Narrow widening strips are defined as how many feet?

• A. 4 ft or less
• B. 5 ft or less
• C. 6 ft or less
• D. 3 ft or less

Answer: (B)

Five feet or less is the standard cutoff for a narrow widening strip. This small increase in width is treated as a minor adjustment to the existing cross-section and can usually be handled with standard construction methods without redesigning drainage, slopes, or the overall alignment. The idea is that once the widening reaches five feet, it starts to cross into a broader change that may require more extensive planning and design considerations. So, the definition that fits the common practice is five feet or less.