NERobinsonandNE3rdSTIntersectionSafetyImprovementsSpecs Vol 1.pdf

This is a specifications document for the SR 500 NE Robinson Road and NE 3rd Street Intersection Safety Improvements project in Washington State. The project involves the installation of compact roundabouts at the intersections of NE 3rd Street and SE Robinson Road, along with associated roadway construction and infrastructure improvements. The scope encompasses 86 distinct work items across multiple work classes, including clearing and grubbing, material production and placement, and asphalt concrete paving. The project is scheduled for completion within 46 working days and requires installation of drainage infrastructure, erosion control measures, illumination systems, permanent signage, pavement markings, guardrails, fencing, and landscaping. The specifications document provides detailed technical requirements and standards for all construction activities and materials to be utilized throughout the project.

The document establishes comprehensive technical specifications and quality standards for all work to be performed, including requirements for embankment compaction, shoulder finishing, planing and placement of hot mix asphalt, textured and pigmented cement concrete pavement for roundabout features, curbs, gutters, and associated drainage systems. Material specifications, construction methodologies, testing requirements, and acceptance criteria are detailed throughout the document to ensure compliance with applicable standards and best practices for intersection safety improvements. The specifications apply uniform standards across all bidders to facilitate competitive bidding and ensure consistent quality in project execution.