The DOT 529 Opening or Swing Bridge Ahead sign is an official traffic warning sign used to notify drivers of an upcoming movable bridge that may open to allow waterway traffic to pass. This includes swing bridges and other types of opening bridges. 1,485 opening bridge sign illustrations, drawings, stickers and clip-art are available royalty-free for download. This design elegantly symbolizes how knowledge leads to progress, culture, and community organizations. The following 86 files are in this category, out of 86 total. Augustine, Florida from Anastasia island isolated against blue sky i RF GK634J – Stop light on barrier RF EYRJ6R – Opened bascule. OpenBridge is an open-source design system and guideline for building safe, efficient, and scalable interfaces in maritime and industrial workplaces.