Like the new curved* bridges at M6 J10.Bryn666 wrote: ↑Thu May 25, 2023 12:31The use of straight alignments on two bridge roundabouts is why most of them have high speed problems and end up signalised. The curved bridges you lament would actually be safer.Peter Freeman wrote: ↑Tue May 23, 2023 10:41You are right, and I stand corrected: UK curved GSR bridges are rare indeed. I just scanned right along M1 and M4, and the only ones I found are at M1 Lofthouse, where there are four of course (and their curvature is so slight that they may as well have been straight). As you point out, I've harboured this false assumption for a long time. I suppose I should edit my praise of dumbbells!Chris5156 wrote: ↑Mon May 15, 2023 08:58
I broadly agree with your post, but I wanted to reply to this bit because your item 2 has come up a few times in other posts you've made too. In the UK, it is decidedly rare for a two-bridge roundabout interchange to have curved bridges. The roundabout is almost always oval shaped so that the bridges are straight. IME curved bridges on junctions of this type are more common in European versions of the junction.
*Bridges are, I suspect, straight; the road is curved.