Lower Matecumbe Key is traversed by the famous Overseas Highway (U.S. Route 1), which includes the iconic Seven Mile Bridge. If you are referring to a specific bridge along Lower Matecumbe Key, it's likely part of this highway. Here's a description:

**Seven Mile Bridge:**
- The Seven Mile Bridge is a major landmark connecting Knight's Key (near Marathon) to Little Duck Key. The bridge is renowned for its length, spanning approximately seven miles over the turquoise waters of the Atlantic Ocean. 
- From the air, the Seven Mile Bridge appears as a straight line cutting across the sea, offering stunning panoramic views of the surrounding waters and neighboring keys.
- The bridge is divided into two sections: the older historic bridge, which is now reserved for pedestrians and fishing, and the newer bridge for vehicular traffic. Both sections stand as engineering marvels, providing a seamless connection between the keys.

**Aerial Perspective:**
- As you fly over Lower Matecumbe Key, you'd witness the bridge extending into the distance, seeming to float above the shallow coastal waters.
- The clear blue waters underneath the bridge reveal the sandy bottom, coral formations, and seagrass beds, showcasing the unique marine environment of the Florida Keys.
- The surrounding keys, with their tropical vegetation and diverse shades of green, create a picturesque contrast to the vibrant blue of the ocean.

**Island Hopping:**
- The aerial view offers a glimpse of the series of keys that make up the Florida Keys, each with its own character and charm. The smaller bridges connecting these keys contribute to the intricate network of roadways.

**Maritime Activity:**
- Boats and vessels may be seen navigating the waters beneath the bridge, and the open expanses invite thoughts of exploration and maritime adventure.

**Sunset Splendor:**
- If observed during sunset, the bridge transforms into a silhouette against the warm hues of the evening sky, casting long shadows over the water. The colors reflecting off the sea create a mesmerizing and serene atmosphere.

Whether you're driving across it or viewing it from the air, the Seven Mile Bridge is not just a practical route but also a scenic attraction, offering a unique perspective of the beauty that defines the Florida Keys.