I think you are looking at the gauge below Gypsum if you are seeing 3k flows. The most relevant one to that section is in Wolcott and is reading 2500 now. I just drove down the hwy along the river and looked at the trestle and the arched bridge you spoke about, and both are passable now. There are also a couple suspended bridges, but it you can pass under the arches you can make the others. If you have a fishing frame, it might get tight with a bit more flow, but I ran wolcott to Gypsum in a 16' with oars last year with a good bit more flow (dont remember exact numbers) and we had to duck under the arched bridge but the oar towers still made it.
I stopped along the river at dead cow rapid and it looked fun. The whole section is visible from Hwy 6 if you run your own shuttle so you can look at anything that might be a concern.