Bridges


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You have selected this document because your project involves Bridge activities in or about a stream. Bridge activities include:

  • clear-span bridge construction, maintenance or removal;
  • bridge superstructure maintenance or repair;
  • ice bridge/winter ford/snowfill construction or maintenance; and/or,
  • clearing an obstruction from a bridge during a flood event.
Bridge activities can potentially have negative affects on riparian areas and fish and fish habitat. Advice should be obtained from a Qualified Professional or government agent for works having potentially negative impacts on a watercourse (e.g. rock armouring). When planning your project develop designs and select locations to minimize potential impacts to fish and fish habitat. If your works are outside the scope of this Guidebook then a MOE Approval application must be completed and DFO contacted to determine if a review and/or Authorization under the Fisheries Act is appropriate.

How to proceed with your Bridge Project

The following steps will help guide you through the provincial and federal Notification, Approval and/or Authorization process for Bridge Installation, Maintenance or Removal works:

Does your project involve Bridges in and about a stream?
Proceed to Introduction to reselect project appropriate activity
or
Contact your local MOE and/or DFO representative for assistance.
Have you considered all applicable Legislation, Regulations and Policies?
Proceed to Introduction for further details on Legislation, Regulations, Policies, Avoidance of HADD under the Fisheries Act and applicable Region Operational Statement(s)
Proceed to BMP Section of this document and apply relevant BMPs and Conditions to help your project adhere to the required Standards and Conditions.
Does your project meet all of the following Water Act Standard Conditions?

Clear Span Bridge Construction, Maintenance or Removal Water Act Standard Conditions:
  • the bridge and approach roads do not produce a backwater effect or increase the head in the stream;
  • equipment used for construction, including site preparation, maintenance or removal of the bridge, is situated in a dry stream channel or operated from top of bank;
  • the hydraulic capacity of the bridge is equivalent to the hydraulic capacity of the stream channel or is capable of passing the 1 in 200 year maximum daily flow and the height of the underside of the bridge is also adequate to provide free passage of flood debris and ice flows; and,
  • bridge materials meet the standards of the Canadian Standards Association, as applicable.
Ice Bridges, Winter Ford or Snow Fill Construction and/or Maintenance
  • work does not include realigning, dredging, placing fill or grading or excavating beds or banks of the watercourse;
  • withdrawal of any water will not exceed 10% of the instantaneous flow, in order to maintain existing fish habitat; and,
  • water flow is maintained under the ice.
Does your project meet all of the following Water Act Standard Conditions?

Clear Span Bridge Construction, Maintenance or Removal Water Act Standard Conditions:
  • the bridge and approach roads do not produce a backwater effect or increase the head in the stream;
  • equipment used for construction, including site preparation, maintenance or removal of the bridge, is situated in a dry stream channel or operated from top of bank;
  • the hydraulic capacity of the bridge is equivalent to the hydraulic capacity of the stream channel or is capable of passing the 1 in 200 year maximum daily flow and the height of the underside of the bridge is also adequate to provide free passage of flood debris and ice flows; and,
  • bridge materials meet the standards of the Canadian Standards Association, as applicable.
Ice Bridges, Winter Ford or Snow Fill Construction and/or Maintenance
  • work does not include realigning, dredging, placing fill or grading or excavating beds or banks of the watercourse;
  • withdrawal of any water will not exceed 10% of the instantaneous flow, in order to maintain existing fish habitat; and,
  • water flow is maintained under the ice.
Proceed to BMP Section of this document and apply relevant BMPs and Conditions to help your project adhere to the required Standards and Conditions.
Proceed to BMP Section of this document and apply relevant BMPs and Conditions to help your project adhere to the required Standards and Conditions.
For works only requiring attention before the next flood event, submit a Notification to MOE & DFO or Submit MOE & DFO Notification 72 hours following works that require immediate attention.

Best Management Practices

The following Best Management Practices (BMPs) are methods, that if followed, will help ensure your project minimizes potential impacts to fish and fish habitat and will provide a standard level of protection to the aquatic and terrestrial environment potentially affected by your project.

It is the responsibility of the proponent/developer to ensure that they are in compliance with all applicable legislation. There are three (3) types of BMPs you should consider:

  1. General BMPs and Standard Project Considerations applicable to any project;
  2. Bridge Installation, Maintenance or Removal specific BMPs (below); and,
  3. Supportive information applicable to project design, implementation and Bridge Installation, Maintenance or Removal techniques.

