habitat-complete streets: the book!
DESCRIPTION
Capstone project bookTRANSCRIPT
A habitat-complete street is a street designed and operated to enable safe access for users of all kinds--
humans and nonhumans alike.
Habitat-Complete Streets combine equitable transportation planning with urban wildlife habitat. Standard complete streets ensure safe access for all human users—this project broadens the definition of “user” to include wildlife.
-Provide viable habitat for wildlife in tree canopy along street.-Provide a safe and attractive street-level environment for all human users.-Minimize construction and disturbance to neighborhood.-Encourage a more meaningful relationship with nature for neighborhood residents
Pro
jEC
t G
oA
lS
-Pristine habitat far from development is constantly and increasingly threatened-Streets are designed for vehicles instead of people
Pro
jEC
t D
rivE
rS
1. Plant industrial area (to be renovated along with riverfront)
2. Continuing west, install planting beds and street plantings
3. replace existing vegetation at civic spaces with more habitat-suitable shrubs
4. Encourage private landowners in adjacent neighborhoods to convert vegetation on property for habitat use
AC
tio
n P
lAn
Analyzing available important Bird Area data along the Mississippi, 138 bird species were mapped to their monitoring sites (grouped by migration class on the following five pages).
American CrowCorvus brachyrhynchos
American Goldnch
Carduelis tristis
American Kestrel
Falco sparverius
American Robin
Turdus migratorius
Bald Eagle
Haliaeetus leucocephalus
Belted Kingsher
Ceryle alcyon
Blue-headed Vireo
Vireo so
litariu
s
Blue Jay
Cyanocitta cr
istata
Brown-h
eaded
Cowbird
Molo
thru
s ate
rBr
own
Cree
per
Certh
ia am
erica
naBr
own
Thra
sher
Toxo
stom
a ru
fum
Coop
er’s
Haw
kAc
cipi
ter c
oope
rii
Caro
lina
Wre
n
Thyr
otho
rus l
udov
icia
nus
Ceda
r wax
win
gBo
mby
cilla
ced
roru
m
Com
mon
Gra
ckle
Qui
scal
us q
uisc
ula
Dark-Eyed Junco
Junco hyemalis
Eastern Bluebird
Siala sialus
Eastern Meadow
lark
Sturnella magna
Eastern Phoebe
Sayornis phoebe
Eastern Towhee
Pipilo
European Starling
Sturnus vulgarisField Sparrow
Spizella pusilla
Golden-crowned Kinglet
Regulus setrapa
Grasshopper Sparrow
Ammodramus savannarum
Harris’s Sparrow
Zonotrichia querela
Henslow’s Sparrow
Ammodramus henslowii
Hermit ThrushCatharus guttatus
House FinchCarpodacus mexicanus
KilldeerCharadrius vociferus
Lark SparrowChondestes grammacus
Lincoln’s Sparrow
Melospiza lincolnii
Marsh Wren
Cistothorus palustris
Merlin
Falco columbarius
Mourning Dove
Zenaida macroura
Northern Flicker
Colaptes auratusNorth
ern Harrier
Circus cyaneus
Orange-crowned Warbler
Vermivora celataOsp
rey
Pandeon haliaetu
s
Pereg
rine F
alcon
Falco
per
egrin
us
Pine
Sisk
inCa
rdue
lis p
inus
Pine
War
bler
Dend
roic
a pi
nus
Purp
le F
inch
Carp
odac
us p
urpu
reus
Red-
head
ed W
oodp
ecke
rM
elan
erpe
s ery
thro
ceph
alus
Red-
shou
lder
ed H
awk
Bute
o lin
eatu
s
White-crowned Sparrow
Zonortichia leucophrys
Sharp-shinned Hawk
Accipiter striatus
Yellow-rumped WarblerDendroica coronata
Yellow-bellied SapsuckerSphyrapicus varius
Yellow-bellied Flycatcher
Empidonax �aviventris
Winter Wren
Troglodytes troglodytes
White-throated Sparrow
