So basically I-11 is semi-constructed through Railroad Pass. The southbound lanes are finished but you are forced on what will be the US 93 Business Route. The new I-11 construction can be seen to the south from US 93 BR up to the junction with US 95. The northbound lanes still start after the Railroad Pass Casino, I think that I managed to capture all the current I-11 shields.
The last time I went through there (September or October 2017), the southbound lanes were complete and they were working on the new northbound lanes. According to an article posted in the Boulder City Bypass thread, northbound lanes will open "between Silverline Road and Foothill Dr" on Feb 1. With that description, it means drivers heading north on US 95 should be able to get on I-11 northbound at the new interchange.
That same article notes the following: (1) the I-11 Railroad Pass Casino Road interchange should open March 1st, and (2) Southbound traffic headed for US 95 should be able to use the new southbound lanes by March 13th. It leaves me wondering if Northbound US 93 traffic might be shifted from the old alignment to the new business route alignment now, or if that's coming later (now would make more sense, as it would allow crews to finish rebuilding the road in front of Railroad Pass Casino.)
Well, I was misled by the article. What was actually scheduled to open Feb 1st (and actually opened a few days early) was the new northbound lanes from what will be US 93 Bus. It also appears the I-11 Railroad Pass Casino Road interchange has been at least partly opened (for exiting southbound), according to a video in the other thread.