Express Toll Lanes (ETLs) are separated from the free lanes adjacent to them for purposes of tolling to provide drivers with a more reliable, faster trip. The ETLs use “dynamic pricing.” This means that the price to travel in these lanes varies based on real-time traffic conditions and by destination, and is adjusted automatically using an algorithm.
Below are the current toll rates and toll policies for the I-405 and SR 167 ETLs, effective as of March 1, 2024.
Note: Tolling exemption information can be found on the exemptions page.
- Minimum Good To Go! pass toll rate: $1.00
- Maximum Good To Go! pass toll rate: $15.00
Note: Drivers without a Good To Go! account will pay the Pay By Mail rate, which is the Good To Go! rate plus $2.00.
- I-405 ETLs: 5 a.m. to 8 p.m. (Monday through Friday, excluding holidays)
- SR 167 ETLs: 5 a.m. to 8 p.m. (All days of the week, excluding holidays)
Note: Holidays include New Years Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day.
For the purposes of tolling on the SR 167 and I-405 ETLs, High Occupancy Vehicles (HOVs), including motorcycles, are exempt from tolls under the following circumstances:
- I-405 ETLs: During peak periods on weekdays, vehicles with a Flex Pass set to HOV mode and carrying three or more occupants qualify as a toll-free carpool. During all other tolled hours, only two people and a Flex Pass set to HOV mode are necessary to qualify as a toll-free carpool.
- SR 167 ETLs: Vehicles with a Flex Pass set to HOV mode and two or more occupants are exempt from tolls.
Notes:
- Occupancy requirements do not apply to motorcycles and other vehicles that are otherwise exempt from tolls.
- Peak periods are defined as between 5 a.m. to 9 a.m. and 3 p.m. to 8 p.m., Monday through Friday, (excluding the holidays are observed). Holidays include New Years Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day.
- When tolling is not in effect, including holidays, the ETLs are open to all vehicles regardless of occupancy.
The I-405 ETLs opened in September 2015. The SR 167 toll lanes originally opened as High Occupancy Toll lanes in May 2008 and were converted to ETLs in October 2025. This change followed upgrades that were made to the system which added photo tolling and destination pricing to SR 167, providing a consistent customer experience throughout the I-405 and SR 167 lanes. With destination pricing, three new zones with designated entry and exit points were added to SR 167, so that tolls vary by destination rather than one single rate for the entire corridor.
Toll revenue from the facilities are dedicated to the I-405 and SR 167 corridor, and may only be used to pay for the facilities’ operating costs, debt service, and to fund projects identified in the corridor’s master plan (RCW 47.56.880).
The I-405 and SR 167 ETLs include a legal performance goal of maintaining average speeds within the ETLs above 45 miles per hour 90% of the time during peak hours.