A little north of downtown Fresno, workers are nearing completion of the excavation for the high-speed rail crossing under State Route 180. As crews put the finishing touches on the walls inside the undercrossing, others excavate the area outside where the trains will come back to grade. The next step will be to construct a concrete box that will carry trains under the highway, a rail spur and the Dry Creek Canal. Crews have reached the bottom of the trench and are fine grading the area in order to start the box construction. Ultimately, the trench will extend approximately 1 mile in length.