New I-90 speed limit signs

The Washington State Department of Transportation (WSDOT) and Sound Transit are introducing 14 electronic speed limit signs on westbound I-90 as part of a 2009 Two-Way Transit project.

Vehicles traveling westbound across the Interstate 90 floating bridge pass new variable speed limit signs near Mercer Island on Thursday

Vehicles traveling westbound across the Interstate 90 floating bridge pass new variable speed limit signs near Mercer Island on Thursday

The Washington State Department of Transportation (WSDOT) and Sound Transit are introducing 14 electronic speed limit signs on westbound I-90 as part of a 2009 Two-Way Transit project.

The electronic reader-boards can change speed limit numbers as needed, as well as post traffic updates and weather warnings. Many of the neon glowing signs have already been erected along the I-90 corridor between I-405 and I-5.

In total, there will be 14 variable speed limit signs in seven different locations. The signs are expected to “increase safety, decrease collisions and keep traffic moving during construction on westbound I-90 by alerting drivers to reduce their speed when backups or collisions are on the road ahead,” according to the WSDOT Web site.

The electronic signs are operated by underground sensors that gather data and adjust the speed using algorithms. Drivers’ speeds are also monitored by personnel in the WSDOT traffic management center.

The new electronic signs are common on Washington roads, existing already at Snoqualmie Pass, on U.S. Highway 2 at Stevens Pass and in other locations.

For more information on the I-90 Two-Way Transit program, visit: www.wsdot.wa.gov.


In consideration of how we voice our opinions in the modern world, we’ve closed comments on our websites. We value the opinions of our readers and we encourage you to keep the conversation going.

Please feel free to share your story tips by emailing editor@mi-reporter.com.

To share your opinion for publication, submit a letter through our website https://www.mi-reporter.com/submit-letter/. Include your name, address and daytime phone number. (We’ll only publish your name and hometown.) We reserve the right to edit letters, but if you keep yours to 300 words or less, we won’t ask you to shorten it.

More in News

t
Trees aplenty at YFS lot

Don Kovarik trims a tree at the Mercer Island Youth and Family… Continue reading

t
Island Freemasons rename lodge in honor of Dean LeClare Quigley

Ceremony for dedicated member took place on Dec. 2.

t
School district seeks ballot measure committees

The Mercer Island School District seeks interested parties to prepare statements in… Continue reading

t
Recology offers holiday cardboard recycling tips

As residents receive or purchase gifts this holiday season, the city’s recycling… Continue reading

Screenshot
King County weather: Dec. 3-5

Here is your King County area weather forecast for Dec. 3-5, 2021.… Continue reading

Keith Wagoner
Senator becomes first GOP candidate for secretary of state

Sen. Keith Wagoner will challenge Democrat Steve Hobbs, who was appointed to the statewide post in November

The Federal Way Performing Arts and Event Center is located at 31510 Pete von Reichbauer Way S. Olivia Sullivan/the Mirror
FEMA to send mobile COVID-19 vaccination unit to Western Washington

The mobile site is set to open Dec. 20 in Federal Way; additional locations to come.

t
School district opens new Pathways building for Adult Transition Program

Building is located on the Northwood Elementary site.

Courtesy of the Centers for Disease Control and Prevention
Washington health officials discuss response to new COVID variant

Things will be handled with Omicron variant similar to the Delta variant.

Most Read