Economic

• •     Market conditions
• •     Labor disruptions

Environmental

• •     Storm water treatment and/or quantities
• •     Changes in permitting
• •     Offsite and onsite wetlands
• •     Environmental impact statement (EIS)
• •     National Environmental Policy Act (NEPA) 404 merger process

Third Party

• •     Utility issues
• •     Rail lines (regular and light)

Right-of-Way

• Acquisition problems
• Value and impact

WSDOT Management

•  WSDOT program management

Geotechnical

• Geotechnical conditions

Design Process

• •     Change in seismic criteria
• •     Bridge foundations
• •     Local arterial improvements and access
• •     Inadequate design/design uncertainty for interchanges
• •     Traffic demand

Construction 

• •     Contaminated soil
• •     Natural hazards
• •     Work window
• •     Auxiliary lanes
• •     Staging areas

Other Risks

Minor risks