At 22:00 on February 12, the Linyuan Road underpass tunnel—the key component of the comprehensive development project for the square in front of Mianyang Railway Station and its surrounding supporting facilities—officially opened to traffic. During the Spring Festival travel rush, Mianyang Railway Station is expected to handle over one million passenger trips. With the tunnel now in operation, through-traffic vehicles can travel directly from Hehua West Street to Wenzhu Street in approximately two minutes, achieving physical separation from station access and egress traffic flows and diverting an estimated 40% of vehicles, significantly alleviating congestion on the 'last kilometer' of the journey home.

Underpass tunnel

The project is located along a major arterial road in Fucheng District, Mianyang, and comprises two main components: the Linyuan Road underpass tunnel and the station forecourt plaza. The newly opened tunnel spans 1,419 meters in length and 50 meters in width, featuring a four-lane dual-carriageway design that runs east-west through the core area of the railway station. Its primary function is traffic diversion. In recent years, peak-hour vehicle volume on the Linyuan Road section near the railway station has exceeded 5,300 vehicles, with daily average passenger flow reaching 30,000 and holiday peaks surpassing 100,000. The intense intermingling of pedestrians and vehicles has made 'slow-moving queues and persistent congestion' a common challenge for both residents and travelers.

Project rendering

The construction environment was highly complex, subject to three rigid constraints: active railway lines directly overhead, busy urban arterial roads on both sides, and a dense network of underground utilities. Work had to proceed under the strict conditions of 'zero interference, zero disruption, and zero accidents'. To address the challenge of concurrent operations and construction, the project team implemented precise traffic control at all intersections and simultaneously erected modular prefabricated pedestrian bridges. Within just seven days, they achieved complete separation of pedestrian and vehicular flows, fully eliminating intersecting movement paths between exiting passengers and the construction zone, thereby ensuring safe passage for over 30,000 people daily.

As a demonstration project for integrated station-city development in Mianyang, the completed facility will promote the integrated and coordinated development of urban rail transit.

【本文部分内容由AI辅助生成，特此声明。The author(s) generated part of the content in this work with the assistance of artificial intelligence (AI), which is hereby declared.】