Central 70 Project

BPHE Approves Noise Variance Request for Nighttime Work on I70

Extends through project’s expected completion

On Thursday, August 12, Denver’s Board of Public Health & Environment approved a noise variance petition for nighttime work to proceed on I-70 through the project’s expected completion in December 2022.

The Board approved the petition with conditions laid out in the recommendation made by the Denver Department of Public Health & Environment (DDPHE). The Board’s final order(PDF, 264KB) is now available.

DDPHE will continue to enforce the decision of the Board while also holding Kiewit accountable to all criteria of the approval. DDPHE pledges to continue its open-door policy with the community and will continuously monitor and communicate about construction activities to ensure the work is done within the standards and criteria set forth in the ruling. To date, DDPHE has not documented any founded noise violations associated with this project. Monthly nighttime noise variance monitoring updates, including those related to the Central 70 project, are available.

DDPHE appreciates the service of the Board, the ongoing work of Kiewit to be responsive to community and DDPHE input, and community members who participated in the process.

The variance petition and associated exhibits are available for review here:


On September 6, 2018, the Denver Department of Public Health & Environment Board ruled that the initial variance for this work be approved with the recommendations provided by DDPHE and an amended duration of 12 months (instead of the 52-month timeframe being requested). As part of the approval of the variance, DDPHE agreed to monitor noise levels in the construction area and provide monthly updates to the Board on the project. 

You can view the original noise variance request for the Central 70 Project considered by the Board in September 2018 and other associated documents here.

On August 8, 2019 the Board voted to extend the noise variance for another 12 months.

August 8, 2019, Hearing Documents

On August 13, 2020 the Board again voted to extend the noise variance for another 12 months.

August 13, 2020, Hearing Documents

I-70 Noise Variance Fact Sheet

I-70 Noise Variance Fact Sheet Spanish Version(PDF, 183KB)

I-70 Noise Variance Fact Sheet English Version(PDF, 179KB)

Frequently Asked Questions

Frequently Asked Questions Spanish Version(PDF, 197KB)

Frequently Asked Questions English Version(PDF, 155KB)