SR 520 Bridge Replacement and HOV Program - Project permits

As part of the environmental-compliance process for the I-5 to Medina project, WSDOT conducted extensive studies and analysis in accordance with the National Environmental Policy Act, the State Environmental Policy Act, the federal Endangered Species Act, and other laws and regulations. The process also required WSDOT to apply for numerous federal, state, and local permits.
 
All permits needed to replace the vulnerable SR 520 floating bridge were issued by early 2012, allowing WSDOT to proceed with the project. Some of the permits subsequently were modified or amended.

Were the permit applications based on the selected alternative design?

Yes, the permit applications were based on the design of the selected alternative, which WSDOT evaluated in the final environmental impact statement as the "preferred alternative." This alternative was selected in the record of decision, which was issued by the Federal Highway Administration in August 2011.

How were permitting agencies involved in the project?

WSDOT worked closely with local, state and federal agencies throughout the planning and design process on issues such wetland and aquatic mitigation, in-water construction, stormwater, and fish passage.

Agency staff provided valuable input and feedback during the design process. Their feedback resulted in fewer impacts to natural resources, and helped the project team identify appropriate mitigation for impacts that could not be avoided or minimized. 
 

Permits issued for the SR 520, I-5 to Medina Project

Below are many of the environmental reports, analyses and permits issued for the SR 520, I-5 to Medina Project. Some of these documents relate specifically to the 2016-17 removal of the old SR 520 floating bridge from Lake Washington. 

Section 404 Individual Permit, Section 10 Individual Permit
U.S. Army Corps of Engineers, Seattle District
 

 

General Bridge Permit
U.S. Coast Guard

 

Section 401 Water Quality Certification
Department of Ecology

 

Section 401 Water Quality Certification / Construction Water Quality Monitoring and Protection Plan
Kiewit/General/Manson (Department of Ecology approval)

 

WQMPP Supporting Documents
Department of Ecology

 

Inspection Reports: SR 520 floating bridge decommissioning
Department of Ecology

 

Kenmore Area Water and Sediment Analysis
Department of Ecology

 

Department of Health

 

Coastal Zone Management Consistency Certification
Department of Ecology

 

NPDES Construction Stormwater General Permit
Department of Ecology

 

Hydraulic Project Approval
Department of Fish & Wildlife

 

Shoreline Substantial Development Permit (Master Use Permit [MUP]) / Conditional Use Permit
City of Seattle, Department of Ecology

 

Temporary Noise Variance (latest version, variances are issued for two-week durations)
City of Seattle

 

Shoreline Substantial Development Permit / Conditional Use permit
City of Medina, Department of Ecology

 

Technical Noise Variance
City of Medina

 

Biological Assessment
WSDOT

 

Biological Opinion
U.S. Fish and Wildlife Service

 

Biological Opinion
National Marine Fisheries Service

 

Administrative Order to KGM for Barge Operations
Department of Ecology

 

Environmental Compliance Assurance Procedure (ECAP)
WSDOT

 

NEPA/SEPA Documents

SR 520 Bridge Replacement and HOV Project Draft Environmental Impact Statement
FHWA, WSDOT, Sound Transit

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project Supplemental Draft Environmental Impact Statement
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project Final Environmental Impact Statement
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project Record of Decision
FHWA

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project SEPA Addendum (Public Place Designation)
WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project SEPA Addendum (Floating Bridge and Landings)
WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project NEPA/SEPA Environmental Reevaluation (Kenmore Yard)
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project NEPA Environmental Reevaluation (Floating Bridge and Landings)
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Pontoon Outfitting and Moorage at the Port of Tacoma East Blair Berth 1 Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Proposed Changes to Construction Elements and Delivery Methods for the Floating Bridge and Landings Phase of the Project Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Revised Design of the Temporary Eastside Overwater Staging Area Memorandum
FHWA, WSDOT

  • FB&L Eastside Staging Area (pdf 1.8mb) 2012

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project NEPA/SEPA Environmental Reevaluation (Kenmore Yard Update)
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Additional Geotechnical Investigations Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Increased Peak Construction Truck Trips Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project NEPA/SEPA Environmental Reevaluation (Floating Bridge and Landings Proposed Final Design Features)
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Installation of Additional Moorage Buoys Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Rescind Changes to Stormwater Management for the Floating Bridge Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project NEPA/SEPA Environmental Reevaluation (Temporary Westside Over-water Staging Area)
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project NEPA/SEPA Environmental Reevaluation (West Connection Bridge)
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Pontoon Repairs at Vigor Industrial Drydocks Memorandum
FHWA

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Pontoon Outfitting and Moorage at Port of Tacoma Terminal 7 Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Pontoon Repairs with Coffer Cell Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- West Approach Bridge North Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- West Approach Bridge North, Foster Island Refinements Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- West Approach Bridge North, Design Refinement at Foster Island Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Tolling Equipment Final Design Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project – Tolling Equipment Installation Technical Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Geotechnical Investigation Update Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- Changes to Eastside Construction Haul Routes and Truck Trips Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project -- First Amendment to the Section 106 Programmatic Agreement Memorandum
FHWA, WSDOT

 

SR 520, I-5 to Medina: Bridge Replacement and HOV Project NEPA/SEPA Environmental Reevaluation (Floating Bridge Demolition)
FHWA, WSDOT