i dont thing these changes will effect the interstate/ greely interchange. I invite you to sit there for an hour and watch the bike riders come down the hill so fast they can not stop or adjust speed to prevent an accident when a motor vehicle is makeing a right turn; even with its turn signal on; and even when the rider knows that/ or dosent care if the driver can see them. I have commercial drivers license and fear that intersection for the riders safety. My best opinion is to make the bike riders stop, by means of a guard rail like at max stops and force a pause to look out in the means of safety. a bike can avoid a semi truck easier than a semi truck can avoid a bike.
The hill is killing these riders with their speed, not the motor vehicles.