The bridge's length increased by one meter during the 1995 Great Hanshin earthquake while it was still under construction.
The central span was originally designed to be 1,990 meters long, but the 1995 earthquake shifted the foundations, forcing an expansion of the span by one meter.
The bridge is designed with a pendulum-based dampening system to counteract wind and seismic forces.
The lighting system uses a variety of seasonal patterns: green for spring, blue for summer, red for autumn, and gold for winter.
The towers are painted in a light pearl gray, selected to blend with the natural colors of the strait and sky.
The main cables are composed of 36,830 individual high-tensile steel wires.
The bridge deck is structured as a stiffening truss to allow winds to pass through, reducing pressure on the road surface.
The Akashi-Kaikyo Bridge, known as the Pearl Bridge, is the world's longest suspension bridge, spanning 3,911 meters across the Akashi Strait. It connects Kobe on Honshu to Awaji Island, serving as a critical link in the Honshu-Shikoku Bridge Project. The structure features two main towers rising 298 meters above sea level, reaching heights comparable to skyscrapers. A signature feature is the Bridge World tour, which allows visitors to climb to the top of a main tower for panoramic views. The bridge was engineered to withstand seismic activity up to 8.5 on the Richter scale and wind speeds of 286 kilometers per hour. Its suspension cables contain enough wire to circle the Earth seven times. The bridge's lighting system utilizes thousands of LEDs that change color schemes based on the season and time of day. Maiko Marine Promenade, an observatory located beneath the bridge deck, provides a unique perspective of the internal steel support structures.
From the beach at Maiko Park looking up at the bridge's main tower base.
Book Bridge World tour spots months in advance, as they have limited capacity and sell out quickly.
Bring wind-resistant clothing, as the wind speed at the top of the tower is significantly higher than at sea level.
Wear comfortable, flat walking shoes for the tour, as you will navigate metal grates and maintenance catwalks.
Do not attempt to walk across the main bridge deck; it is a restricted motorway only.
Bridge World tower tours typically operate from spring through autumn, generally excluding certain weekdays and winter months.
Strict safety gear (helmets and harnesses) must be worn during tower tours; strictly no loose items allowed on the main tower.
