The Portland Bureau of Transportation (PBOT) announced proposed updates to the TRN-1.28 administrative rule, which sets the standards for curb extensions on development projects. In a move to streamline clarity and reflect the changing landscape of bike lanes and transit priorities, this overhaul could impact future building projects around the city.
The proposal brings several adjustments, including an updated policy exception map that better aligns with existing and upcoming bicycle and transit projects. Furthermore, narrow streets that are considered Major City Bikeways will generally be exempt from the curb extension requirement unless they also hold the designation of a Main Street. This nod to practicality acknowledges the challenge of fitting curb extensions within more confined urban corridors where space is already at a premium. According to official documents from PBOT, the intent is to “support longer-term future bicycle improvements and better align with the PBOT Traffic Design Manual.”
Utility conflicts can throw a wrench into curb extension projects, and city staff are pushing for clearer rules on when to hit the brakes on these improvements. The proposed changes reflect a trend towards a more nuanced approach, allowing for the suspension of curb extension requirements when the presence of utilities complicates construction. Downloads for the draft of TRN-1.28 and its appendix, which includes the policy map, are available for those looking to dive into the specifics…