Big River First Nation Reserve Drainage Re-Establishment

Big River First Nation is proposing a new clear span bridge over the Big River to replace the three existing 2.3 meter diameter culverts. The project will consist of removing existing culverts, excavating for a new channel bed to match existing upstream and downstream channel bed, installing 3:1 sloped embankments at the bridge armored with rip rap in and near the water to prevent erosion during high flows. Construction of the new bridge abutments and wing walls will occur at the top of the embankment. A new concrete superstructure will be erected over the water. The road elevation will be increased by approximately 1 meter. The bridge opening will be sized to pass the 1:100 year design flows without over-topping the roadway.

 

Work is planned to be completed in the summer/fall of 2024 when flow is at its lowest elevation. Excavation will occur to remove the existing culverts and to extend the channel through the road and to build the new abutments. The abutments will be constructed from driven steel pipe pile foundations. The expectation is that the river will continue to flow during construction, either by keeping the culverts in place and/or berming/dewatering the abutment portion only. The embankments on both sides will be re-graded to improve the existing hydraulic conditions and armoured with rip rap. This work will be completed with an excavator. Turbidity curtains will be placed in the stream as required during the embankment work. A new prefabricated concrete superstructure will be erected over the water on the new abutments. The abutment backing wall and wing walls will then be placed. The last items to be constructed will be the bridge rails and roadway tie-ins, followed by adjusting the road elevation to new grades with adjusted embankment grading, seeding and installation of erosion control blankets on all new and disturbed surfaces. The work is anticipated to be performed using heavy equipment such as tracked excavators, cranes, and skid steers.

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Latest update

The assessment is in progress.

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Key documents

Key documents
Document Number Document Title File Date
1 Notice of Intent -Start of Public Comment Period - April 16, 2024

Contacts

ISC-SKENV
Indigenous Services Canada
Alvin Hamilton Building, 1783 Hamilton Street
Regina, Saskatchewan S4P 2B6
Telephone: 306-581-3134
Email: isc-skenv@sac-isc.gc.ca


  • Location

    • Big River First Nation (Saskatchewan)
  • Nature of Activity

    • Bridges
  • Assessment Status

    In progress
  • Start Date

    2024-05-14
  • Proponent

    Big River First Nation
  • Authorities

    • Indigenous Services Canada
    • Transport Canada
  • Assessment Type

    Project on federal lands
  • Reference Number

    88496
Disclaimer

This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.

 

Nearby assessments

...within 200 kilometres
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