21st Street and Northwestern Ave. Streetscape

essence of the district loft buildings and granite pavers

This booklet reflects the initial thoughts and ideas leading to the concept that was presented to the city for preliminary review. Property owners were convened for input and the resulting design has been re-submited to the city along with a cost estimate that responds to the city’s budget. There will be an additional outreach to property owners before final design that will occur in the coming weeks.

West 21st Street

21st St. and Northwestern Ave. streetscape

Illustrative overview

march 1, 2010 1

enriching promise with new infrastructure

West 21st Street

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Northwestern Avenue

a curbless environment and a swale

The above sketches reflect the conversation related to the street and swale design for Northwestern Avenue

Northwestern Avenue

Northwestern Ave. streetscape concept 3

Re-used brownstone

Streetscape Concepts Rebuilt Dock with new handicapped ramp and stair

21st Street The brownstone pavers on 21st street will be re-used. As a result of a reduced percentage of brick in the appropriate condition for re-use, the intersection of 21st and Northwestern will be concrete, which in effect creates two segments of re-used pavers. The parking lanes along 21st will be concrete forming two contained segements of 21st Street to hold the egdes of the relaid pavers and reducing the gross area to accommodate a reduced amount of re-usable paver.

Re-used brownstone

Av e n er st we rth

Northwestern Street Section see page 5

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Northwestern Avenue will feature a swale and curbless environment. The Northwestern Ave. swale will capture and clean run-off from the street and sidewalk surfaces for detention and assist in removing contaminatants and suspended solids. It will add delight and greenery for the residents in the adjacent Windows loft building and tenants in the West 300 building.

This narrow 40’ wide street will have an 8’ concrete sidewalk and curb on the west side of the street. It will have a curbless concrete walkway on the east side that features a swale on the southern end and a storm water trench feature on the north end that will collect stormwater and building condensate and direct it to the swale. Once there, the water will infiltrate and be filtered with any remaining overlflow going into the city storm inlets located at the south end of the street on the north and east side of Northwestern. Northwestern will have two way traffic comprising of a 22’-0” asphalt driveway similar to other Crossroad streets.

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Northwestern Avenue

Northwestern Avenue trench drain The trench drain is located in the valley of the street and channels storm run-off to the swale in which it drains. During dry weather conditions, condensate from nearby buildings flow to the trench drain to provide mositure to the swale

Light location detail - see page 5 Northwestern Avenue Swale Swale Detail - see page 5

West 22nd Street

Northwestern Avenue and 21st Street streetscape aerial looking north 4

Light Location Detail

Northwestern Street section

Swale Detail

Northwestern Avenue and 21st Street streetscape aerial looking north 5

Lighting Scenarios The following three schemes look at three lighting scenarios. Schemes A and B address pedestrian lighting on the west side of the street with spacing at 35’ oc and 40’ oc. Scheme C represents the plan forwarded to the city that shows pedestrian lighting on the east side of the street. Since we are dealing with a curbless environment on the east side of the street with narrower (5’-0”) circulation width along the swale we prefer the pedestrian lighting on the east side of the street with the 8’ sidewalk. The lighting will provide continuity to the side of the street with greater pedestrian traffic and provide continuity to a sidewalk interrupted by drives and curb cuts to residential and garage entrances along it’s length. We propose the traffic lights be located on the west side of the street.

West 21st Street

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Northwestern Avenue

* Traffic lights would be located on the eastern side of street as shown in Scheme B

The pedestrian lighting at a 40’ o.c. spacing helps to achieve a continuity the side of the street where most people will walk and is somewhat disparate relative to a continuous streetwall. It is a place where most people pass through relative to the residential buildings and their openings along Northwestern.

Pedestrian lighting - east sidewalk 40’ spacing

Northwestern Avenue streetscape

SCHEME A - preferred scheme*

1” = 30’-0”

3.1.2010 6

West 21st Street

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Pedestrian lighting - east sidewalk

Northwestern Avenue streetscape

35’ spacing (traffic lighting shown at 100’ spacing

SCHEME B

1” = 30’-0”

2.1.2010 7

West 21st Street

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Northwestern Avenue

Pedestrian lighting - west sidewalk

Northwestern Avenue streetscape

40’ spacing (traffic lighting shown at 100’ spacing

SCHEME C

1” = 30’-0”

2.1.2010 8

Pedestrian lighting spaced at 35’ o.c.

Pedestrian lighting spaced at 40’ o.c.

two pedestrian lights could be located here, one where the trash and generator are shown and the second between the first and second garage door to the south. We can feather the driveways to the street creating a curb situation on the first wide bay between the two gararage openings.

Pedestrian lighting spaced at 40’ o.c.

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Scheme B

Scheme C

Scheme A - preferred scheme

Northwestern Avenue streetscape

walking north from 22nd street 10

Windows Lofts

Scheme B

Swale

Scheme C

Scheme A - preferred scheme

Northwestern Avenue streetscape

walking north along swale 11

Scheme B

Scheme C

Scheme A - preferred scheme

Northwestern Avenue streetscape

walking south on western sidewalk 12

Scheme B

Scheme C

Scheme A - preferred scheme

Northwestern Avenue streetscape

walking south from 21st 13

Scheme B

Scheme C

Scheme A - preferred scheme

Northwestern Avenue streetscape

aerial looking north 14