Clear Creek County approves expanded hours for I‑70 peak‑period shoulder lane with new reporting, naming conditions

The Clear Creek County Board of County Commissioners on June 3 approved Resolution 25‑46, authorizing a 10‑41 permit amendment (Case SI2025‑001) that expands the days and hours of operation for the I‑70 peak‑period shoulder lane (PPSL). Approval was conditioned on expanded monitoring and annual reporting and a directive that communications refer to the lane consistently — with a board target to standardize signage and public messaging by mid‑2026.

The permit change was requested by the Colorado Transportation Investment Office (CTIO), which manages the express‑lane operations on I‑70. Piper Darlington, director of CTIO, told the commissioners that CTIO’s traffic analyses showed the shoulder lane “was not meeting the needs of the corridor,” and that traffic patterns since 2019 and especially after COVID have made weekend‑only hours insufficient.

County staff said the 10‑41 review applies 35 criteria (21 general plus 14 additional arterial‑highway criteria) and found several criteria not met. Amy Saxon, Clear Creek County staff leading the review, said criterion 5 (adverse effect on the local government…