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Toll Collection System

Crews have wrapped up  installing electronic toll equipment in preparation for tolling the SR 520 bridge later this year. The next step is to test the equipment which will require occasional nighttime closures of the bridge as crews make adjustments to the overhead equipment.
Check out photos of the toll collection system installation on Flickr.

Is the nighttime work noisy?  Call our toll-free 24-hour noise hotline at 855-579-7368.

Traffic closure details

Where: East or westbound SR 520 between Montlake Boulevard E in Seattle to 92nd Avenue NE in Clyde Hill. SR 520 will remain open from I-5 to Montlake Boulevard E and from the 92nd Avenue NE exit east to Redmond.

When: Drivers can expect occasional nighttime closures to allow crews to test and adjust equipment until tolling starts.

For the latest closure schedule please visit our Construction Update.

Alternate routes: I-90, SR 522, I-5 and I-405

About tolling on SR 520

In December 2011, all-electronic tolling will begin on the floating section of the SR 520 bridge to help pay for the construction of a new safer bridge in 2014. This use of technology to collect tolls will keep traffic moving on SR 520 with no tollbooths, no stopping and no slowing down. Tolls will be collected in two ways: as vehicles drive under an electronic sensor, the toll will be automatically deducted from a prepaid account. Or, if the driver does not have a prepaid account, a photo will be taken of the vehicle’s license plate, and a bill will be sent to the registered owner in the mail.

For more information about tolling on the SR 520 bridge, visit

Contact us

Jennifer Charlebois, P.E.
Project Engineer

Annie Johnson
WSDOT Communications