Following a five-hour public hearing, Denver’s Board of Public Health & Environment voted late Thursday to extend a noise variance request for nighttime and weekend work on portions of the Central 70 construction project on Interstate 70 through Denver.

The current variance expires on Sept. 6 but will now go an additional 12 months.

As part of the approval of the initial variance in Sept. 2018, DDPHE agreed to monitor noise levels in the construction area and provide monthly updates to the board on the project.  

Kiewit Infrastructure Co. requested an extension through the completion of the project which is estimated to be in late 2020.

According to city law, overnight construction in a residential area must be under 50 decibels. The variance allows the hourly decibel average to be 75, but it can not exceed 86.

Kiewit is reconstructing a 10-mile stretch of I-70 to widen it and add express toll lanes between Interstate 25 and Chambers Road. It’s expected to conclude December 2022.

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