The entire section runs through the municipality of Laza, Ourense and was designed as a single-track deck with a maximum speed of 350 km/h. The main structure was the two-tube tunnel of El Corno with a length of 8,570 m. With a free section of 52 m2 and an internal diameter of 8.75 m, it allows for 300 km/h traffic, while respecting established health and comfort criteria. Other key structures include the bridges of Felgueira I (22 m and 50 m), the viaducts of Felgueira II (both 80 m) and the viaducts of Portos (both 246 m and 39 m maximum pile height).