Zonotrichia albicollis
Vesper Sparrow
Pooecetes gramineus
Turkey Vulture
Cathartes auraTree Swallow
Tachycineta bicolorSwam
p Sparrow
Melospiza georgiana
Sedge Wren
Cistothorus platensis
Savannah Sparrow
Passerculus sandwichensis
Ruby-crowned Kinglet
Regulus calendula
Red-winged Blackbird
Agelaius phoeniceus
SHort DiStAnCE MiGrAntS
CHo
oSi
nG
A t
ArG
Et S
PECi
ES
American RedstartSetophaga ruticilla
Baltimore Oriole
Icterus galbula
Bank Swallow
Riparia riparia
Barn Swallow
Hirundo rustica
Black-and-white
Warbler
Mniotilta varia
Black-b
illed Cuck
oo
Coccyzu
s eryth
ropth
almus
Blue
-gra
y Gna
tcat
cher
Polio
ptila
caer
ulea
Blue
-win
ged
War
bler
Verm
ivor
a pi
nus
Broa
d-w
inge
d H
awk
Bute
o pl
atyp
teru
s
Bobo
link
Dol
icho
nyx
oryz
ivor
us Chimney Sw
iftChaetura pelagica
Chipping Sparrow
Spizella passerina
Clay-colored Sparrow
Spizella pallida
Cli� Swallow
Petrochelidon pyrrhonota
Common Nighthawk
Chordeiles minor
Common Yellowthroat
Geothlypis trichas
DickcisselSpiza americana
Eastern KingbirdTyrannus tyrannus
Eastern Wood-PeweeContopus virens
Gray CatbirdDumetella carolinensis
Great Crested Flycatcher
Myiarchus crinitus
House Wren
Troglodytes aedon
Indigo Bunting
Passerina cyanea
Least Flycatcher
Empidonax minimus
Northern Rough-w
inged Swallow
Stelgidopteryx serrip
ennis
Orchar
d Orio
le
Icter
us spuriu
sOvenb
irdSe
iuru
s aur
ocap
illus
Prot
hono
tary
War
bler
Prot
onot
aria
citr
ea
Red-
eyed
Vire
oVi
reo
oliv
aceu
s
Yellow-billed Cuckoo
Coccyzus americanus
Song Sparrow
Melospiza m
elodia
Yellow WarblerDendroica petechia
Yellow-throated VireoVireo �avifrons
Wood Thrush
Hylocichla mustelina
Warbling Vireo
Vireo gilvus
Scarlet Tanager
Piranga olivacea
Ruby-throated Hum
mingbird
Archilochus colubris
Rose-breasted Grosbeak
Pheucticus ludovicianus
rESiDEnt nEotroPiCAl MiGrAntS
Alder FlycatcherEmpidonax alnorum
Bay-breasted Warbler
Dendroica castanea
Black-throated Green Warbler
Dendroica virens
Blackburn
ian Warb
ler
Dendroica
fusca
Blac
kpol
l War
bler
Den
droi
ca st
riata
Cana
da W
arbl
erW
ilson
ia c
anad
ensi
s
Cape May W
arbler
Dendroica tigrina
Chestnut-sided Warbler
Dendroica pensylvanica
Connecticut Warbler
Oporornis agilis
Golden-winged Warbler
Vermivora chrysoptera
Gray-cheeked Thrush
Catharus minimus
Magnolia WarblerDendroica magnolia
Mourning WarblerOporornis philadelphia
Nashville Warbler
Vermivora rucapilla
Northern Parula
Parula americana
Northern
Waterth
rush
Seiurus n
oveboracensis
Olive-
sided
Flyc
atch
er
Cont
opus
coop
eri
Palm
War
bler
Den
droi
ca p
alm
arum
Veery
Catharus fuscescens
Philadelphia VireoVireo philadelphicus
Black-throated Blue Warbler
Dendroica caerulescens
Wilson’s Warbler
Wilsonia pusilla
Willow Flycatcher
Empidonax traillii
Tennessee Warbler
Vermivora peregrina
Swainson’s Thrush
Catharus ustulatus
En-roUtE nEotroPiCAl MiGrAntS
Barred OwlStrix varia
Black-capped Chickadee
Poecile atricaphillus
Downy Woodpec
ker
Picoid
es p
ubesce
ns
Gre
at H
orne
d O
wl
Bubo
virg
inia
nus
Hairy W
oodpecker
Picoides villosus
Horned Lark
Eremophila alpestris
House Sparrow
Passer domesticus
Northern CardinalCardinalis cardinalis
Pileated Woodpecker
Dryocopus pileatus
Red-bellied Woodpecker
Melanerpes carolinus
Red-breaste
d Nuth
atch
Sitta ca
nadensis
Red-
