Objectives of the Capital Improvement Plan

  • Develop a comprehensive understanding of the current condition of the County’s six Willamette River bridges
  • Provide a rational basis for identifying and prioritizing capital projects
  • Establish criteria for determining priorities and selecting projects
  • Provide opportunities for stakeholder/public input, including consultation with key partner agencies
  • Conduct a seismic sufficiency evaluation
  • Identify needs, projects and costs to maintain the bridges to identified performance standards
  • Assess life cycle and maintenance needs for key mechanical, electrical and structural systems and paint
  • Consider and compare programmatic rehabilitation costs versus replacement costs for the four oldest bridges

The Capital Improvement planning process embodies values that are important to Multnomah County, including safety, social justice, sustainability, emergency preparedness, community health and public input. The County is considering a number of performance attributes that are important to bridge functionality and community livability (see below). These will be used to help evaluate a range of options that will then be prioritized in order to maintain and improve the bridges over the next two decades. 

Movable Operations
The drawbridges’ ability to maintain movable operations, including river and roadway traffic
Regional Alignment
How well the projects align with adjacent Partner Agency CIP projects and regional plans, including emergency preparedness plans
Structural Integrity
The structural condition of the bridges (using national bridge rating standards), including paint system ability to preserve the structural condition of the bridge
Emergency Preparedness
The bridges’ ability to resist seismic, flood and other emergency events
Overall durability, longevity and maintainability of structural and roadway surfaces and ease of maintenance; accessibility and safety considerations for maintenance personnel
User Safety
Multi-modal (including river traffic) safety on the facilities and approaches
Livable Community
How the improvement promotes a multi-modal community including the use of bicycles, transit, pedestrians (ADA compatibility) to encourage a more livable and healthy community
Social Justice
How the projects serve traditionally underserved (minority, low income, limited English proficiency, youth, elderly, disabled) communities
Long-term economic and environmental well-being of the community including preservation of the historic and iconic nature of the bridges
Traffic Operations
Safe, efficient operations of motor vehicles , freight mobility, and congestion reductions