Council approves Antelope Flats master plan amid resident safety and connectivity concerns

The Redmond City Council on May 20 approved Antelope Flats’ master development plan and tentative subdivision (Ordinance 2025‑09) and adopted a resolution to annex the property into the city, clearing the way for a 32‑lot, two‑phase single‑family subdivision at 3758 Southwest Helmholtz Way.

Planning Director Kyle Roberts told council the 10‑acre site is in the Southwest area plan and will be zoned R‑2 (low‑density residential) on annexation. The proposal calls for lots roughly 9,000 to 12,000 square feet, a half‑acre open‑space tract on the west side with a 10‑foot multiuse path, sidewalks on internal streets, and required upgrades to Helmholtz Way where the property abuts the arterial.

Assistant City Engineer Lindsey Crumsider and applicant engineer Hayes McCoy described transportation and emergency‑access constraints. The project will extend Southwest 40th Street and build part of Antelope Avenue; full through‑access to the south requires right‑of‑way dedication from the property to the south. Where Antelope terminates at the southeast corner the plan provides an emergency access with removable bollards; the Redmond Fire & Rescue requirement for a functional emergency access calls for 20 feet of pavement width (staff said current plans call for 15 feet in a partial‑width option). The Planning Commission recommended widening the pavement at the southeast corner to 20 feet to allow public two‑way access; staff recommended retaining an emergency‑access condition because Helmholtz is an arterial and access management limits direct connections.

Public comment was substantial and focused on evacuation and traffic safety. Residents — including Marty Nelson, Mark Bonner, Ed Hughes and Dan Hamilton — warned of constrained egress in the area, recounted near‑misses and cited the risk of wildfire evacuation bottlenecks. Speakers urged completing Antelope Avenue and other connections now, slowing Helmholtz, installing stop signs at local intersections, and ensuring emergency access would function in a real incident. Staff described recent speed studies: a covert speed study at Zenith/40th showed an average 21 mph with an 80th‑percentile speed of 26 mph, while 40th Street posted 25 mph had an average speed of about 30 mph and an 80th percentile of 35 mph; staff said bike lanes and centerline striping are planned as traffic‑calming measures.

Council and staff clarified emergency‑access expectations: city code requires one primary access and one emergency access for subdivisions; emergency access points are intended primarily for equipment and may be gated with master locks for firefighter use, though staff said gates could be used by the public in an emergency if opened. Crumsider explained three scenarios in the transportation analysis depending on the southern neighbor’s dedication of right‑of‑way: with full right‑of‑way the developer would build a full street; with 30 feet of right‑of‑way a full street could be built; with only 10 feet the applicant could build a partial street (emergency access) that would not support two‑way public traffic.

Council held first and second readings and then approved ordinance 2025‑09 by roll call; the council also adopted the annexation resolution (2025‑04). Staff and the applicant will return with final engineering, a landscaping/amenities plan for the open‑space tract to be approved before Phase 2, and deed or right‑of‑way documentation if the southern property owner dedicates land. The Planning Commission had recommended one modified condition to require a wider pavement at the Antelope terminus; staff retained its original emergency‑access condition in the approval.

Council members recorded their votes on the ordinance and resolution; staff noted that the master development plan approval is subject to the conditions in the staff report and the transportation analysis.