WLB
is responsible for underwriting and choosing the designs, applying
for any necessary permits, and having the installations done.
Before
the Legacy Project was chosen, WLB funded the design for the Hawthorne
with private donations and the Steel with a grant from Osram/Sylvania.
Once the Legacy Project’s broader scope was adopted, WLB,
with help from the Regional Arts and Culture Council (RACC), chose
and commissioned two local artists to develop lighting schemes for
the Burnside and Broadway. Lighting designers and technicians from
various firms served (pro bono) as WLB’s technical design
committee.
Mayor Katz and Chair Linn agreed
to solicit private donations to fund the Legacy Project. Funds are
needed for engineering the construction drawings, for purchasing
hardware and installation as well as for on-going energy and maintenance
costs.
In
2000 Mayor Katz announced that two energy companies which serve
the greater Portland area had offered to help with two bridges.
Legacy Committee Chair, Fred Miller, donated $60,000 from PGE to
be placed in a trust fund for installing the Hawthorne lights and
the Regional Community Manager for PacifiCorp pledged a significant
amount of the funds necessary for the Burnside Bridge lighting project.
The single stipulation of each energy company donation is that “their”
bridge be done as part of a “multi-bridge” lighting
project. WLB had already received an anonymous donation of $7,000
to upgrade the lights and color filters on the Morrison Bridge.
All agreed to do these three bridge’s lighting systems as
Phase 1 of the Legacy Project.
-
Energy Crisis Response
As
the millennium turned, WLB was on track to add lights to bridges
on either side of the Morrison Bridge which has been architecturally
lighted for more than a decade. Lights to illuminate the moving
features of the Hawthorne Bridge were to be in place in time for
Portland's 2001 Rose Festival. There was hope of beginning the application
process for the Burnside design the following year. Then the energy
crisis intervened. Not only did WLB agree to postpone adding new
lights, WLB agreed with the County’s decision to switch off
the colorful lights on the Morrison Bridge piers during the energy
crisis. The electric companies that had agreed to fund installations
on Hawthorne and Burnside re-confirmed but “paused”
their commitments “till the regional energy supply situation
was resolved”.
During this time WLB kept busy double-checking the proposed designs
for maximum energy efficiency--a design goal from the outset—and
responding to a request from Multnomah County, the owner/operator
of the downtown bridges. In February 2002 WLB commissioned a study
of the feasibility of generating alternative (sustainable) energy
to light the Hawthorne, Morrison and Burnside bridges. If economically
viable, WLB would work to install such power-generation equipment
rather than use energy from the region’s electrical grid for
bridge lights.
The study consultants, Glumac International, were advised by energy
experts, WLB representatives and other stakeholders. They focused
on the potential of installing photovoltaic (pv) arrays on a county
building which already had an adaptable support framework on its
roof. Study results showed that it is possible to design a pv system
adequate for the bridges and to make net-metering arrangements,
but the pay-back period is too long (100+ years) to be financially
viable at this time.
The
advisory committee next examined the potential of local wind generation.
Sustainability staff from the City of Portland provided available
wind data, turbine system costs, and efficiency calculations they
had calculated for an area with existing meters near the Portland
airport. Unfortunately, that estimated pay-back period is also too
lengthy--at today's costs--for bridge-lighting consideration.
WLB decided to renew its request of
Multnomah County, the City of Portland and the bridge sponsors to
approve powering lights with renewable energy (see NEWS). By purchasing
“green” power, as originally planned, the bridge lights
will support local utilities’ efforts to develop more alternative
energy sources. The bridges will also provide a highly-visible demonstration
project for civic use of “green” power, a valuable public
education element of the project.
The bridge lights will show the region’s commitment to preserving
the environment and delight all who see Portland at night.