General Project BMPs and Standard Project Considerations

Please proceed to the General BMPs and Standard Project Considerations section to review considerations applicable to your project.

Bridge Installation, Maintenance or Removal Specific BMPs

To achieve the required Standards and objectives that your activity must meet, apply the following BMPs as applicable to your works. To reduce impacts on fish and wildlife habitats and populations, your bridge design and implementation must consider:

A. Clear-Span Bridge Maintenance or Removal and Ice Bridge/Winter ford/Snowfill Maintenance

Clear-Span Bridge Maintenance

Design

BR01 ensure General BMPs and Standard Project Considerations have been consulted and appropriately applied prior to, during and after commencement of work;
BR02 maintenance activities must adhere to Regional Timing Windows to prevent disruption of fish and wildlife habitat;
BR03 avoid work during wet and rainy periods;

Operational

BR04 install effective erosion and sediment control measures before starting work to prevent the entry of sediment into the watercourse. Inspect erosion and sediment control measures regularly to ensure they are functioning properly. Make all necessary repairs if any damage occurs and to maintain functionality;
BR05 conduct maintenance work by hand, where possible;
BR06 use hydroblasting or manual techniques, where possible, when removing road dirt, soluble salts and loose paint to minimize impacts to the watercourse;
BR07 use water without cleaning agent additives if grease film removal is necessary;
BR08 avoid use of toxic liquid paints, primers, solvents, degreasers and rust inhibitors;
BR09 ensure paint flakes, abrasive grits and abrasive/paint flake mixtures do not enter the watercourse as they may leach toxic heavy metals into receiving waters and/or be ingested by fish;
BR10 install ground covers and/or vertical drapes such as sheets of plastic or air-permeable cloth (e.g., burlap or canvas) prior to removal activities to capture falling debris. Floating barges may be deployed in watercourses to capture falling debris, such as paint flakes and dust;
BR11 waste materials collected during removal and application of protective coatings operations (e.g., blasting abrasives, paint particles, rust and grease) should be collected and retained for disposal at appropriate locations. Waste materials must not be deposited into watercourses or riparian areas;
BR12 minimize spill potential by storing, mixing and transferring paints and solvents on land;
BR13 equipment must never be cleaned in watercourses and contaminated water flowing from onshore cleaning operations must not enter the watercourse;
BR14 when taking water from a watercourse, ensure pump hoses are equipped with an appropriate device to avoid entraining fish. Guidelines to determine the appropriate mesh size for intake screens may be obtained from DFO (Freshwater Intake End-of-Pipe Fish Screen Guidelines 2.93MB PDF) and Short Term use application may be obtained from MOE (Water Act Section 8, Short Term Use of Water Approval Application). Avoid using small streams and wetlands as a water source;
BR15 adequately seal drains and any open joints on the bridge deck before sweeping or washing to prevent material or sediment-laden wash water from entering any watercourse;
BR16 clean and remove debris and sediment from the bridge deck and drainage devices and dispose of the material in a way that will prevent it from entering the watercourse;
BR17 sweep decks, including curbs, sidewalks, medians and drainage devices, to remove as much material as practical before washing;
BR18 direct wash-water past the ends of the bridge deck to a vegetated area to remove suspended solids, dissipate velocity and prevent sediment and other deleterious substances from entering the watercourse. If this cannot be achieved, direct it to a sump for disposal and/or use silt fences or other erosion and sediment control measures.

Post Works Mitigation

BR19 maintain effective erosion and sediment control measures until complete re-vegetation of disturbed areas is achieved;

Clear-Span Bridge Removal

Design

BR20 ensure General BMPs and Standard Project Considerations have been consulted and appropriately applied prior to, during and after commencement of work;
BR21 removal activities must adhere to Regional Timing Windows to prevent disruption of fish and wildlife habitat.

