Review of Transportation Performance for I-5 Build Concepts AGENDA - - PowerPoint PPT Presentation

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Review of Transportation Performance for I-5 Build Concepts AGENDA - - PowerPoint PPT Presentation

Dec 23, 2023 126 likes •355 views

Review of Transportation Performance for I-5 Build Concepts AGENDA Purpose Modeling/Concept Overview Review of Performance Measures Break Review of Traffic Simulation Next Steps Modeling/Concept Overview

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SLIDE 1

Review of Transportation Performance for I-5 Build Concepts

AGENDA

  • Purpose
  • Modeling/Concept Overview
  • Review of Performance Measures
  • Break
  • Review of Traffic Simulation
  • Next Steps
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SLIDE 2

Modeling/Concept Overview

  • Modeling work group
  • Development of post-processed demand

volumes- group review

  • Design refinement based on screening

level review of traffic demands

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SLIDE 3

Initial Findings & Design Refinements

  • Must split SR 500 traffic to mainline and CD
  • Need to balance access and facility capacity
  • O-D patterns indicated how to braid ramps

in certain cases

  • Look for opportunities to eliminate short

distance trips from the freeway and CD system

  • Reconsider which ramps merge and which

add lanes to the freeway

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SLIDE 4

Review of Performance Measures

  • Modeling work group selected MOES

– Travel Times – Speed – Delay (mainline and ramps) – Queuing – Unserved Demand

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SLIDE 5

Average Speed I-5 Northbound - Lombard to Main St.

10 20 30 40 50 60 2:00 PM 2:30 PM 3:00 PM 3:30 PM 4:00 PM 4:30 PM 5:00 PM 5:30 PM 6:00 PM

Time Northbound Speed (MPH)

2020 Baseline 2020 Option 4 2020 Option 6 2020 Option 7

Main St. Lombard

Columbia River

I -5

SR-500

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SLIDE 6

Travel Time I-5 Northbound - Lombard to Main St.

5 10 15 20 25 2:00 PM 2:30 PM 3:00 PM 3:30 PM 4:00 PM 4:30 PM 5:00 PM 5:30 PM 6:00 PM

Time Northbound Travel Times (Minutes)

2020 Baseline 2020 Option 4 2020 Option 6 2020 Option 7

Main St. Lombard

Columbia River

I -5

SR-500

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SLIDE 7

Average Speed I-5 Southbound - Main St. to Lombard

10 20 30 40 50 60 6:00 AM 6:30 AM 7:00 AM 7:30 AM 8:00 AM 8:30 AM 9:00 AM

Time Southbound Speed (MPH)

2020 Baseline 2020 Option 4 2020 Option 6 2020 Option 7

Main St. Lombard

Columbia River

I -5

SR-500

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SLIDE 8

Travel Time I-5 Southbound - Main St. to Lombard

2 4 6 8 10 12 14 16 18 20 6:00 AM 6:30 AM 7:00 AM 7:30 AM 8:00 AM 8:30 AM 9:00 AM

Time Southbound Travel Times (Minutes)

2020 Baseline 2020 Option 4 2020 Option 6 2020 Option 7

Main St. Lombard

Columbia River

I -5

SR-500

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SLIDE 9

On-Ramps Impact I-5 Northbound (PM Peak Hour)

100 200 300 400 500 600 I-5 Mainline Start Denver ON Delta / Columbia ON Marine Dr. ON Hayden Is. ON SR-14 ON Mill Plain ON Fourth Plain ON 39th St. / SR-500 ON

On-Ramps Locations Unserved Vehicles

2020 Baseline 2020 Option 4 2020 Option 6 2020 Option 7

Queue Length for Unserved Vehicles (feet)

2000 4000 6000 8000 10000 12000 Per Lane

0.25 mile 0.50 mile 1.00 mile 2.00 mile

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SLIDE 10

On-Ramps Impact I-5 Southbound (AM Peak Hour)

100 200 300 400 500 600 I-5 Mainline Start 39th Street ON SR-500 ON Fourth Plain ON Mill Plain ON City Center ON SR-14 ON Hayden Is. ON Marine Dr. ON Denver / Delta ON Columbia ON

On-Ramps Locations Unserved Vehicles

2020 Baseline 2020 Option 4 2020 Option 6 2020 Option 7

Queue Length for Unserved Vehicles (feet)

Per Lane Per Lane 2000 4000 6000 8000 10000 12000

0.25 mile 0.50 mile 1.00 mile 2.00 mile

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SLIDE 11

Baseline Average Speed Southbound (AM Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

SR - 14

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SLIDE 12

Baseline Average Speed Southbound (AM Peak Hour)

SR - 500

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

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SLIDE 13

Option 4 Average Speed Southbound (AM Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

SR - 14

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SLIDE 14

Option 4 Average Speed Southbound 6:00-7:00 AM (Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

SR - 500

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SLIDE 15

Option 4 Average Speed Southbound 7:00-8:00 AM (Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

SR - 500 SR - 500

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SLIDE 16

Option 4 Average Speed Southbound 8:00-9:00 AM (Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

SR - 500

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SLIDE 17

Baseline Average Speed Northbound (PM Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

Hayden Island

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SLIDE 18

Baseline Average Speed Northbound (PM Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

Columbia

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SLIDE 19

Option 4 Average Speed Northbound (PM Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

Hayden Island

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SLIDE 20

Option 4 Average Speed Northbound (PM Peak Hour)

< 5 mph Average Speed 5 - 35 mph 35 - 55 mph > 55 mph

Columbia

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SLIDE 21

Basic VISSIM Model Parameters

  • HOV % provided by Metro (30% NB, 27% SB)
  • HOV operation hours (7-8 am SB, 3-6 pm NB)
  • Ramp meter rates provided by Metro
  • Ramp meter hours (6-9 am SB, 3:30-6 pm NB)
  • Origin-Destination patterns provided by Metro

– Specific to SOV, HOV, & Truck

  • Grades of + 4% provided by design team
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SLIDE 22

Basic VISSIM Model Parameters

  • Truck % provided by Metro

– 7% on mainline NB and SB – 2% for NB on-ramps during peak – SB Columbia Blvd. on-ramp at 15% – SB Marine Drive and Victory Blvd. on-ramps at 10%

  • We did not model off-peak operations
  • Model corridor focused to Bridge Influence Area

(BIA)- Columbia Blvd. to SR 500