As a major transportation project in Dalian City, Liaoning Province, China, the Xinghai Bay Cross-sea Bridge has many significant highlights. The following is a summary of its highlights:
### 1. Engineering design and construction
1. **Main Bridge Structure**: The main bridge of Xinghai Bay Bridge is a twin-tower three-span ground-anchored suspension bridge. The main beam adopts a steel truss structure. This design makes the bridge both strong and beautiful.
2. **Double-deck opening to traffic**: The bridge is designed to be double-deck opening to traffic. Both decks are two-way four-lane urban expressways. The design speed reaches 80 kilometers/hour, which greatly improves traffic efficiency.
3. **Grand scale**: The total length of the bridge is 6 kilometers, the main bridge is 820 meters long, the main span is 460 meters, the side spans are 180 meters, and the main tower is 114.3 meters high. These figures all highlight the majesty of the bridge. .
### 2. Technological Innovation and Records
1. **Multiple firsts in the country**: Xinghai Bay Bridge is the first offshore gravity-anchored suspension bridge in China, the first double-decker steel truss suspension bridge open to traffic in China, and the longest offshore double-decker bridge in China. These innovations make the bridge famous in the world. It is unique among similar bridges.
2. **World's first**: The bridge is also the first bridge in the world to use riprap caisson foundation construction, and the first bridge in the world to use prefabricated erection construction. The upper bridge uses main beams and cross beams to be consolidated, and the cross beams and piers are set between These technological innovations provide a strong guarantee for the construction of the bridge.
### 3. Landscape and night view
1. **Beautiful Landscape**: The bridge spans the Yellow Sea and connects Ganjingzi District and Xigang District. On the bridge, tourists and citizens can enjoy the boundless sea and the brilliant lights of the city, and feel the gentleness of the sea and the prosperity of the city.
2. **Charming night view**: The bridge is particularly beautifully decorated at night with more than 30,000 small lights and light strips on both sides of the approach bridge, becoming a beautiful scenery in Dalian's night view. During the festival, the bridge will also put on various light shows, which is a spectacular scene.
### 4. Tourism and Leisure
1. **Hiking**: There are sidewalks on the north and south sides of the bridge, which are separated from the roadways, making it convenient for tourists and citizens to visit on foot. Visitors can go directly to the bridge from the high-tech park, the south gate of the forest zoo and other places. The whole walking process takes about 1 and a half to 2 hours.
2. **Observation and Photography**: Xijianshan Park and the south gate of Dalian Forest Zoo are the best observation and photographing points of the cross-sea bridge. Visitors can enjoy the beautiful scenery of the bridge here.
To sum up, the Xinghai Bay Cross-sea Bridge has become a bright business card of Dalian City and even the whole country with its unique engineering design and structure, technological innovation and records, beautiful landscape and charming night view, as well as tourism and leisure value. .