2025 Overlays - Final Plans.pdf

This document is a comprehensive set of engineering plans for the City of Sammamish's 2025 Overlay Project, prepared by Atwell, detailing roadway improvements for Beaver Lake Road SE. The project involves pavement rehabilitation, specifically focusing on W Beaver Lake Road SE and E Beaver Lake Road SE, with multiple site plans showing detailed overlay sections, channelization, pavement markings, and utility considerations. The plans include extensive technical drawings covering road cross-sections, drainage berms, shoulder configurations, raised pavement markers, street sign installations, bollard details, and water service line requirements.

The project documents demonstrate a systematic approach to road reconstruction, with precise measurements and specifications for overlay techniques, including sections with and without shoulders, curb and gutter treatments, and detailed notes on construction sequencing, materials, and installation methods. The quantity table indicates multiple line items for various construction activities, such as minor change, mobilization, traffic control, and specific pavement work, suggesting a comprehensive infrastructure improvement initiative. The plans are prepared with municipal engineering standards, incorporating considerations for drainage, utility access, traffic flow, and long-term road performance, and are designed to enhance road safety and transportation infrastructure in the Sammamish area.