Skip to main content

Washington I-90 tolling could start in 2015

A planned Washington Department of Transportation (WSDOT) study could make tolling on interstate-90 bridges over Lake Washington and across Mercer Island all but inevitable. Tolling on the state route 520 floating bridge began about a year ago and transportation officials have been closely monitoring two factors: the routes that drivers are now using and the cost to replace the aging 520 bridge. In response, the state legislature last session asked for a new environmental study to review the affects of toll
January 2, 2013 Read time: 3 mins
A planned 451 Washington State Department of Transportation (WSDOT) study could make tolling on interstate-90 bridges over Lake Washington and across Mercer Island all but inevitable.

Tolling on the state route 520 floating bridge began about a year ago and transportation officials have been closely monitoring two factors: the routes that drivers are now using and the cost to replace the aging 520 bridge. In response, the state legislature last session asked for a new environmental study to review the affects of tolling on I-90 between interstate 5 and interstate 405.

“What we will be doing early in 2013 is studying the tolling of I-90,” said Craig Stone, assistant secretary for the WSDOT toll division.

A WSDOT-proposed time line of the study has planned public scoping meetings in early 2013 and a complete environmental impact study by early 2014, which could then allow approval of potential tolls in 2014. The state could then begin collecting the charge in 2015 or 2016.

The overall cost of the 520 replacement project is estimated at US$4.128 billion, a decline from US$4.6 billion, but the state still needs to find US$1.4 billion. Meanwhile, WSDOT's Stone said at a Mercer Island public meeting last month that congestion has increased on Interstate 5, Interstate 90 and State Route 522 as drivers avoid tolls on SR 520.

Traffic on I-90 has increased, on average, 13 percent over pre-520 toll levels, and I-90 travel times are three minutes longer on average during the peaks, said Stone. The state can't afford to come up with the rest of the money by asking the federal government for earmarks.  "The days of 90 percent of federal dollars coming in to finance highways in our state are basically over," he said.

WSDOT spokesperson Michell Mouton pledged that no decision has yet been made on whether or not to toll I-90. But the transportation agency must carry out the wishes of the state legislature, which s them to perform an environmental assessment and engage the public in communities that border Lake Washington.  "It's not just tolling for tolling's sake," she said. "We have to look at tolling on I-90 to help with the 520 floating bridge ... one affects the other. People will have the opportunity to engage and provide input to the study.  We're looking at tolling as a strategy."

Mouton also said that no decision had been made on changing access to high occupancy vehicle (HOV) lanes to and from Mercer Island, which currently allow single-occupancy vehicle access on the I-90 express lanes.

Related Content

  • December 5, 2014
    Small toll agency adopts big city thinking
    Andrew Bardin Williams looks at a novel option for new toll road authorities. While somewhat politically controversial, outsourcing has gained traction in the business world as a model worth investigating for its efficiency and cost saving benefits. Lean start-ups tend to employ independent contractors instead of full-time employees in an effort to remain flexible and avoid costs associated with pensions, retirement places, health insurance, office space and benefit packages.
  • July 17, 2015
    APA supports automated work zone speed enforcement
    A trade association representing the highway construction industry strongly supports automated enforcement of speed limits in work zones and Maryland's experience with a similarly designed program has had very good results, the association head has told a joint Pennsylvania House and Senate committee. According to PennDOT, 24 people were killed in work-zone crashes in 2014, eight more than in 2013. Additionally, there were 1,841 crashes in work zones last year, a slight decrease from the 1,851 crashes
  • April 3, 2012
    TransCore wins contract on new HOV to Express lane conversion
    California’s Santa Clara Valley Transportation Authority (VTA) has launched the first phase of its 290km conversion of high occupancy vehicle (HOV) lanes to Express Lanes, or commonly known as high occupancy toll (HOT) lanes, with TransCore serving as lead integrator for the project. The US$11.8 million programme comes at a crucial time in Silicon Valley as it prepares for an expected 38 per cent growth in population over the next 20 years and funding for transportation improvements is projected to grow at
  • June 26, 2018
    Fasten your seatbelts: it’s going to be a bumpy ride
    A spat has broken out between two major US transportation organisations over how best to pay for road use: the ATA says tolls are ‘fake funding’ while IBTTA has scorned ‘scare tactics and falsehoods’… Much has been made of the state of US roads: everyone agrees that funding is needed – but who should pay? And how? Chris Spear, president and CEO of American Trucking Associationsm(ATA), believes finance is facing a cliff edge: the Highway Trust Fund (HTF), historically the primary source of federal revenue