This called for a bridge with higher traffic capacity, so a replacement Bolshoy Ustinsky bridge was built. Maly Ustinsky and Yauzsky (Astakhovsky) Bridge were also torn down and rebuilt to the same high capacity standard. Ring link was never completed; its planned outline can be vaguely traced by a chain of grand stalinist buildings near Tretyakovskaya metro station. Traffic through Bolshoy Ustinsky Bridge remains relatively low (unlike the busy Yauza bridges). The bridge is 40 meters wide and 478 meters long; main span is 134 meters long, having six parallel steel arches (span formula 50.5+134.0+50.5 meters). Orthotropic deck is supported by I-beams; there are six road lanes and two tram tracks on a raised divider. Two features make this bridge unique:  Bolshoy Ustinsky bridge was reconstructed in 1999-2000, replacing the roadway deck with an improved, lighter orthotropic type. It retained all original structural details. The first, wooden Komissariatsky Bridge (Комиссариатский мост) across Vodootvodny Canal existed since the 1850s, in line with Komissariatsky Lane. It was named after the nearby New Kriegskomissariat, a castle-like military depot (built 1778-1781); there is no relation to Red Commissars of 20th century. Existing Komissariatsky Bridge continues the Bolshoy Ustinsky Bridge path across Vodootvodny Canal into Zamoskvorechye, 300 meters north-west from the old site. It was built in 1927 by Boris Tyazhelov (span 46 meters, width 19.4 meters, shallow concrete arch type). However, it was put to regular use (including trams) only in 1960. Spans right over the mouth of Yauza, continuing Moskvoretskaya Embankment into westward Kotelnicheskaya Embankment. Replaced the old steel bridge (1883). Built in 1938 by M.D.Gayvoronsky (structural engineering) and I.V.Tkachenko (architectural design). Total length 64.4 meters, width 40 meters (8 lanes), steel lattice type. Astakhovsky (Acтаховский) Bridge across Yauza was built in 1940 by I.N.Golbrodsky (structural engineering) and I.V.Tkachenko (architectural design) on the site of old Yauzsky Bridge (1804), 250 meters upstream from Yauza mouth.