15th Street Bike Facility 2nd Stakeholder Meeting

December 17th, 2012 Downtown Denver Partnership

Today’s Agenda

• Project Goals & Schedule • Existing Conditions & Proposed Changes • Traffic Model • Baseline Design • Design Details

Project Goals

• Complete key link in bike network • Dedicated on-street space for cyclists • Meet schedule and budget commitments • Not preclude future improvements

Project Schedule Jan

August

Feb

March

July

Project Initiation Stakeholder Outreach

– DDP, MBAC Design Alternatives

Stakeholder Update Modeling/Parking Analysis RTD Outreach Final Design Implementation

May

June

Fall 11/ Spring 12?

Project Schedule Jan ‘11

Summer ‘13

Feb ‘11

Mar ‘11

Jan ‘13

Project Initiation Stakeholder Outreach

– DDP, MBAC Design Alternatives

RTD Outreach Stakeholder Meeting Final Design Implementation

Dec ‘12

Summer ‘11-’12 perform full traffic analysis of 15th St

Existing Conditions (for project limits)

• 50’ curb-to-curb • Bike

– 100 peak hour • Bus

– 60+ peak hour – 9 stops on right side

• X,Y, Z pattern

• Automobile – 800-1000 peak hour – Alleys/driveways

• 11 right side • 15 left side

– 11 blocks (300ft – 52 parking spaces – 1 blk inset parking (L)

Proposed Changes • Introduce left-side bike

facility – 7’ bikeway, 3’ buffer

• Improve bus movements

• Maintain 3 travel lanes • Maintain access to

adjacent businesses • Remove 28 parking

spaces

Plan View

Traffic Model Results

Limits

• Cleveland to Lawrence/Larimer – Connection to Cherry Creek Trail – Need for bicyclist to move to right prior to

Blake and conflict with turning movements

Cleveland Entry

• Bike box treatment from Cleveland Pl – Position cyclists to

move to L side – Webb building

loading dock • Considering striping

path along Colfax from Bannock St – RTD bus stop

•

Larimer Transition

• -Leading Bicycle Interval – queue jump at Lawrence will

create a head start for bicycles to enter into the intersection.

– Provide time for bicyclists to establish their position, either in the left-turn lane at Larimer or moving to right-side of street

Larimer Transition

• -Leading Bicycle Interval – queue jump at Lawrence will

create a head start for bicycles to enter into the intersection.

– Provide time for bicyclists to establish their position, either in the left-turn lane at Larimer or moving to right-side of street

Design Details: Green Markings

• Use in conflict areas – Not recommended for

alleys and driveways – Considering use in for

mixing zones and intersections

Design Details: Intersections

• Through intersection markings

• Bicycle bays: – Two-stage turn

queue boxes – Assist right turns

from left side of street

– At intersection with existing bike lanes

Design Details: Intersections

• Through intersection markings

• Bicycle bays: – Two-stage turn

queue boxes – Assist right turns

from left side of street

– At intersection with existing bike lanes

Design Details: Mixing Zone

• Mixing zone: shared through lane for bicycles and left turn for automobiles – increased visibility of cyclists to vehicles – safety concerns with cars stopping in the

through lane and turning across bikeway

Design Details: Mixing Zone

•

Design Details: Buffer

Design Details: Buffer

Conclusion