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.

For more information on companies in this article

Related Content

  • The cost benefits of LED traffic signals
    July 16, 2012
    On 11 January 2005, the Kentucky Transportation Cabinet (KYTC) began installing GELcore LED traffic signal modules state-wide through an Energy Savings Performance Contract. In tendering for the work, the energy service contractors could choose any manufacturers equipment but all of them proposed to use the GELcore brand.
  • MassDOT to start all electronic tolling in October
    August 25, 2016
    The Massachusetts Department of Transportation (MassDOT) is to move ahead with plans to completely demolish Interstate 90 toll plazas by the end of 2017 as a milestone in the state’s progress toward all electronic tolling (AET) along Interstate 90 (the Massachusetts Turnpike), the Tobin Bridge, and Boston tunnels. MassDOT has announced that AET will go live on 28 October and says the system will improve driver convenience and safety and reduce greenhouse gas-causing vehicle emissions. “When toll booths
  • The bottom line - US surface transportation system needs major investment
    December 12, 2014
    The 2015 Bottom Line Report on transportation investment needs, released by the American Association of State Highway and Transportation Officials and the American Public Transportation Association, estimates that to meet current demand it will require an annual capital investment over six years by all levels of government in the amount of $120 billion in the nation’s highway and bridge network and US$43 billion in America’s public transportation infrastructure. To meet the combined surface transportation
  • US DOTs introduce measures to stop wrong-way driving
    March 28, 2018
    Wrong-way driving (WWD) is a remarkably innocuous term for incidents that all too often cause some of the worst accidents that emergency services have to deal with. Several US states are now taking steps to minimise the problem, as Alan Dron finds out. You’re driving down a highway at night when you see approaching headlights. You initially assume they are merely those of an oncoming car on the opposite carriageway. It’s only when they are within 200 yards or so that you realise that the other driver is in