Lock 41

Esclusa

Lock 41

Valladolid
Province

Valladolid

Branch

South

Visit duration

30-60 minutes

Services available
Provincia

Valladolid

Ramal

South

Duración visita

30-60 minutes

Servicios disponibles
Página web

The heritage complex of Lock 41, built between 1831 and 1836, is located within the municipality of Valladolid, at kilometer 136.880 of the Southern Branch of the Castile Canal, very close to the N-620 highway and now integrated into the urban environment of the city. This site encapsulates the functional complexity of the canal in its final stretch, where navigation, hydraulic regulation, roads, and productive activities converge at a single strategic point.

The main feature is Lock 41, a simple, rectangular lock measuring approximately 32.50 meters long, 5 meters wide, and 3.60 meters high. Constructed of limestone masonry, it retains its original hydraulic structure. On the right bank, before the entrance, a buried diversion feeds the channel that carries water to the adjacent building, while another intake on the wing allows for the diversion of water without passing through the channel. On the left bank, a fixed-crest spillway extends into the open air, parallel to the canal, and discharges water downstream of the bridge, reinforcing water level control.

Several complementary elements associated with the lock complete its functional understanding. The main bridge over the lock stands out, with its segmental arch, voussoirs, and prominent impost, constructed of limestone ashlar and featuring wing walls that form the outlet spur. It is in good condition and still in use. Two bridges at the diversion point, with semicircular arches, brick vaults, and stone masonry, are aligned with the main bridge to provide continuity to the road towards La Overuela. The lock keeper’s house, a single-story structure built of pressed brick with a gabled roof, is well-preserved and remains in residential use. A historic mill, later restored, completes the complex. Constructed of stone, brick, and a wooden frame, it bears witness to the energy harnessed by the waterfall. Also present are the remains of old houses, now in ruins, that retain their original layout.

A visit to Lock 41 offers a comprehensive experience for understanding the Canal de Castilla as a living infrastructure. Its proximity to the city, the flow of water, and the overlapping of historical and current uses allow visitors to explore a place where engineering, landscape, and daily life merge into a heritage site of great interest.
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How to get there:

The complex is located 25 meters from the N-620, which runs parallel to it on the right bank, and from which, at point 116,900, a path starts that passes over the lock bridge towards La Overuela (a place near Valladolid, considered a neighborhood of the capital).