through Seattle, I-405 has experienced a large increase in traffic volume since its construction. I-405 is now the most congested freeway in Washington State, particularly the segment between State Route 169 and I-90. A Nickel Project funded in 2003 originally included three planned improvements for I-405: The construction of one lane in each direction between SE 8th and I-90, replacing the Wilburton Tunnel. The construction of one northbound lane from NE 70th to NE 124th, and one southbound lane from SR 522 to SR 520. The construction of one northbound lane from SR 181 to SR 167, and one southbound lane from SR 169 to SR 167. In 2005, the "Renton to Bellevue Project" was added as an additional Nickel Project, and would have added two lanes in each direction between SR 169 and I-90. However, in November 2007, voters rejected the ballot measure which would have provided the additional funds necessary for this project. At this time the project is still largely unfunded. The web site "Road to Ruin" ranks the widening of I-405 as the fourth most wasteful highway project in the United States. The project is designed to help traffic move more smoothly on I-405. A 2008 construction project demolished the Wilburton Tunnel, which formerly covered a portion of the freeway between Factoria and Bellevue and carried the BNSF Woodinville Subdivision. On September 27, 2015, a set of high-occupancy toll lanes (HOT lanes) opened on I-405 between Bellevue and Lynnwood, replacing the existing HOV lanes from NE 6th Street to I-5/SR 525. Construction on the southern half of the HOT lanes system, extending to the SR 167 interchange in Renton, began in 2020 and is scheduled to be completed in 2024 at a cost of $1.2 billion. The City of Bellevue plans to construct a lidded park over a section of I-405 between 4th and 6th streets as part of its "Grand Connection" program. A new half-diamond interchange at Northeast 132nd Street in Kirkland is scheduled to open in 2023, while the Northeast 85th Street interchange is planned to be reconstructed as part of a bus rapid transit project. Transit service The I-405 corridor is served by several express bus routes operated by Sound Transit, King County Metro, and Community Transit. They connect several hubs that are centered around Bellevue Transit Center, accessed via the HOV ramp at Northeast 6th Street in Downtown Bellevue, and continue beyond