Operational

BR22 avoid work during wet and rainy periods;
BR23 stabilize any waste soils or organic matter removed from the work site to prevent them from entering the watercourse. This could include covering stockpiles with biodegradable mats or tarps or planting stockpiles with grass or shrubs;
BR24 clear-span bridge structures, materials and equipment must not be dragged through, or otherwise alter, streambeds during removal procedures;
BR25 surficial water flow at the crossing location must be controlled upon deactivation;
BR26 remove timber bridges in one piece;
BR27 remove all approaches upon deactivation of clear-span bridges;
BR28 leave cribbing of a wooden bridge in place if it is stable and over time has integrated into the stream banks and channel and now contributes to their complexity during deactivation. If the cribbing significantly constricts the channel or the upper portion of the cribbing could decay and fail in time then it should be removed and only the lower portion left in place;

Post Mitigation Works

BR29 maintain effective erosion and sediment control measures until complete re-vegetation of disturbed areas is achieved;
BR30 restored steam substrate, channel, banks and other affected areas to their approximate original configuration and composition during the deactivation/modification of stream crossings. Any fill material that has been added to the watercourse channel and floodplain must be removed and placed in location where it will not re-enter the stream;

Ice Bridge/Winter ford/Snowfill Maintenance

Design

BR31 ensure General BMPs and Standard Project Considerations have been consulted and appropriately applied prior to, during and after commencement of work;
BR32 maintenance activities must adhere to Regional Timing Windows to prevent disruption of fish and wildlife habitat.

Operational

BR33 maintain all snowfill stream crossings in such a manner that sediment and deleterious substances are not integrated into the crossing structure in order to prevent Harmful Alteration, Disruption or Destruction (HADD) of fish habitat;
BR34 ensure structures do not restrict water flow at any time;
BR35 monitor material thickness regularly to ensure appropriate thicknesses are achieved;
BR36 clear excessive snow to prevent ice from weakening;
BR37 infill puddles of water with fresh snow to minimize heat absorption;
BR38 regularly monitor structures for signs of cracking and repair immediately upon discovery.

Post Works Mitigation

BR39 restore banks to original condition where any disturbance has occurred;

B. Bridge Superstructure Maintenance or Repair

Design

BR40 ensure General BMPs and Standard Project Considerations have been consulted and appropriately applied prior to, during and after commencement of work;
BR41 maintenance or repair activities must adhere to Regional Timing Windows to prevent disruption of fish and wildlife habitat.

Operational

BR42 install effective erosion and sediment control measures before starting work to prevent the entry of sediment into the watercourse. Inspect erosion and sediment control measures regularly to ensure they are functioning properly. Make all necessary repairs if any damage occurs and to maintain functionality;
BR43 use hydroblasting or manual techniques, where possible, when removing road dirt, soluble salts and loose paint to minimize impacts to the watercourse;
BR44 use water without cleaning agent additives if grease film removal is necessary;
BR45 avoid use of toxic liquid paints, primers, solvents, degreasers and rust inhibitors;
BR46 ensure paint flakes, abrasive grits and abrasive/paint flake mixtures do not enter the watercourse as they may leach toxic heavy metals into receiving waters and/or be ingested by fish;
BR47 install ground covers and/or vertical drapes such as sheets of plastic or air-permeable cloth (e.g., burlap or canvas) prior to removal activities to capture falling debris. Floating barges may be deployed in watercourses to capture falling debris, such as paint flakes and dust;
BR48 waste materials collected during removal and application of protective coatings operations (e.g., blasting abrasives, paint particles, rust and grease) should be collected and retained for disposal at appropriate locations. Waste materials must not be deposited into watercourses or riparian areas;
BR49 minimize spill potential by storing, mixing and transferring paints and solvents on land;
BR50 equipment must never be cleaned in watercourses and contaminated water flowing from onshore cleaning operations must not enter the watercourse;
BR51 when taking water from a watercourse, ensure pump hoses are equipped with an appropriate device to avoid entraining fish. Guidelines to determine the appropriate mesh size for intake screens may be obtained from DFO (Freshwater Intake End-of-Pipe Fish Screen Guidelines 2.93MB PDF) and Short Term use application may be obtained from MOE (Water Act Section 8, Short Term Use of Water Approval Application). Avoid using small streams and wetlands as a water source;
BR52 adequately seal drains and any open joints on the bridge deck before sweeping or washing to prevent material or sediment-laden wash water from entering any watercourse;
BR53 clean and remove debris and sediment from the bridge deck and drainage devices and dispose of the material in a way that will prevent it from entering the watercourse;
BR54 sweep decks, including curbs, sidewalks, medians and drainage devices, to remove as much material as practical before washing;
BR55 direct wash-water past the ends of the bridge deck to a vegetated area to remove suspended solids, dissipate velocity and prevent sediment and other deleterious substances from entering the watercourse. If this cannot be achieved, direct it to a sump for disposal and/or use silt fences or other erosion and sediment control measures;
BR56 if rip rap reinforcement/armouring is required, limit placement to stabilize eroding areas around the piers and abutments and incorporate the following measures:
  • place large, durable, clean, suitably-graded and sized angular rocks (rip rap) into the eroding area by hand or using machinery operating outside of the water;
  • carefully unload rocks and key into place (if placing rocks along the embankment);
  • implement appropriate erosion and sediment control measures and maintain their functionality;
  • do not obtain rocks from below the high water mark (HWM) of any water body;
  • install rip rap at a similar slope as the stream bank to maintain a uniform stream bank slope and natural stream alignment to a maximum slope of 1V:2H (except in special circumstances);
  • ensure rip rap does not constrict the channel width or flow; and,
  • ensure that the placement of rip rap does not infill instream fish habitat (e.g. outlet pools) and does not create a barrier to fish passage, particularly during low flow periods.
BR57 conduct maintenance work by hand, where possible;
BR58 operate machinery, if required, from the top of bank;

