3 CSTNE Concept Designs

Note - this post has been updated to include an overview list for each of the 3 CSTNE concept designs

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The following are the 3 CSTNE Concept Designs that will be presented and discussed at the upcoming ANC6A Transportation & Pubic Space meeting on April 19, 2010 @ 7PM.


Existing Condition

Click HERE for the Existing Condition pdf document for detailed viewing


Concept A

Click HERE for the Concept A pdf document for detailed viewing

Design Features
• No reduction to vehicular service
• Preserves west-bound roadway capacity to handles existing traffic volumes
• Reduce east-bound vehicular lane from 2 to 1
• Add left turning lanes
• Parking is preserved, full time
• Cycle track, sidewalk level
• Pedestrian crossing distance reduced from 90’ to 52’
• Adjacent residences are further buffered from traffic by cycle track and minimal recaptured green space

Traffic Calming Features
• Chicane
• Curb-extensions
• Speed-table/pedestrian/cycle track crossings (cross streets)

Green Street Features
• Minimal increase in green buffer
• Permeable surfaces, cycle track, sidewalks, roadway
• Bioretention cells
• Low maintenance vegetation


Concept B

Click HERE for the Concept B pdf document for detailed viewing

Design Features
• Preserves west-bound roadway capacity to handles existing traffic volumes during morning rush-hours (M-F 7am - 9am) by using north side of C St parking lane
• Reduce west-bound lanes from 3 to 2 outside morning rush-hours (M-F, 7am – 9am)
• Reduce east-bound vehicular lanes from 2 to 1
• Add left turning lanes
• Parking is preserved, except no parking north side of C St during rush-hours (M-F, 7am – 9am)
• Cycle track, sidewalk level
• Pedestrian crossing distance reduced from 90ft to 52ft during rush-hours (M-F, 7am – 9am)
• Adjacent residences are further buffered from traffic by cycle track and recaptured 8ft width green space

Traffic Calming Features
• Chicane
• Curb-extensions
• Speed-table/pedestrian/cycle track crossings (cross streets)

Green Street Features
• Additional 8ft width right-of-way allocated for green buffer and Green Street features
• Permeable surfaces, cycle track, sidewalks, roadway
• Bioretention cells
• Low maintenance vegetation


Concept C

Click HERE for the Concept C pdf document for detailed viewing

Design Features
• Reduce west-bound vehicular lanes from 3 to 2
• Reduce east-bound vehicular lanes from 2 to 1
• Add left turning lanes
• Parking is preserved, full time
• Cycle track, sidewalk level
• Pedestrian crossing distance reduced from 90ft to 42ft
• Adjacent residences are further buffered from traffic by cycle track and recaptured 18ft width green space

Traffic Calming Features
• Chicane
• Curb-extensions
• Speed-table/pedestrian/cycle track crossings (cross streets)

Green Street Features
• Additional 18ft width allocated for green buffer and Green Street features
• Permeable surfaces, cycle track, sidewalks, roadway
• Bioretention cells
• Low maintenance vegetation