Transportation advocacy and business groups alike are supporting Seattle's Prop 1, the $1.55 billion renewal of the city's transportation levy.

It's official: Voters this fall will get to weigh in on whether Seattle should invest $1.55 billion over eight years to improve transportation infrastructure, with most funding allocated to road and bridge maintenance.

The transportation levy on Seattle ballots this fall won't grow beyond $1.55 billion, despite a push by transportation advocacy groups to go bigger. A Morales-backed amendment to increase the levy's size failed Tuesday.

Councilmember Tammy Morales offered a new proposal Thursday for a $1.7 billion transportation levy that increases spending across a broad array of programs. None of her colleagues have yet backed the proposal.

A proposed amendment to the next Seattle transportation levy pushes the city to build 500 blocks of new sidewalks in five years. However, SDOT says that goal likely isn't achievable without more funding and broader changes.

Amending the Mayor's final proposal for a transportation levy, committee chair Rob Saka has revised the proposal by increasing funding for new sidewalks, freight mobility, and electric vehicle charging.

The Urbanist’s Publisher Doug Trumm was recently on Crystal Fincher's Hacks and Wonks podcast to discuss the Seattle transportation levy proposal, which came in well short of where safe streets advocates were pushing the mayor to go. The episode is a good primer on the levy debate.

After building over 40 miles of protected bike lanes since 2015, the City of Seattle only promises around 10 additional miles through 2032. The potential for extra projects depend on additional funding beyond the mayor's levy proposal.