Toll Facilities. The Legislature must authorize a facility as toll-eligible before it may be tolled. The Washington State Transportation Commission is the state's tolling authority with responsibility for setting toll rates. The Washington State Department of Transportation is the operator of the authorized toll facilities.
Project Financing. Over the past 20 years, the State of Washington has used various methods to finance larger transportation projects. The State Route (SR) 520 Bridge was partially paid for with toll-backed bonds, in addition to state funds, federal funds, federal loans or grants, and local funds. The Tacoma Narrows Bridge and SR 99 Tunnel used tolls to cover project costs, but used a repayment structure where tolls reimburse another state funding source used to issue bonds.
In 2019 the Legislature authorized tolling both the Interstate 405 (I-405)/SR 167 Express Toll Lanes (ETL) and various Puget Sound Gateway facilities and the issuance of up to $1.5 billion in bonds to fund various project priorities.
For the I-405 and SR 167 ETL facility, bonds supported by toll revenues from the facility are prohibited from being issued until:
For the Puget Sound Gateway facility, bonds supported by toll revenues from the facility are prohibited from being issued until: