“The environment is where we all meet; where we all have a

mutual interest; it is the one thing all of us share. It is not only a

mirror of ourselves, but a focusing lens on what we can become.”

Green Mobility Challenge

~ Lady Bird Johnson

Team 1765 | November 15, 2011

Manchaca Expressway

Tom Ennis, Citizen

“We are the road-buildingest nation on earth.....

Your creations, your works, are public property, open to all for the service of all,

and inevitably, they affect the lives of the people for better or for worse.

Therein lies both the glory and the burden of road-building.

In disturbing the turf of this beautiful country, we have a special obligation –

not only in terms of land use, but also in aesthetic sense.

We are obliged to leave it looking as good if not better than the

way we found it.”

~ Lady Bird Johnson(remarks made Feb 23, 1966 to the American Road Builders Association)

THINK ABOUT IT

We set out to design a transportation facility that fits seamlessly into the

environment through which it passes, serves as a destination rather than merely

a means of travel, and ultimately brings the people of Central Texas together

EMULATE NATURAL HYDROLOGY

Non-Karst Bioswale Karst Bioswale

We propose to shift from traditional pipe and store “Stormwater

Management” to what we’ve coined “Regenerative Hydrologic Recycling”

BIOSWALES

Capture and reduce total stormwater volume and reduce runoff flow rates

using prepared soil mixes and native vegetation plantings of grasses and forbs

RECONNECT PEOPLE WITH NATURE

A road can serve as a destination, a place of observation, a subtle link

between the built and natural environment

ENDURING EFFICIENCY

Our self-sustaining design approach reduces lifecycle costs, provides

functional longevity, and meets the transportation and environmental

needs of Central Texas

TAK Studios

LANDSCAPE DESIGN

WILDLIFE AND HABITATThe roadway design integrates wildlife habitat and movement by preserving as

much habitat as possible and restoring habitat damaged during construction

ORCHESTRATE, INVOLVE AND INVIGORATE

Manchaca Expressway

Veloway

Earthshareof Texas

Hill Country Inline Club

Ladybird Johnson Wildlife Center

By partnering with local advocacy agencies during the design phase and as part

of the overall monitoring and operation phases, longer lasting relationships

can be formed to spread the word about corridor innovations

Our context-sensitive design incorporates distinctive elements and

conventional elements put together in non-traditional ways

“…We are obliged to leave it looking as good if not better than the way we found it”

FROM PHILOSOPHY TO REALITY

PARK & RIDE

MULTIMODAL DESIGN CONCEPTOur proposed multimodal concept includes a multi-use path through the

corridor and a “green” park and ride lot located at the junction of FM 1626

and the Manchaca Expressway

OLD BLISS SPILLAR ROAD OVERPASS

We propose to minimize the grade changes throughout the length of the

corridor. In addition, we reversed the schematic concept at Bliss Spillar Road.

Former profile

Existing ground

Proposed flatter profile

Old Bliss Road

Overpass

Overpass plan

BEAR CREEK BRIDGE DESIGN CONCEPT

Our design eliminates piers and construction within the natural stream

channel and includes restoration to encourage natural flood controls, creek

meandering and wildlife passage

200’

50’50’ 50’ 50’

200’ 200’

FLINT RIDGE CAVE ELEVATED MULTI-USE PATH/DECK

By covering the roadway with the deck/trail system we prevent water from

running into the Flint Ridge Cave surface drainage, creating a community asset

and transforming the project from just another roadway into a destination

FLINT RIDGE CAVE

Think of it as a living laboratory accessible via the path yet removed from

the fragile environment beneath

ELEVATED MULTI-USE PATH/DECK

INITIAL INVESTMENT = LONG TERM COST SAVINGSWithout extensive mitigation strategies in place, environmental damage

potential is a huge intangible cost. Our Low Impact Development long-term

benefits are invaluable.

Our Design

Average pavement width (reduced grade) 74’ x 3.6mi x $3/SF porous asphalt = $4.2m

$35/LF bioswales x 3.6 mi = $650k

115’ average disturbed earth width x 3.6mi x $2/SF = $4.4m

+50% for fixtures = $2.1m

Bear Creek structure = $8m

Flint Ridge Cave bridge = $14m

Bliss Road structure = $1.5m

Total = $34.5m

Schematic

Average pavement width: 124’ x 3.6

mi x $1/SF asphalt = $2.4m

$375/LF storm drain x 3.6 mi =

$7.2m

300’ average disturbed earth width x

3.6mi x $2 SF = $11.5m in various

earth-related issues

+50% for fixtures = $1.2m

Bear Creek structure = $6m

Bliss Road structure = $2m

Total = $30m

Year 1Year 5

Year 10Year 15

Annual Operating & Maintenance Costs

Schematic Our Design

A green road, a lean road

A pollution reducing clean road

With so many roads and places to go, think of this one in a different way~

Walking the trail, riding a bike, looking out of your window seeing natural delight

This road will be different, different indeed, sustainable, obtainable and cheaper you see

What once was just pavement is now something new, a community asset for me and for you