Karpen Bridge

Karpin Bridge is a pedestrian arched bridge over an artificial cascade between Karpin Pond and White Lake, connecting two parts of the Long Island in the Palace Park of the Gatchina Museum-Reserve. The stone arched bridge over the artificial cascade on Karpin Pond at its confluence with White Lake was built in 1792 based on a design by architect Brenna. It got its name from Karpin Pond, where silver carp were bred for the table of Paul I, and later for other royal persons living in the Gatchina Palace and their guests. Previously, a cascade of Karpin Pond was located under the bridge at its confluence with White Lake.

In 1944, the bridge was completely destroyed during the Nazi occupation. In 1955, based on images from the "Kushelevsky Album" and architectural surveys made in 1935 by architect Krasovsky, materials for the restoration of Karpin Bridge appeared. The bridge was restored in 1984.

The bridge is a single-span arch. The span structure is made in the form of a solid reinforced concrete continuous arch. The abutments are reinforced concrete on a natural foundation. The foundation slab simultaneously serves as a tie for the arched span structure and as the foundation for the dam. The facades are clad with limestone; the bridge supports are granite (in the underwater part) and limestone (in the above-water part). The bridge railings are solid parapets. The bridge has the shape of a fortress bastion. Its architecture, with vertical abutments, a solid parapet, and brackets, reflects a plastic affinity with the palace.

Sources:

https://ru.wikipedia.org/wiki/Карпин_мост_(Гатчина)

https://gatchinapalace.ru/park/attractions/karpin_bridge.php