Policy Manual Ada County Highway District

The District was established by referendum on May 25th, 1971. It is responsible for the construction and maintenance of all streets and roads in Ada County, except those designated as state or federal highways. The District provides planning, design, construction, reconstruction, maintenance, and traffic supervision for all urban streets, rural roadways, and bridges under its jurisdiction.

The Policy Manual is provided as a service and may not reflect the latest changes to the formal document. The most current version is available at the District's headquarters, or can be obtained by calling 208-387-6100.

• Section 1000 - Ada County Highway District
• 1001 - General Overview
• 1002 - Legislative Authority
• 1003 - Organization
• 1004 - Board of Commissioners
• 1005 - Duties & Privileges of the District Commissioners
• 1006 - Commission Procedures


• Section 2000 - General Administration
• 2001 - Finance/Accounting
• 2002 - Cost Reporting
• 2003 - Year-end Statements
• 2004 - Financial Statements
• 2005 - Budget
• Exhibits


• Section 2100 - Safety Handbook


• Section 2300 - Afirmative Action Plan


• Section 2400 - Benefits
• Exhibits


• Section 2500 - Personnel Policy
• Exhibits


• Section 3000 - Project Design
• 3001 - General Overview
• 3002 - Design Function
• 3003 - Design Standards & Specifications
• 3004 - Roadway Design Standards
• 3005 - Project Checklist
• Exhibits


• Section 3100 - Development of Projects
• 3101 - Project Overview
• 3102 - Project Need and Concept
• 3103 - Project Estimated Costs
• 3104 - Project Field Review
• 3105 - Preliminary Design
• 3106 - Final Design
• 3107 - Plans Configuration
• 3108 - Bidding and Contract Award
• 3109 - Cost Share Ordinance
• Exhibits


• Section 3200 - Local Improvement Districts


• Section 3300 - General Surveying
• Exhibits


• Section 4000 - Right-of-Way and Acquisition and Management
• 4001 - District Right-of-Way Manual
• 4002 - Vacation & Abandonment of Public Rights-of-Way
• 4003 - Encroachments
• 4004 - Exchanges
• 4005 - Property Management
• 4006 - Negotiations
• 4007 - Professional Services
• 4008 - Appraisal Reports
• 4009 - Acquisition and Offers of Just Compensation
• 4010 - Administrative Settlements
• Exhibits


• Section 5000 - Traffic and Transportation


• Section 5100 - Traffic Engineering
• 5101 - Traffic Design
• 5102 - Traffic Studies
• 5103 - Traffic Data & Analysis
• 5104 - Traffic Investigations
• 5105 - Permits & Fees
• 5106 - Roadway Lighting
• 5107 - (Reserved)
• 5108 - Roundabouts
• 5188 -Roundabouts Design Guide
• Appendices A-C