Elected leaders from across King County will gather on February 2 to consider legislative strategy and revenue options for the Regional Transportation System Initiative. A Technical Committee of City and County staff have identified $20 billion of regional roads improvements (in 2018 constant dollars) to be funded by 2040. With that analysis in hand, the next step is to consider how to fund this program. Many of the options before the Elected Officials Committee require approval by the Legislature and/or voters.
The RTSI was convened in early 2016 by King County and the Sound Cities Association (King County cities other than Seattle). Staff have met regularly to identify needs and funding options. The scope of the effort encompasses principal and collector arterials and state routes in the County. The RTSI effort does not include freeways and major highways, which are generally state-funded, or transit infrastructure.
The work of the RTSI has its roots in concerns about roads in the unincorporated areas of the County. The 2016 report of the Bridges and Roads Task Force identified a funding gap of $350 million per year for maintenance of bridges and roads. There is a structural gap in funding infrastructure in unincorporated areas because annexations have removed much of the tax base and what remains outside of the cities is small relative to the rural population. Unincorporated King County has 12% of the County’s population, but only 9% of the property tax base and 3% of taxable sales.
That discussion about rural roads and bridges expanded dramatically to encompass many of the roads needs of all the suburban cities. Many communities face heavy demands on their roads due to traffic passing through to other places. It was the task of the technical staff to think systematically about those demands. Bringing the traffic woes of the suburban cities into the conversation meant more local projects to appeal to more voters, but also ballooned the size of the task.
A little less than half the estimated cost, or $9.1 billion, is generally classified as maintenance and preservation. That’s a broad category that includes pavement and replacement of structures, but also enhancements such as ITS, lighting, storm water and non-motorized improvements. The remainder, $10.6 billion, are capacity projects drawn either from PSRC Transportation 2040 models or local comprehensive plan project lists.