by Tori Sheets
Blasting began in the construction area of Red Mountain Pass on Wednesday.
For about two and a half weeks travelers can expect delays of about 30 minutes, the Colorado Department of Transportation said in a statement. Blasting is expected to take place from about 11 a.m. to 2 p.m. during this time.
The blasting is part of construction on retaining walls at mile markers 79.5 to 79.4, nine miles north of Silverton.
When blasting is completed wait times will shorten, but US 550 will still be limited to single-lane, alternating traffic 24 hours a day. Traffic will be controlled by flaggers or portable traffic signals and work hours are from 8 a.m. to 6 p.m., Monday through Friday, and 8 a.m. to 5 p.m. on Saturday. During non-work hours delays will be about 6 minutes.