Hill Road and Roe Street Projects

The Ada County Highway District (ACHD) is designing improvements for Hill Road, Castle Drive to Outlook Avenue and Roe Street, Limelight Street to Caswell Street as part of the Northwest Boise Improvements project. The purpose of this project is to improve safety and increase connectivity for pedestrians.

Hill Road, Castle Drive to Outlook Avenue

Project Description

• Reconstruct the northwest and northeast corners of the Castle Drive/Hill Road intersection to shorten pedestrian crossing distance and slow vehicles.
  • This will create a bulb-out.
• Install a new 7-foot sidewalk on east side of Hill Road to provide a connection between Castle Drive and Outlook Avenue.
• Minor roadway widening to develop consistent 5-foot bike lanes.

Enhanced Pedestrian Crossing at Cynthia Mann Elementary School

Project Description

• Install a raised crosswalk with a rectangular rapid flashing beacon (RRFB) on Castle Drive in front of Cynthia Mann Elementary School.
• Add a bulb-out on the north side of Castle Drive to shorten the pedestrian crossing and increase safety.
• Install green stormwater treatment facilities.
• Improvements will remain completely within ACHD right-of-way.

Roe Street, Limelight Street to Caswell Street

Project Description

• Install 5-foot sidewalks on both sides of Roe Street from Limelight Street to Caswell Street.
• Narrow travel lanes and remove on-street parking to limit impacts to adjacent property.
• Add new stormwater collection facilities (swale and bioinfiltration swale) to accommodate stormwater runoff.
• Install new marked crosswalks on Roe Street and Caswell Street.