On January 2, after 783 days of construction, the Pingqiao Tunnel on the Chongqing Wulong–Liangjiang New Area Expressway (hereinafter referred to as the Wuliang Expressway), built by China Railway Eighth Bureau and designed by China Railway Eryuan Engineering Group, was successfully holed through along its entire length, becoming the **tunnel among the Wuliang Expressway's major and difficult control works to achieve breakthrough of both tubes.

The Pingqiao Tunnel of the Wuliang Expressway is located in Pingqiao Town, Wulong District, Chongqing. It is a separated tunnel excavated from both ends, with a right tube 3,832 meters long, a left tube 3,826 meters long, and a maximum depth of cover of 462 meters.

It is reported that the Wuliang Expresswayhas a total route length of about 37.18 kilometers, with a design speed of 100 kilometers per hour and construction to a two-way, four-lane expressway standard. It is the 16th connecting line in the "three ring roads, eighteen radials, and multiple connecting lines" layout of the Chongqing Expressway Network Plan (2019–2035), linking the Ring Expressway, the Nanchuan–Liangjiang New Area Expressway, and the Third Ring Expressway, and is also a lateral densification line between the Yangtze River corridor and the Chongqing–Hunan corridor.