West Burnside/Couch Green Streets

Transcription

1 West Burnside/Couch Green Streets Portland Office of Transportation Bureau of Environmental Services Lloyd D. Lindley, ASLA Parametrix, Inc. Design Advisory Committee February 20, 2008

2 Overview I-405 North Park Blocks Washington Park PGE Park Upper Burnside Central Burnside/Couch Lower Burnside Washington Park 100-feet I-405 Willamette River Burnside drops over 100-feet between the west hills and 2 nd Avenue 2

3 Systems Conveyance Collection Infiltration Disposal D. Elkin D. Elkin Washington Park An interconnected system of conveyance, collection, infiltration and disposal facilities from the west hills to the Willamette River. I-405 Willamette River 3

4 Burnside/Couch System Northwest Style Native and native-like plants Evergreen trees Expressive of water flow from Washington Park to the Willamette River Washington Park Create a landscape that expresses the Pacific Northwest and Portland s natural areas. Bring the green of Washington Park into the City. Bring the river s edge into the City. I-405 Willamette River 4

5 Tool Box Daisy chain gutter to planter Infiltration BES Plan of Egg at curb line D. Elkin Gravity fed aeration 5

6 Tool Box Planter Track drain and conveyance Slope Swale Track drain to swale Swale V W Sidewalk Planter IN OUT Flow IN OUT T. Lipton IN OUT IN OUT Planter Slope Slope Veggie-wing (V W) Planter Tree Planter BES 6

7 Form Alternatives Curvilinear Implies movement Emulates natural forms Complements human movement Rectilinear Conforms to the rectilinear form of the street grid Creates angular edges Efficiency 7

8 Form Alternatives Curvilinear Rectilinear Patterns Patterns Edges Edges 8

9 Concept Alternatives Curvilinear Rectilinear 9

10 Upper West Burnside NW 24 th Place NW 23 rd W 20 th Place NW 19 th Ave. NW 18 th Ave. NW 16 th Ave. System Plan Direction of flow Washington Park Streetcar Terminus Grass Track NW 23 rd W 20 th Place Water Organ Aeration System Section W 18 th /19 th Fireman s Memorial I

11 Upper West Burnside Terminal Station at 24 th Place Burnside Washington Park Exclusive guideway Grass Track Trail Park Road NW 24 th Place Memorial Uptown Shopping Center Surface Parking Stop Washington Park General Section Burnside Grass Track Switzerland D. Elkin Burnside looking south 11

12 Upper West Burnside Burnside at 23 rd and Vista Stop Planters Surface Parking V W Plan at Burnside and NW 23 rd /Vista Surface Parking Stop Surface Parking V W Surface Parking Typical Section Burnside and NW 23 rd /Vista Veggie-wing on both sides of Burnside 12

13 Upper West Burnside SW 21 st Avenue Close SW Morrison between SW 21st and SW 20th Place 20 th Place Triangle SW 20 th Place Add 4 on-street parking spaces Provide streetcar stops Preserve surface parking access Morrison 13

14 Upper West Burnside Watershed area for aeration at the 20 th Place triangle Simple aeration device in the Lloyd District 14

15 Upper West Burnside Surface Parking 20 th Place Triangle Surface Parking 3-Parking 1-Parking Plan of Triangle at NW 20 th Place and Burnside Typical Section Typical Section at a triangle with gravity fed aeration feature 15

16 18 th and 19 th at the Fireman s Memorial SW 19 th Ave Upper West Burnside Burnside 4-onstreet parking Plan of 18 th /19 th at the Fireman s Memorial A SW 18 th Ave A The Island Typical partial section A-A at a triangle 16 with gravity fed aeration feature Evergreen trees reflect the Northwest and absorb CO2 year round

17 Upper West Burnside Fireman s Memorial Typical section A-A of the Island SW Alder The Island W Burnside The watershed for the 18 th /19 th aeration facility Ira Keller fountain The Source for Lovejoy and Ira Keller fountains 17

18 Upper West Burnside Discussion 18

19 Central Burnside NW 16 th Ave. NW 15 th Ave. NW 14 th Ave. NW 11 th Ave. NW 10 th Ave. North Park Blocks System Plan Direction of flow I-405 North Park Blocks 15 th / 16 th Triangle Stark Street 10 th Avenue Triangle System Section North Park Block Crossing 19

20 Central Burnside NW 16th Close Washington between W 16 th and 15th Place 15 th Avenue Triangle SW 15th Burnside Add 5 on-street parking spaces Provide streetcar stop 20

21 Central Burnside Typical Section at a triangle with gravity fed aeration feature Aeration facility in Seattle Watershed area for aeration at the 15 th Avenue triangle 21

22 Central Burnside 22

23 Central Couch 23

24 Central Couch 8.5-feet Planter Typical Section Egg 24

25 Central Burnside 10 th and Burnside Triangle 25

26 Central Burnside 26

27 Central Burnside Discussion 27

28 Lower Burnside North Park Blocks NW Broadway NW 6 th Ave. NW 5 th Ave. NW 4 th Ave. NW 3 rd Ave. NW 2 nd Ave. Couch Burnside System Plan Direction of flow North Park Blocks Willamette River Burnside Bridge Park Blocks Crossing Burnside Boulevard 2 nd Avenue System Section 28

29 Lower Burnside 29

30 Lower Burnside 30

31 Lower Couch 8.5-feet Curb extension alternative Typical V W Egg Egg Typical section Typical Curb extension 31

32 Lower Burnside 32

33 Lower Burnside Tool Bar 33

34 Lower Burnside Discussion 34

35 DISCUSSION & QUESTIONS 35