taile
d H
awk
Bute
o ja
mai
cens
is
Rock Pigeon
Columba livia
Wild Turkey
Meleagris gallopavo
White-breasted Nuthatch
Sitta carolinensis
Ring-necked Pheasant
Phasianus colchicus
PErMAnEnt rESiDEntS
From this list, the target was narrowed to canopy foragers for best chance of success in feeding and nesting behavior on an urban street. of the canopy foragers, few had an established Habitat Suitability index, which is a helpful resource for choosing plant species.
of those canopy foragers with an established HSi, the Yellow Warbler (Dendroica petechia) was chosen.
the Yellow Warbler has been observed at all ten monitoring sites; therefore, the species can presumably tolerate the range of conditions mapped in this habitat analysis.
Impervious Land Cover0-20%
Natural Land Cover
30-50%
Natur
al La
nd C
over
10-3
0%
Nat
ural
Lan
d Co
ver
0-10
%
Floodplain Forest
Maple Basswood Forest
Oak Savannah
Prairie
Wetla
nds
Blu�
s
Threat of Developm
ent
Impervious Land Cover20-50%
Impervious Land Cover
50-70%
HABitAt AnAlYSiS
the Yellow Warbler uses moisture-loving trees and shrubs such as Cottonwoods, Willows, and Alders. this mix of plants is useful in this project because Cottonwoods are considered suitable for tough urban sites due to high salt tolerance and ability to thrive with low maintenance and in a wide variety of water levels. Willows and alders can replace shrubs in the civic sites, while Cottonwoods and disease-resistant elms (to ensure a polyculture) will create a huge canopy along the street.
Cross referencing a bicycle improvements map with local patches of vegetation yields a series of connections between habitats that are already identified for reconstruction.
A wide right-of-way and minimial conflicts ensure plenty of room for habitat amendments. of the five connections found in Minneapolis, lowry Avenue has the widest right-of-way and least competitive parking, as well as several civic or open uses for potential conversion.
CHo
oSi
nG
A S
trEE
t
An
AlY
zin
G l
oW
rY
From 1980 to 2000, the percentage of the population aged 5-18 increased greatly across all five neighborhoods.
Differentiations in zoning provide for several conditions for planting.
Gro
Un
D-l
AYEr
PlA
nt
PAlE
ttE
the high percentage of kids in the region resulted in plant selection not just for hardiness, but for color in the hopes of a stimulating and playful streetscape for kids.
Curb extensions ensure safe crossing for pedestrians, and colorful bike lanes and bike boxes make for good visibility for safer cycling.
StrE
Et in
tErv
Enti
on
S
lAn
E Co
nFi
GU
rAti
on
Sthese lane configurations were designed in pieces, to be applied modularly across the street where appropriate. this allowed for design across a large scale (25 block) street.
these lane configurations (see next 8 pages) cover the different conditions found on the Master Plan. Each configuration features plenty of space for bicyclists, while also maintaining or expanding existing sidewalk facilities.
4 WAY intErSECtion PlAn
N6 FOOT BIKE LANE14 FOOT BIKE BOX8 FOOT PLANTERCURB BUMP OUTS
this lane configuration restricts vehicular traffic to one lane in each direction. A planting bed and colored bike lane are installed in the remaining space.
