Ladd-Lincoln-Harrison Greenway Project

The following are the notes presented during the 2017-11-13 RNA General Meeting
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Key Links

https://www.portlandoregon.gov/transportation/75123

Neighborhood Greenway Assessment PDF: https://www.portlandoregon.gov/transportation/article/542741
 

Greenway Overview

  • Vision:
    Create network of safe greenways so that people from 8-80 can safely get from-to anywhere in the city by walking, running, skateboarding, or biking

  • Current Definition - https://www.portlandoregon.gov/transportation/50518
    Streets with low traffic volume and speed where bicycles, pedestrians and neighbors are given priority.

  • Greenway 101
    https://www.portlandoregon.gov/transportation/article/554110
    Greenways are not cut-through streets

    • Vehicles should travel 20 mph or less

    • There should be a daily average of approximately 1,000 cars per day with the upper limit set at 2,000 cars

    • There should be ample opportunities for people bicycling and walking to cross busy streets, at least 50 crossing opportunities per hour, with 100 crossing opportunities per hour the preferred level of service.

  • Current greenway map

  • The neighborhood greenways with the highest bicycle traffic volumes (as of 2013) are, in order:

    • SE Lincoln-Harrison (4,230 daily bicycle trips on Harrison at Ladd);

    • SE Clinton-Woodward (2,870 daily bicycle trips on Clinton at 26th);

    • Burnside Corridor Bikeway (2,115 daily bicycle trips on Ankeny at 28th);

    • NE Going Street Bikeway (1,920 daily bicycle trips on Going at 9th);

  • Cycling mode-share for our neighborhood:

1990 Census Bicycle Mode Share

 

  • Theoretical Greenway Design

General idea is to keep cars from traveling along greenways for extended stretches

General idea is to keep cars from traveling along greenways for extended stretches

LUTC Activity: Principles we want

Here’s what we came up with during the Land Use & Transportation Committee Meeting…

  1. Unique streets should have unique solutions

  2. Diversion that is frequent enough that no single side street sees most of the diverted traffic, and so speed bumps are not needed.

  3. Connect with other greenways

  4. Seasonal flexibility

  5. No speed bumps on greenways

  6. Do not divert traffic into side streets

  7. Good, clear directional signage

You might notice there's differing—and sometimes conflicting—opinions on the best solutions.
 

This Project

First we need to take a look at what streets are designated by PBOT for cars, and which are considered Local Service streets:

Source: portlandmaps.com » Gallery » Transportation » Transportation System Plan Classifications

Source: portlandmaps.com » Gallery » Transportation » Transportation System Plan Classifications

Here’s another way to look at our neighborhood streets.

Blue streets are non-neighborhood collector streets that connect at least 2 neighborhood collectors.

Blue streets are non-neighborhood collector streets that connect at least 2 neighborhood collectors.

Here’s the scope for the Ladd-Harrison-Lincoln Greenway

Lincoln NG

Here’s how they monitor traffic.

You can determine not only vehicle counts, but direction, speed, acceleration, and types of vehicles.

You can determine not only vehicle counts, but direction, speed, acceleration, and types of vehicles.

Here’s the data they found:
Traffic Volumes

Anything not-green is bad and out of spec for a Greenway.

Anything not-green is bad and out of spec for a Greenway.

Vehicle Speeds

Anything not-green is bad and out of spec for a Greenway. Legend: Green—17-23 mph; 10% Risk Yellow—23-27 mph; 30% Risk Orange—27-29 mph; 60% Risk Red—30+ mph; >75% Risk

Anything not-green is bad and out of spec for a Greenway.

Legend:
Green—17-23 mph; 10% Risk
Yellow—23-27 mph; 30% Risk
Orange—27-29 mph; 60% Risk
Red—30+ mph; >75% Risk

Key Tool to Control Volume:
Diverters

Key Tool to Control Speed:
Speedbumps

Specifically, here’s the current proposed diverters and locations:

Ones Richmond can comment on: 30th & Lincoln and 50th & Lincoln Others are outside of our neighborhood

Ones Richmond can comment on: 30th & Lincoln and 50th & Lincoln
Others are outside of our neighborhood

PBOT Detail View of Proposed Diverter at Lincoln & 50th

PBOT Detail View of Proposed Diverter at Lincoln & 50th

PBOT Detail View of Proposed Diverter at Lincoln & 30th

PBOT Detail View of Proposed Diverter at Lincoln & 30th

LUTC Activity: Comments about current project

Here’s the top ideas we came up with during the Land Use & Transportation Committee Meeting…

  1. Remove diverter at 30th and Lincoln

  2. Bi-directional diversion 30th, around 35th, around 43rd, and 50th

  3. 50th and Lincoln absolutely

  4. Support for tightening and controlling 30th and Lincoln

  5. No speed bumps on greenway

  6. Make 30th diverter better with raised walkway

You might notice there's differing—and sometimes conflicting—opinions on the best solutions.

 

Steps you can take now…

Open meeting floor for discussion

Talk to the city at the remaining open houses (see key links above)

Take the city’s survey: https://www.surveymonkey.com/r/GK7STJ6