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Design Exceptions

Design Exceptions
A design exception is the formal documentation of the justification to deviate from the established design criteria. The controlling criteria which requires a design exception are lane width, shoulder width, bridge width, structural capacity, horizontal alignment, vertical alignment, grade, stopping sight distance, cross slope, superelevation, vertical clearance and horizontal clearance. Design exceptions should be submitted prior to the Stage 1 submission. The format for the design exception can be found in the L&D manual Volume 1 section 105.5.1. 


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