Can an insignificant sidewalk crack evolve into major damage? 

Certainly. Even minor cracks can escalate if overlooked, possibly indicating profound structural challenges. These cracks can widen, spread, destabilize the slab, and cause irregularities. Properly discerning the origin and implementing the most effective remedy is crucial. Bypass DIY fixes and reach out to Dry Pro Foundation & Crawlspace Specialists for a free assessment and guidance on enduring solutions.