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12th Avenue Improvements

Last updated: March 2, 2016

Construction Updates

Construction complete on 12th Ave!

Construction of safety improvements on 12th Ave at E Howell and E Olive streets reached substantial completion on Feb. 26, after some delays due to weather and other environmental challenges. People traveling through this area will now find new curb extensions on all four corners of 12th Ave at E Howell and E Olive streets, which will shorten the crossing distance and help drivers see pedestrians waiting to cross the street. In addition, there are newly marked crosswalks and upgraded curb ramps that meet current Americans with Disabilities Act (ADA) standards. Crews will return in the spring to plant grass seed in the new soil in the planting strips surrounding the new curb extensions. 

Thank you for your patience throughout construction.


If you have any remaining questions or concerns, please contact the construction outreach team at or (206) 733-9361.

Project Description

Click for largerSDOT added safety improvements at two intersections in the Capitol Hill neighborhood. The project will feature new curb extensions ("bulbs") at all four corners of the intersections of E Howell and E Olive streets on 12th Ave. These improvements will make the roadway more predictable and improve access to nearby destinations for all users, with new curb ramps that meet current Americans with Disabilities Act (ADA) standards.


Project Benefits

The goal of these improvements is to allow safer crossings for pedestrians and improve mobility for all users. Curb bulbs help reduce crossing lengths and improve visibility between people walking and people driving. The work included:

  • Curb extensions to facilitate safer, shorter crossings for people crossing the street
  • ADA-compliant curb ramps, for smoother and better access
  • New striped crosswalks that cross 12th Ave at both intersections
  • Drainage improvements at both intersections


The 12th Ave project is one of 12 selected by the Bridging the Gap Oversight Committee to be completed as part of the Neighborhood Street Fund program, funded by the Bridging the Gap (BTG) transportation levy, approved by Seattle voters in November 2006.


We completed final design in 2014. Crews began construction on September 30 and substantially completed work on February 26.

Project Materials

Final design plans

Project fact sheet

Construction notice

More Information

If you have questions about this project contact the project team at or (206) 733-9361.

If you need this information translated, please call (206) 733-9990.

Si usted necesita esta información traducida al español por favor llame al (206) 733-9990.
如果您需要把下列資訊翻譯成中文,請致電 (206) 733-9990

Kung kailangan ninyong  isalin sa Tagalog ang  impormasyong ito,  paki-tawag lang sa(206) 733-9990.

Nếu quý vị cần thông tin này chuyển ngữ sang tiếng Việt, xin gọi số (206) 733-9990.

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