I agree that Flatiron was in way over their heads, but really shame on UDOT for taking their bid when they really new they were not up to the task.
That being sad I live down here and use that road every day to work and the design of it is great. I live by the thanksgiving gardens and work over in highland, and I love the commuter lanes. I just jump on and avoid the lights and pretty much never run into traffic. I think it took forever to build and seems complicated, but having driven it for over a year now, I wish all minor highways were like this (bangerter, redwood, 89, etc) you would be surprised how much less frustrating, and how much faster it is when you can bypass the lights.
I have lived here for 7 years now and before this road was constantly crowded and completely over burdened with traffic (lots of accidents etc). Now it is so much better. Just saying, blame stupid contractors (how can they even stay in business after 4 million in fines and counting), stupid UDOT for using them (although maybe not so stupid since they were cheapest and they are making money back in the fines and still stupid contractors who have to fix the mistakes), but cool road design.