Bridge design and construction for resource roads

Last updated: June 14, 2021

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The B.C. government is responsible for determining appropriate design and construction specifications for Forest Service road bridges. Relevant documents for the design, construction and inspection of provincial bridges and major culverts on resource roads are provided.

Bridge Design and Construction Manual and standard drawings

The Bridge Design and Construction Manual (BDCM) & Standard Drawings cover practices and procedures and standards for permanent and temporary structures on Forest Service Roads, and is accompanied by standard bridge design drawings.

Interim bridge design guidelines provided for direction and guidance:

NEW: June 2021 - A new ministry supplement to CSA S6, Canadian Highway Bridge Design Code (CHBDC) is being introduced.  The content of the supplement shall take precedence over any other conflicting previous guidance.  Further information on the ministry supplement can be found through this link:

Also, please note that the ministry BDCM will be replaced in the next few weeks with the Bridges Design and Construction Standards and Specifications (BDCSS) website.  You will note references to the BDCSS appearing in ministry guidance and documentation.  The new website will replace and capture ministry resource road bridge design standards and specifications and will be the new primary reference.

Bridge material standards

The provincial government has developed standard templates and other documents, to capture ministry bridge component material requirements, for use by those acquiring bridge materials for installation on Forest Service Roads or for other ministry projects.

Resource road bridge related projects and studies

 Mar. 2010 to Mar. 2011: Evaluation of Timber Deck Systems to Develop Rational Engineering Design and Analysis of Existing Systems:

Nov. 19, 2008: Design Checks for Timber Decks on Steel Girders (PDF, 3.7MB)


FSR bridge guidance documents


Guidelines and reports

April 12, 2018: Sample Standard Bridge General Arrangement DrawingsComplex (PDF, 2.2MB)

April 12, 2018: FLNRORD Post-fire Bridge Assessment Procedures - Working Draft (PDF, 3.7MB)

Note: This is a working draft document for use. Feedback on this document can be submitted to:     

July 1, 2017: Concrete Repair Guide for Concrete Bridge Components (PDF, 825KB)

Jun. 4, 2015: Sample Standard Bridge General Arrangement Drawings – Simple (PDF, 6.1MB)

March 10, 2021: Canadian Precast Concrete  Quality Assurance (CPCQA) Certification Program (PDF, 2.7MB)

Feb. 2014: Overview of Canadian Welding Bureau and CSA Welding Standards (PDF, 4.8MB)

Mar. 6, 2012: In-Plant Bridge and Cattleguard Inspection Services (PDF, 4.8MB)

Bridge timber preservative treatment

Jan 8, 2020: FLNRO Standards for Bridge Timbers and Wood Treatment - Webinar (PDF, 4MB) 

Jun. 28 2017: Guidelines for Use of Treated Wood In and Around Aquatic Environments and Disposal of Treated Wood (PDF, 2MB) 

Oct 18, 2018: FLNRO Process Based Specification for CCA Treatment of Coastal Douglas-fir Wood, presentation to CWPA (PDF, 2.3MB) 

Aug 13, 2012: Evaluation of results - FLNRO Process Specification for CCA Treatment of Coastal Douglas-fir Wood (PDF, 282KB) 


December 2016: Determination of rebar in reinforced precast concrete slab bridges – pilot project K1629

March 2016: Riprap Alternatives: Application and Opportunities (PDF, 3.21MB)

Jun. 2004: Analysis of Skew: Single-Lane Shear-Connected Concrete Plank Bridges (PDF, 786KB)

Oct. 1981: Log Bridge Stringers and Needle Beam Sizing (PDF, 4MB)

Bridge and road load limits reports and presentations

Bridge design vehicle analysis