N
6 FOOT SIDEWALK6 FOOT BUS STOP 6 FOOT BIKE LANE14 FOOT BIKE BOX8 FOOT PLANTERCURB BUMP OUTS
4 WAY intErSECtion WitH BUS StoP PlAnto ensure safe transport for bus riders as well, bus stops feature colored walkways crossing bike lanes. to minimize traffic interference, planter strips are cut back to allow buses to pull partially over.
4 WAY intErSECtion WitH BUS StoP PErSPECtivE
Bike boxes ensure better visibility for cyclists at intersections. Every intersection also features bumpouts for increased pedestrian crossing safety, and improved crosswalks at major intersections.
Sto
rMW
AtEr
An
D C
on
StrU
Cti
on
to reduce construction, only the outer half of the street will be regraded. the vertical exaggeration shown here exemplifies the existing slope of the street combined with the proposed sloped bike lane. the curb cuts into the planting bed from both sides allow stormwater to flow in, while the sidewalks retain their existing drainage system (presumably into alleys or yards).
Cottonwoods take up a lot of moisture, but in the unlikely event that a bed floods, an overflow pipe connects right into the existing drain inlet pipe, making use of existing infrastructure.
10 YEAR 1 HOUR STORM EVENT AREA OF LOWRY AVENUE
5 INCHES/HOUR 10.5 ACRES
TOTAL RUNOFF
51 CUBIC FEET PER SECOND
25 BLOCKS 2 CUBIC FEET PER SECOND PER BLOCK
A deep structural soil pit is the best option for a successful planting. the bike lane can be paved directly over a Class 5 structural soil, giving plants in the bed even more room to stretch their roots.
the construction costs will likely be balanced by the monetary benefits of the plantings.
According to the national tree Benefit Calculator, a 24 inch Eastern Cottonwood provides overall benefits of $243 every year.
if the tree is cared for and grows to 29 inches, it will provide $296 in annual benefits.
$ $construction bene�t
FIREPOST
LIBRARY
I-94
LYN
DA
LE
EMER
SON
FREM
ON
T
PEN
NN MIS
SISS
IPPI
56
42
31
Eastern Cottonwood (Populus deltoides)
American Elm “Princeton” (Ulmus americana)
Green Alder (Alnus crispa)
Slender Willow (Salix petiolaris)
Bus Stop
Overhead Powerline
Crosswalks (Major Intersection)
Three-Way Intersection
Residential Zone
Commercial Zone
Civic Zone
Highway Crossing Zone
Industrial Zone
Perspective
MA
StEr
PlA
nAt the canopy level, Cottonwoods and Elms, forty feet on center, fill the street on both sides. About 20%, or two trees per block, are Elms, ensuring some remaining canopy in the event of a problem with the Cottonwoods. the Elms weave along both sides in a kind of naturalistic banding pattern, with about four trees on one side followed by four trees on the other side. At the highway crossing, a stepped planting of trees minimizes the crossing distance for birds going to the river.
the planting design at the ground level includes a shift from being mostly grasses with a few forbs, to mostly forbs with a few grasses, giving an iconic ex-perience as one approaches the river from the park-way—the journey will be increasingly filled with bright, colorful flowers (see planting plans, next 12 pages), shown in this abstracted color chart.
FIREPOST
LIBRARY
I-94
LYN
DA
LE
EMER
SON
FREM
ON
T
PEN
NN MIS
SISS
IPPI
56
42
31
Eastern Cottonwood (Populus deltoides)
American Elm “Princeton” (Ulmus americana)
Green Alder (Alnus crispa)
Slender Willow (Salix petiolaris)
Bus Stop
Overhead Powerline
Crosswalks (Major Intersection)
Three-Way Intersection
Residential Zone
Commercial Zone
Civic Zone
Highway Crossing Zone
Industrial Zone
Perspective
the industrial area is going to be renovated within twenty, thirty, or perhaps fifty years, so the design need-ed to be flexible. the planting width here is therefore increased, filling in all along the edges of the buildings and yards with trees. When the new bridge and other spaces are constructed, some trees can be removed, still leaving enough that birds will be served on their last leg to the river.
the canopy generally is as continuous and dense as possible, given constraints like alleys and power-lines, so that Yellow Warblers have a corridor of veg-etation from the green of the parkway to the river.
