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The Ministry of Forests, Lands, Natural Resource Operations and Rural Development (FLNRORD) generally follows guidance provided for in the CSA S6:19, Canadian Highway Bridge Design Code for bridge and bridge component design. However, there are variations from CSA S6 to address that FSR structures are on industrial resource roads.
Variations are captured in Ministry standards and specifications, including standard drawings. Additionally, variations are captured in the Ministry's Supplement to CHBDC (CSA S6). The supplement is to be used in conjunction with the CHBDC.
Unless approved otherwise, the design life of new structures shall be a minimum of 45 years, except for components that are specifically stated by the Ministry to be composed of untreated timber. Material selection and specified quality control shall ensure that the design life of all major structural components is achieved.
Provided that all safety and durability provisions are met, cost effectiveness of the structure shall be considered in selecting the structure type and materials.
The previous standard design vehicle drawings have been deleted and information for B.C. Forest Service design vehicle configurations and traffic loads can now be found in the Supplement to CHBDC (CSA S6), Section 3.0 Loads.
When designing and constructing bridges for forest service roads, standards for general arrangement design, structural design and temporary bridges need to be followed. These standards govern over requirements specified in CSA S6:19, Canadian Highway Bridge Design Code.