The Fresno Trench is an approximately one mile long trench north of downtown Fresno that will carry high-speed trains under State Route 180, a rail spur, and an irrigation canal. The trench parallels Union Pacific freight tracks and includes an intrusion barrier wall to keep high-speed and Union Pacific trains separate. At its deepest point the trench will be about 40 feet below grade.
From approximately Olive Avenue to Stanislaus Street. Work on the trench has begun south of Belmont Avenue along with excavation beneath SR 180.
A little north of downtown Fresno, workers on the State Route 180 trench are putting the finishing touches on the walls inside the undercrossing, while others excavate the area outside where the trains will start to come back to grade. Work has slowed due to the wet winter weather, but is about to begin on construction of the “floor” of the concrete box that will carry trains under the highway, a rail spur and the Dry Creek Canal. Ultimately, the trench will extend approximately 1 mile in length.