SR 99 Tunnel Toll Rates and Policies

The SR 99 Tunnel opened in February 2019, and tolling began on Saturday, November 9, 2019. The Transportation Commission adopted toll rates for the SR 99 Tunnel on Tuesday, October 16, 2018 after it engaged in a five-month long public engagement process. During this time, the Transportation Commission considered over 1,900 written comments, and held three public meetings in Seattle during June 2018. 

Initial SR 99 tunnel toll rates range from $1.25 to $2.25 on weekdays, with overnight and weekend rates at $1.00 for drivers with a Good to Go! pass. See below for the toll rate schedule and additional rate information. Three percent toll rate increases every three years will begin in July 2022, subject to annual review by the Transportation Commission.

As directed by the Legislature, tolling on the SR 99 Tunnel is expected to raise revenues to fund $200 million of construction costs, and to fund on-going operations and maintenance. Tolling also helps manage congestion on the SR 99 corridor, particularly with tolls varying by time of day.

SR 99 Tunnel Toll Rate Schedule

All rates in the table below are for two axle vehicles with a Good To Go! Pass. Drivers without a Good To Go! account will pay an extra $2 per toll. Rates also increase per additional axle. Public buses, vanpools, emergency responder vehicles, highway maintenance vehicles, school buses, and qualified private buses are exempt from tolls in the tunnel.

Toll Rate Hours Toll Rates – FY 2019 – FY 2022
6am – 7am $1.25
7am – 9am $1.50
9am – 3pm $1.25
3pm – 6pm $2.25
6pm – 11pm $1.25
11pm – 6am $1.00
Weekends $1.00


Why Did the Transportation Commission Adopt this Toll Rate Schedule for the SR 99 Tunnel?

After considering traffic and revenue analysis, over 1,900 written comments, and comments made at public meetings in June 2018 on three identified Toll Rate Options (A, B, & C), the Transportation Commission adopted Toll Rate Option A in October 2018. The Commission made this decision for the following reasons:

  • Best addresses funding obligations and financial requirements.
  • Limited rate increases during initial years of tolling (no rate increase until July 2022).
  • Fewest rate changes each weekday (6 rate changes).
  • Gradual rate increase schedule helps distribute tolling burden over life of facility.

For more detail, check out the Presentation (pdf 610 kb) to the Transportation Commission that summarizes the analysis and public input informing their decision.