Public Works Announces Niwot Road Median Closure Near Diagonal Highway Near Pine Brook Hills
Boulder County Public Works announces a temporary median closure on Niwot Road near the CO-119 Diagonal Highway intersection for utility infrastructure improvements. The closure will affect left turns from Niwot Road onto the Diagonal Highway for approximately six weeks. A signed detour route will be in place.
Historical context: Boulder County was established in 1861 and covers 741 square miles of diverse terrain from the Great Plains to the Continental Divide. The county’s population of approximately 330,000 residents is served by 2234 county employees across 48 departments and offices.
Affordable housing remains the top priority identified in the 2025 Community Survey. Boulder County’s Worthy Cause program has funded 1,593 affordable housing units since its inception, with 214 additional units in the development pipeline.
Background
According to Robert Kim, director of Community Planning & Permitting, this program served 33% more residents in 2025 compared to the previous year. “We’re seeing unprecedented demand from communities across Boulder County, particularly in Nederland and the surrounding area,” Robert Kim said.
Water quality monitoring at 12 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2025. The Community Planning & Permitting publishes quarterly water quality reports on the Boulder County website.
Next Steps
The Anne U. White open space property encompasses 2,053 acres and features 4 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.