Just an update C470 is under construction for widening and toll lanes.
Official link: https://www.codot.gov/projects/C470ExpressLanes
Summary below:
Project Overview
The C-470 Express Lanes project will increase mobility and user choice along 12.5 miles of C-470 between I-25 and Wadsworth Boulevard. The $276 million project includes the following improvements:
Mobility Improvements:
Two additional westbound Express Lanes constructed from I-25 to Colorado Boulevard, and one additional Express Lane from Colorado Boulevard to Wadsworth.
One additional eastbound Express Lane constructed along the length of the project, between I-25 and Wadsworth Boulevard.
Additional safety and infrastructure improvements:
full reconstruction of existing pavement
new auxiliary lanes at selected locations
on- and off-ramp improvements
realignment of substandard curves
widening of existing bridges
replacing the bridges over the South Platte River