Revenue, traffic meeting projections in first year of tolling on SR 520


The state marked its first year of all-electronic tolling on the State Route 520 floating bridge Saturday, Dec. 29, with both revenues and traffic meeting projections. The tolling is designed to provide more than $1 billion to help pay for the construction of a new bridge.

“Thanks to early tolling, we are already collecting revenue to fund the ongoing construction of a replacement bridge," said Craig Stone, assistant secretary for the Washington State Department of Transportation, Toll Division. "Moreover," he added, "variable tolling is giving drivers a more reliable trip across the bridge. We are right on target.”

Before tolling began, forecasts anticipated there would be an initial 48 percent drop in traffic volume on SR 520. That projection matched actual traffic at the start of tolling, but as expected, volume has steadily returned. SR 520 bridge traffic is now about 70 percent of pre-toll levels.

Revenue is also on track. Since Dec. 29, 2011, SR 520 tolls have generated approximately $50 million in gross revenue.

Tolling is exceeding other expectations as well. Currently, 84 percent of all trips across the SR 520 bridge are paid with a Good To Go! account, about 12 percent higher than the original forecast of 72 percent. Through the end November, there have been more than 18 million tolled trips on SR 520.

"More SR 520 drivers are paying with Good To Go! and as a result, we’re mailing fewer toll bills,” Stone said. "A Good To Go! account is the best way to pay tolls – and even if you've received a toll bill, you can still set up an account to pay a lower toll rate.”

Stone also noted that SR 520 variable tolling is a successful traffic management tool as some drivers are adjusting their trip times to off-peak hours to take advantage of lower toll rates. Others took advantage of increased transit service and now take the bus instead of driving. The shifting and rebalancing of traffic saves SR 520 drivers about five minutes during peak period trips.

“We’re headed in the right direction,"Stone said, "but remember this is just the first year of a 30-year plan.”

King County Metro Transit and Sound Transit continue to see strong ridership growth on SR 520 across Lake Washington. Estimated daily ridership through September 2012 was nearly 19,000 – up a total of 25 percent since 2010, including a 9 percent increase since 2011.

“We’re carrying thousands of additional riders since tolling began, and surveys show more than one-third of them choose transit to save money on their commute,” said Kevin Desmond, Metro Transit General Manager.

Before the start of tolling, King County Metro Transit and Sound Transit added 140 daily bus trips across the SR 520 floating bridge, bringing the weekday service to nearly 750 bus trips on 19 routes today. Also, 179 vanpools now cross the lake on the SR 520 corridor, an increase of 50 vanpools – or 39 percent – since tolling started.

“Commuters are taking advantage of more choices to cross Lake Washington to ease the stress of their commute,” said Sound Transit CEO Joni Earl. “We’ve seen double-digit growth on our buses crossing SR 520 this year.”

About tolling on the SR 520 floating bridge

Tolling on SR 520 is expected to raise $1 billion overall toward the $4.13 billion SR 520 bridge replacement and HOV program, which builds 12.8 miles of safety and mobility improvements from I-5 in Seattle to SR 202 in Redmond.

The existing SR 520 floating bridge opened to traffic in 1963, and is vulnerable to sinking during a severe storm after weathering decades of wind and waves. The new bridge will better withstand storms and move more people across the lake with a new transit/HOV lane for buses and carpools in each direction. The floating bridge contract requires the new, six-lane SR 520 floating bridge to open to traffic by July 2015, but includes incentives for an earlier opening in December 2014.

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