Scientific name Common name Andropogon gerardii Big BluestemAster laevis Smooth AsterCornus sericea red twig DogwoodHemerocallis fulva orange DaylilyEchinacea Purpurea Purple ConeflowerPanicum virgatum Switchgrassverbana hastata Blue vervain
residential areas would benefit from more privacy, so taller plant species were chosen. Flowers increase from west to east.
+
++
++
+
+ +
+
+
+
+
+
+
+
+
+
++
++
+
+
++
+
+
BIG BLU
ESTEM
SMOOTH ASTER
SMOOTH ASTER
PURPLE CONEFLOWER
BLUE VERVAIN
BIG BLU
ESTEM
RED TWIG D
OGWOOD
SWITCHGRASS
rESi
DEn
tiA
l W
ESt
+ +
+
++
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
BIG BLU
ESTEM
BLUE VERVAIN
PURPLE CONEFLOWER
RED TWIG D
OGWOOD
SWITCHGRASS
SMOOTH ASTER
ORANGE DAYLILY
ORANGE DAYLILY
PURPLE CONEFLOWER
rESi
DEn
tiA
l EA
St
Scientific name Common name Cornus sericea “isanti” red twig Dogwood “isanti”liatris Spicata Dense BlazingstarHemerocallis fulva orange DaylilyPanicum virgatum “rotstrahlbusch” Switchgrass “rotstrahlbusch”rudbeckia fulgida Brown-Eyed SusanSchizachyrium scoparium little Bluestemverbana hastata Blue vervain
Commercial areas would benefit from more visibility, so shorter plants and cultivats were chosen. Flowers increase from west to east.
+
++
++
+
+ +
+
+
+
+
+
+
+
+
+
++
++
+
+
++
+
+
LITTLE BLUESTEM
BLUE VERVAIN
DENSE BLAZINGSTA
R
BROWN-EYED SUSAN
BROWN-EYED SUSAN
LITTLE BLUESTEM
RED TWIG D
OGWOOD “ISANTI”
SWITCHGRASS “ROTSTRAHLBUSCH”
CoM
MEr
CiA
l W
ESt
++
+
+
+
+
+
++
++
+
+ ++
+ +
+
+
+ +
LITTLE BLUESTEM
LITTLE BLUESTEM
SWITCHGRASS “ROTSTRAHLBUSCH”
DENSE BLAZINGSTA
R
BROWN-EYED SUSAN
BROWN-EYED SUSAN
BROWN-EYED SUSAN
ORANGE DAYLILY
ORANGE DAYLILY
ORANGE DAYLILY
BLUE VERVAIN
DENSE BLAZINGSTA
R
RED TWIG D
OGWOOD “ISANTI”
CoM
MEr
iCA
l EA
St
Civic properties (a post office, library, and fire house) receive the same street treatment as commercial areas, but have the added habi-tat benefit of wildlife-suitable shrubs, replac-ing existing vegetation. (See next 3 pages.)
this series of plantings provides for a wide range of users—bicycle commuters, who can move safely due to high visibility, pedestrians walking to a bus stop or just to a friend’s house, shoppers taking advantage of new and revitalized commercial areas, and, of course, Yellow Warblers, flying along their migration path in search of a good spot to nest. this layered habitat serves all of these needs, while also creating an iconic, tree-lined street filled with stimulating color and texture.
Con
ClU
Sio
n
A Habitat-Complete Street is a viable, safe, attractive alternative to the standard transit corridor, and it bridges the gap between street design for multi-modal users and urban habitat for increasingly vulnerable wildlife.
rESo
UrC
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