Post Works Mitigation

BR59 restore banks to original condition where any disturbance has occurred;

C. Clear-Span Bridge Construction

Design

BR60 ensure General BMPs and Standard Project Considerations have been consulted and appropriately applied prior to, during and after commencement of work;
BR61 construction activities must adhere to Regional Timing Windows to prevent disruption of fish and wildlife habitat;
BR62 avoid floodplains, meander bends, braided streams, alluvial fans and areas where bank stability may be a concern;
BR63 align stream crossings perpendicular to stream flow;
BR64 prevent unnecessary repair and hazard by designing the bridge to withstand maximum loads;
BR65 design structures to span the full bank width of the watercourse;
BR66 ensure that the bridge is properly designed to address river and channel processes at flows above the high water mark (HWM);
BR67 minimize road material and gravel on a bridge deck from entering the watercourse. Design the bridge to use containment logs or boards between the bridge deck and the guard rails to minimize the potential of road material on the bridge decks from entering the stream;

Operational

BR68 avoid work during wet and rainy periods;
BR69 ensure activities and structures (including excavation, backfilling of footings/abutments and placement of rip rap) do not encroach on the full bank width;
BR70 install effective erosion and sediment control measures before starting work to prevent the entry of sediment into the watercourse. Inspect erosion and sediment control measures regularly to ensure they are functioning properly. Make all necessary repairs if any damage occurs and to maintain functionality;
BR71 if dewatering of the site is required, an Environmental Monitor holding all necessary permits required by fisheries agencies to collect and transport fish, should be on hand to make the final decision regarding the need for a fish salvage program. If a fish salvage is necessary, recovered fish must be relocated to a safe area outside of the influence of the work site and transport containers must not be overloaded with fish (see General BMPs and Standard Project Considerations: Salvage of Fish and/or Wildlife section for further information);
BR72 prevent sediment delivery to a watercourse by elevating the road grade to ensure that the grade falls away from the crossing for a minimum of 10 m on either side of the crossing (if the topography permits);
BR73 ensure appropriate ditching is constructed to direct water to infiltration areas so deposit of sediment to the waterbody is avoided;
BR74 construct turnouts sufficient distances from the bridge to prevent road material from entering the watercourse and to minimize impacts on riparian vegetation.
BR75 ensure adequate cross drainage is in place before the bridge approach, to minimize water volume directed into approach ditches at bridge sites;
BR76 ensure cross-ditches are properly armoured at the outlet and along the base, if required;
BR77 abutments/footings must not be backfilled with vegetation, debris or mud. Only site appropriate, compacted fill material is to be utilized for backfill;
BR78 operate machinery, if required, from the top of bank;
BR79 keep machinery, if required, free of excess oil and grease and ensure equipment contain no hydraulic fluid leaks (see General BMPs and Standard Project Considerations: Deleterious Substance Control/Spill Management section for further information);
BR80 ensure cutting of treated timber takes place away from the bridge and watercourse;

Post Works Mitigation

BR81 restore banks to original condition where any disturbance has occurred;
BR82 maintain effective erosion and sediment control measures until complete re-vegetation of disturbed areas is achieved;

D. Ice Bridge/Winter Ford/Snowfill Construction

Design

BR83 ensure General BMPs and Standard Project Considerations have been consulted and appropriately applied prior to, during and after commencement of work;
BR84 construction activities must adhere to Regional Timing Windows to prevent disruption of fish and wildlife habitat;
BR85 ensure crossings do not impede water flow or fish passage at any time of the year;

