You may not have full cracks, but that doesn’t mean you’ve avoided small chips and impurities in your windshield. If you drive the I-15 every day, your chances of getting hit by debris and rocks is great, and a close examination of your windshield is in order. Small cracks can generally be filled with adhesive resin at your local automotive repair shop. Doing this will prevent the crack spreading and deepening. Larger, more obvious cracks may require more work or full windshield replacement.
Don’t ignore a windshield crack or chip. Leaving it can decrease the the effectiveness of airbags, seat belts, roof stability, and threaten your overall safety.