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.)
Despite the Federal shutdown Hoover Dam was still open. I-11 can be seen being built over the mountains to a new junction with NV 172 (wasn't the Hoover Dam Casino the Hacienda?). For whatever reason NV 172 is still solidly signed along old US 93 to the security checkpoint at the Hoover Dam. There is still plenty of old US 93 signage still on the Hoover Dam along with at least one mileage marker on the Arizona side.
Yes, the Hoover Dam Lodge was previously known as the Hacienda. The name changed a couple years ago.
The SR 172 designation was created upon opening of the Hoover Dam Bypass, and it represents what was the state-maintained section of old US 93 accessing Hoover Dam. As mentioned, SR 172 is signed down to the security checkpoint, where it ends–so notably, the portion of former US 93 between the checkpoint and the dam was not maintained by NDOT, but by the feds.
Interesting that they've replaced the northbound I-515 shield with an I-11 shield, since at this point the freeway ahead is still recognized as I-515... The southbound one (posted directly opposite this one) does make sense, as that is heading onto the new I-11 lanes.