Operational

BR86 install effective sediment control measures prior to starting work to prevent the entry or deleterious sediment in the watercourse and Harmful Alteration, Disruption or Destruction (HADD) of fish habitat;
BR87 when taking water from a watercourse, ensure pump hoses are equipped with an appropriate device to avoid entraining fish. Guidelines to determine the appropriate mesh size for intake screens may be obtained from DFO (Freshwater Intake End-of-Pipe Fish Screen Guidelines 2.93MB PDF) and Short Term use application may be obtained from MOE (Water Act Section 8, Short Term Use of Water Approval Application). Avoid using small streams and wetlands as a water source;
BR88 construct/deactivate all ice bridges in such a way that the natural flow of the watercourse being crossed is not affected;
BR89 use clean, compacted snow and/or ice to a sufficient depth to avoid cuts to the banks of the lake, river or stream. Clean logs may be used to stabilize approaches;
BR90 securely cable approach logs together to they can be easily removed and ensure logs or woody debris are not left within the waterbody, banks or shoreline;
BR91 maintain all snowfill stream crossings in such a manner that sediment and deleterious substances are not integrated into the crossing structure in order to prevent Harmful Alteration, Disruption or Destruction (HADD) of fish habitat;
BR92 control surficial water flow at the crossing location during deactivation;

Post Works Mitigation

BR93 remove structures immediately upon completion of the project or prior to spring freshet, whichever comes first;
BR94 remove all approaches during snowfill deactivation to prevent the deterioration of streambanks and sedimentation of watercourses;
BR95 removal of instream snowfill material during deactivation by using an effective removal technique. Partially notching the snowfill is not an approved means of removal;
BR96 keep a record of ice thickness and water depth to verify that that stream flow is maintained and grounding does not occur.
BR97 restore banks to original condition where any disturbance has occurred;

E. Emergency Obstruction Removal

Design

BR98 ensure General BMPs and Standard Project Considerations have been consulted and appropriately applied prior to, during and after commencement of work;
BR99 ensure an appropriately qualified professional confirms all emergency works and properly classifies works as Type 1 or Type 2 emergencies
Type 1: works requiring immediate attention during a flood event or as designated under the Provincial Emergency Program. These situations have caused or present an immediate (within 24 hours) high potential danger to human life, damage property or fish and wildlife populations or habitat; and,
Type 2: works requiring attention prior to the next flood event. These situations present a high potential danger to human life, damage property or fish and wildlife populations if not addressed prior to the next flood event.
BR100 ensure Type 1 emergencies use the following protocols:
  • commence necessary works to alleviate the emergency and immediately advise appropriately qualified professional monitors (at any time of day or day of the week);
  • incorporate the standards and Best Management Practices appropriate to bridge works being competed to ensure the protection of fish and wildlife populations and habitats;
  • ensure monitoring professionals attend the site immediately to conduct salvages and environmental protection measures are designed, constructed or installed and maintained appropriately. The monitor should remain at the site full-time to monitor the works until completion;
  • ensure only works necessary to mitigate the emergency are completed. Any remaining works should be deferred until the next work window or conducted through the regular process; and,
  • ensure monitors notify MOE, DFO and any other appropriate agencies by fax and phone within 72 hours. The monitor should include technical rationale for justification of the proposed emergency works, information associated with the Notification and any special mitigating Best Management Practices used for completing the works outside the work window (agency staff may visit the site after receipt of the Notification).
BR101 ensure Type 2 emergencies use the following protocols:
  • advise appropriately qualified professional monitors during the first available office hours;
  • ensure only works necessary to mitigate the emergency are proposed. Any remaining works should be deferred until the next work window or conducted through regular processes;
  • schedule works to be completed prior to the next flood event and ensure designs incorporate the recommended standards and Best Management Practices appropriate to the type of works proposed. If appropriate, special mitigative measures should be incorporated into the design to reduce the risks of working outside work windows;
  • ensure monitoring professionals notify MOE, DFO and any other appropriate agencies by fax and phone and include all design, plans and mitigation documents. The professional should include in the communication the use of appropriate protocols, technical rationale for justification of the proposed emergency works, information associated with the Notification and any special mitigating best practices used for completing the works outside work windows (agency staff may visit the site after receipt of the Notification);
  • ensure monitoring professionals meet onsite with agency staff, if available, to review designs, associated plans and proposed works. Any additional Best Management Practices should be discussed and agreed to during the site visit. Works should then be completed prior to the next flood event; and,
  • ensure monitoring professionals attend the site prior to conducting any works to complete salvages and to ensure environmental protection measures are constructed, installed and maintained appropriately. Works should be monitored full-time until completion.

