

   Remediation is complete, relocation of a gas line is underway and the MTMD tender call for construction work is active.

4. Action — next milestone

   Document the bid opening, contract award, accepted amount, contractual schedule and actual start of construction.

Documented timeline

1. 2014–2021

   Preliminary planning phases, right-of-way acquisition, temporary ramps, environmental process and final preliminary design.

2. September 13, 2021

   The City awards GHD Consultants contract SA21-3045 for plans and specifications. Municipal documents indicate a contract of $1,218,620 plus contingency, for an initially announced total of $1,340,482.

3. September 12, 2022

   Adoption of By-law 865, providing for borrowing of $56.29 million for construction work.

4. December 11, 2023

   Amendment to By-law 865: the borrowing amount is raised from $56.29 million to $87.075 million, and the term is extended from 25 to 30 years.

5. Fall 2024–2026

   The discovery of unexploded ordnance within the right-of-way of the former Saint-Maurice firing range leads to surveys and site remediation.

6. June–July 2026

   The City indicates that remediation work was carried out without incident.

7. August–September 2026

   Relocation of a gas line under Énergir’s responsibility, presented as the final stage of preparatory work.

8. August 21, 2026

   The City announces the MTMD’s launch of the construction tender call. Public notice 2503-21-1103 remains active; the closing date shown in the contract data reviewed is October 5, 2026.

Facts supported by sources

• Terrebonne is the project sponsor and is responsible for its costs and schedule tracking.
• The MTMD is responsible for delivering the project and for the work tender call and supervision contract.
• The City currently presents the project as a total investment of $87 million.
• The borrowing by-law related to construction was amended in 2023 from $56.29 million to $87.075 million.
• Unexploded ordnance was discovered within the right-of-way of the future north ramps; remediation is indicated as complete.
• The main construction tender call is underway.

Reading of the file

This brief establishes a baseline before the main contract is awarded. The already documented evolution of municipal funding and addition of a remediation stage make it particularly useful to retain successive schedules, amounts and scope changes. Subsequent updates will make it possible to compare the project’s public parameters throughout delivery and preserve its chronology.

Undetermined elements

• The amount of the bid that will be accepted for the main work.
• The detailed contractual construction schedule.
• The interchange commissioning date.
• The precise financial effect of the discovery and removal of the ordnance on the project’s total cost.
• Any future change orders or additional expenses.

Next milestone

After the November 11, 2026 closing date, check SEAO for the opening of bids and the amounts submitted, then track the award decision. Keep the awarded amount and initial schedule for future reference.

Sources

1. City of Terrebonne — Urbanova Interchange, scope, responsibilities and schedule. View source ↗
2. City of Terrebonne — “Urbanova Interchange: the final stage of preparatory work is underway,” August 7, 2026. View source ↗
3. City of Terrebonne — “Urbanova Interchange: the tender call for the work has been launched,” August 21, 2026. View source ↗