Wisconsin notes

[SEWIGuy]

The only people would would use a Sauk City bypass are those heading to the west side of Madison. East side of Madison, Milwaukee area, Chicago, etc. are all going to still use the interstate. And none of the traffic coming south on I-39 would be able to use it anyway.

Not saying that it wouldn't be a good idea, but I wouldn't expect it to take much traffic off the interstate.

[The Ghostbuster]

A potential Sauk City Bypass was delayed to 2020 in order to widen US 12 to four lanes between Sauk City and Madison. If a Sauk City Bypass can't (or won't be built), perhaps existing US 12 should be expanded from two lanes to four lanes.

[thspfc]

I think this project delays a Sauk bypass by another 20+ years, if it was ever going to happen at all. I think the only chance it has is major growth in the Sauk/Baraboo area.

Closing the four lane gap will happen though, there's really not much left to upgrade.

[midwesternroadguy]

I legit was just thinking if there was going to be any plan to upgrade 90/94 between the 39 split and the Dells. Was up there for our annual family trip to the Kalahari. Good to see its at least on the radar

Frankly, it's more needed than the 6-to-8 conversion between Portage and Madison.

Southbound on summer Sundays; hoo boy.

Another way to relieve congestion would be to upgrade US 12 and build a Sauk City Bypass. That would be a great alternate route for I-90/94. On Sunday afternoons in summer traffic gets backed up when the road narrows from 2 lanes to 1 south of Business 12.

Yes, I've seen Sundays SB traffic back up to 2 miles north of County Trunk Z/Business 12.

I'm not sure 4-laning US 12 without a bypass will do much for weekend traffic. The stoplights at PF and in Sauk City certainly fuel the backups more. 

And where did the proposed roundabout at Sauk Prairie Road and 12 come from?  I rarely see cars waiting on the side road. Wouldn't it make more sense to build an overpass there instead of a traffic-slowing roundabout that may be replaced by an overpass anyway if/when a bypass is built?   Save the money and do it right the first time. 

[The Ghostbuster]

An overpass would likely be overkill. Although it isn't proposed, could the STH 60 and Business 12/CTH Z intersections be converted to roundabouts like Sauk Prairie Rd. intersection is?