Operational

BR102 remove all obstruction debris from the active floodplain to ensure it is not redeposited during the next flood event;
BR103 remove obstructions by hand, where possible;
BR104 remove debris accumulation gradually to prevent downstream erosion, flooding, habitat damage and mobilization of sediment;
BR105 any machinery, if required, must work from the top of the bank and not in the stream channel;
BR106 install effective erosion and sediment control measures before starting work to prevent the entry of sediment into the watercourse. Inspect erosion and sediment control measures regularly to ensure they are functioning properly. Make all necessary repairs if any damage occurs and to maintain functionality;
BR107 limit the removal of debris material to only that which is absolutely necessary to protect piers and abutments; and,
BR108 ensure an appropriately qualified professional monitors all emergency works full time and has extensive knowledge and experience in erosion and sediment control and fish and wildlife salvage.

Post Mitigation Works

BR109 maintain effective erosion and sediment control measures until complete re-vegetation of disturbed areas is achieved;
BR110 ensure monitors provide a report within 10 working days of completion of the majority of works to proponents and a final copy to MOE and any other agency(s) in the jurisdiction;
BR111 ensure monitoring reports contain:
  • detailed accounts of the completion of works including milestone events;
  • confirmation of the use of standards and recommended best practices or supported alternatives through an appropriate professionals' supported signed and sealed technical rationale;
  • confirmation of consistency of completed works with the submitted Notification;
  • fish and wildlife protection mitigation difficulties encountered and how those difficulties were managed; and,
  • outstanding issues with the Notification, and how and when those activities will be completed and confirmed and how and when they will be reported.

Supportive Information

The following sources provide you with additional planning, design, implementation and review advice for a variety of project-specific activities. Please follow the appropriate links to obtain further information on your project specific activity.

General Considerations

Pacific Region Operational Statements Develop with Care: Environmental Guidelines for Urban and Rural Land Development in British Columbia (842KB PDF) Freshwater Intake End-of-Pipe Fish Screen Guideline 2.93MB PDF Guidelines to Protect Fish and Fish Habitat From Treated Wood Used in Aquatic Environments in the Pacific Region (963KB PDF) Land Development Guidelines for the Protection of Aquatic Habitat (Section 5 and 6) (2.79MB PDF) Timing Windows and Measures to Adequately Manage and Conserve Aquatic Resources for the Cariboo Region Forest Districts (152KB PDF) Oil and Gas Commission Stream Crossing Planning Guide (Northeast BC) Fish-Stream Crossing Guidebook, Forest Practices Code (2.34MB PDF) Riparian Areas and Revegetation, Pacific Region Canadian Standards Association

Bridge Maintenance Design & Techniques

Bridge Maintenance Operational Statement, DFO Pacific Region Best Management Practices for Highway Maintenance Activities (Section 6.12 Bridge Structure Management) (1.15MB PDF) Guidelines for the Protection of Fish and Fish Habitat During Bridge Maintenance Operations in British Columbia (6MB PDF) Roadway and Bridge Maintenance, Ministry of Environment, Environmental Protection Division Best Management Practices Guide for Stormwater, BMP OM7: Roadway and Bridge Maintenance, Metro Vancouver (2.66MB PDF)

Bridge Construction Design & Techniques

Small Clear-Span Bridges Operations Statement, DFO Pacific Region Drainage Management Guide-No. 14, Bridge Construction (492.4 PDF)

Ice Bridge Design & Techniques

Ice and Snow Fill Bridges Operational Statement, DFO Pacific Region Safety Guide for Operations Over Ice

Rip Rap Design & Techniques

Rip Rap as Bank Stabilization Above High Water Level (399KB PDF) Rip Rap Design and Construction Guide (10MB PDF) Best Management Practices Guide for Stormwater, Appendix H: BMPEC13 Rip Rap, Metro Vancouver (2.69MB PDF)
Where to start?

If you are unfamiliar with Instream Works, please use the interactive Introductory flowchart to help guide you through the process.

Glossary

Important words, denoted by blue underlined text are defined in the glossary.

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More information...

See the Supportive Information section at the end of this document for links to other websites and documents.