We see this video of Bristol on a weekday last week.
It looks to us like old market to counterslip lane then down to the St Mary Redcliff roundabout, a loop back towards queen's square, along the harbour front then up Prince Street towards Baldwin Street.
Some people say this is an anti-cycling road design, but the reality is this congestion is a result of the war on motoring. Prince Street bridge was made alternating to cars, hence the congestion on Prince Street and nearby. Queen's square was converted from a dual-carriageway to a so-called-public-square a decade ago, and all those people stuck in the Redcliffe roundabout will be reminiscing about the temporary flyover they took down late last century.