Urban overpass is a traffic facility built to solve the traffic tension at the intersection of urban roads. Its construction not only solves the traffic problem, but also adds to the urban landscape. Overpasses are often on the main traffic arteries of cities and are an important part of the overall effect of urban landscape lighting. Looking at the overpass from a high point of view in the distance, there are lanes that go up and down and then spread out. There are not only the outline of the lanes, but also the light composition and light sculptures in the green space, and the bright lines formed by the street lights and high pole lights in the bridge area. These light elements are integrated to form an organic overall picture. Overpasses are mostly multi-level and multi-lane vertical overlapping. Therefore, in the design of overpass landscape lighting, hierarchical and in-depth lighting expression methods should be used in conjunction with the main structure of the overpass to reflect the landscape charm of the overpass and reflect the entire city to a certain extent. Style. The main purpose of the overpass is to meet the requirements of the traffic function. Due to the characteristics of the overpass function, the space constraints and the influence of the design concept, the shape and the main structure of most overpasses are roughly the same, and it is impossible to leave too much room for aesthetic design. Most of the modern urban overpasses in my country are mainly reinforced concrete structures. The form of the bridge is composed of basic elements such as columns, bridge decks, and guardrails. Depending on the span and cross form, the structural form sometimes changes accordingly. Of course, there are also overpasses that have special treatments to highlight the characteristics of the landscape. Overpass landscape lighting must use the unique rendering function of the light, and use methods such as color and brightness contrast to brighten and beautify it as much as possible. Overpasses come in various forms, some are simple and lively, with smooth lines, full of contemporary flavor, and a strong sense of modernity. Some have complex structures, with up and down lanes, winding twists and turns, passing through each other, giving people a dignified and thick feeling. Each overpass has its own characteristics. Therefore, when designing overpass landscape lighting, it is necessary to understand the cultural background, main characteristics and unique personality of the overpass, establish the leading idea of u200bu200blighting design and the theme to be expressed, and select the needs Focus on rendering parts. Use lights to express the different personalities of the overpass. The landscape lighting design of the overpass should be based on the characteristics of the bridge, and the lighting of different parts of the bridge should be rendered. Overpass green space plays an important role in adjusting the landscape of the bridge area and should be fully utilized. The landscape lighting design of the overpass should focus on the possibility of function and structure to create the landscape, and at the same time the bridge and the road as a unified whole, forming a higher level of visualization. The main idea of u200bu200bthe design is to integrate the overpass into the traffic circle to form an overall continuous urban traffic function, realize the landscaping of the traffic system on a large scale, enhance the recognizability, and form the city in the halo of the road, while the overpass is a circle. Middle node. In the overpass landscape lighting design work, finding the characteristics of structural elements is the main work content. For example, design linear floodlights on guardrails to meet traffic requirements, cancel the impact of light poles on the landscape, and use linear lamps to illuminate the structural side panels to make the overpass structure continuous and three-dimensional. The curve curve of the overpass is a manifestation of the requirements of the vehicle running curve. It is natural. The use of landscape lighting to express such a curvaceous beauty strengthens this sense of smoothness, which is better than the effect of any lighting line on the overpass. The landscape lighting design of the overpass itself includes two contents: functional landscape lighting and landscape lighting. Functional landscape lighting is mainly to solve the lighting of landscape lighting on roads and bridges at night, broaden the field of vision, guide the direction of traffic, ensure traffic safety and smooth flow, and improve transportation efficiency. The purpose of landscape lighting is to reflect the three-dimensional effect of the overpass according to the characteristics of the overpass and to reflect the three-dimensional feeling of the overpass through the appropriate lighting method of the landscape, and to express the beautiful look of the overpass from the aesthetic point of view. The winding and spreading overpasses and the endless traffic lights form an organic whole that combines dynamics and statics, dilutes the less beautiful places and makes the beautiful places more beautiful. Use the lighting art effect to create a comfortable, cozy and beautiful environment culture, improve the artistic atmosphere of the area, and form a lighting landscape node with an overpass as the core.