I found this map of the proposed Bristol Outer Circuit Road, on the very wonderful
SABRE website:
Takes a moment to get your bearings, even if you know Bristol well!
Starting at 1 o'clock, the M32 junction looks familiar - but hang on, there's a flyover! The section of the Outer Circuit Road from Lawrence Hill to St Paul's was all going to be elevated. This explains why Lawrence Hill and St Paul's junctions are so massive.
At 4 o'clock, there's a junction for Feeder Road - when the Spine Road was built, following more or less the same alignment, this was omitted.
Next, at 5 o'clock is the vast sprawl of the Three Lamps interchange. I watched from the No.3 bus as day by day they ripped apart and burnt the quirky maze of hills and backstreets that was Totterdown for this junction. It was over 40 years ago, and it still makes me weep to think of it.
The odd twiddly bit at 7 o'clock is where the current St John's Lane, having been extended across Victoria Park, hits Bedminster Parade (quite close to Asda).
And then (get to the point, I hear a strangled cry!) we get to Spike Island. At its core, there's an elevated road heading west which hits a large multilevel interchange right where the SS Great Britain is now. Heading north from this is a link to Jacob's Wells Rd, but continuing west is a major road that connects to Cumberland Basin at Brunel Way. This explains the odd knot of link roads by Brunel Lock Road; somewhat oversized given that they only really access a few dozen houses and a pub.
Oh, and note the grey bits - Jacob's Wells Rd, Tyndall's Park Road, Cotham Brow, Montpelier... I've seen plans of the multilevel interchange at Queens Rd, but I've never quite understood how the road was going to cross Cheltenham Rd.
It was this scheme that formed my view that the private motor car is inappropriate as a means of transport in cities, ladies and gentlemen. Compared to this, MetroBus is a thing of beauty.