[5]. The sculpture was supposed to be minted from copper sheets, but then the figures were cast from cast iron at the Alexandrovsky iron foundry [5] [11]. The sculptures of lions were painted in matt white marbled paint. In 1882, all the wooden parts of the bridge were replaced, the cast iron railings were replaced with iron forged ones of a very primitive design, the lanterns located in the middle of the bridge were dismantled [12] [2]. The right-bank embankment of the canal was raised by one row of granite stones, while the figures of lions with pedestals and chains were raised [13]. In 1948, by engineer A. M. Yanovskiy, a major reconstruction of the bridge was carried out including the replacement of wooden longitudinal beams with metal I-beams [11]. In 1954, a new handrail and lanterns were installed on the bridge, made according to the original project, the white color of the lion sculptures was restored (after a series of unsuccessful dark paints) [5]. Restoration work on the reconstruction of the bridge rails, floor lamps with lanterns and the restoration of the original painting were carried out by the Special Scientific Restoration Production Workshops of the Office of Architecture, designed by the architect A. L. Rotach and the technician G. F. Perlina [14] [15]. In 1999-2000, according to the project of JSC Institute "Stroyproekt," the bridge was overhauled: the beams of the superstructure were replaced, the sculptures of lions were restored [16]. In 2018, work was carried out for the restoration of the lion sculptures[17] [18]. Copy of the bridge In 1838, a reduced copy of the bridge (length 17.3 m, width 2 m) was erected by the firm Borsig for the project of the German architect LF Hesse on territory of Berlin's Great Tiergarten park. The Lion Bridge was the first Berlin suspension bridge. Unlike the original in St. Petersburg, the superstructure and railings of the Berlin Lion Bridge are still wooden. Design The bridge is a single-span beam, the chains play a decorative role [1]. The superstructure consists of two welded double-tee beams made of low-alloy steel, combined with a chain hanging system with a distribution strip [16]. The function of the pylons is performed by the sculptured cast iron frames (frames), attached with anchor bolts through the masonry to a wooden grille, compressed from above and below by massive cast iron slabs, to which supporting chains