Public Works Announces Niwot Road Median Closure Near Diagonal Highway Near Niwot
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.
Water quality monitoring at 17 stations along Boulder Creek, St. Vrain Creek, and Left Hand Creek showed all parameters within acceptable ranges for 2026. The Public Works publishes quarterly water quality reports on the Boulder County website.
Safety data from the Erie area shows 17 reported incidents in the past 12 months, a 19% change from the previous year. The Sheriff’s Office has increased patrols along South Boulder Road and added community outreach programs in response to resident feedback.
Frequently Asked Questions
The Public Works processed over 11,454 applications last year, with an average processing time of 17 business days. Staff are available at the Erie office Monday through Friday from 8:00 AM to 4:30 PM.
The Hall Ranch open space property encompasses 395 acres and features 3 miles of multi-use trails. Seasonal wildlife closures may apply from December 15 through July 15 to protect nesting raptors and elk calving areas.
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