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What is being done to ensure a long
and healthy life for our bridges? Our
panelists discussed the “Life of a Bridge –
conception to retirement.”
Bridge inspection: The purpose of a
bridge inspection is to provide information
for immediate action to limit use of, or
close to traffic, any bridge that is shown
by inspection to be hazardous, said Mark
E. Bernhardt, P.E., Director of Facility
Inspection, Burgess & Niple, Inc. An
inspection also allows bridge maintenance,
repair or replacement to be programmed
effectively through early detection of
deficiencies.
Wave forces on bridge structures:
Rick Renna, Florida DOT’s Hydraulics
Engineer, said the initial work on the
AASHTO/FHWA Bridge Wave Task Force
has been completed. Guide specs have
been approved and future refinements in
design guide and countermeasures are
underway. He also discussed the ongoing
studies of bridge vulnerabilities in Tampa
and the Keys and the need for additional
research of wave tank tests.
Load Resistance Factor Rating (LRFR):
The shear capacity of existing reinforced
and prestressed concrete bridge members
shall be evaluated for permit loads, said
Andre Pavlov, Florida DOT Maintenance
Office. Jeff Pouliotte, Florida DOT
Maintenance Office, said one of the
challenges using LRFR load ratings to
permit overweight vehicles is many FDOT
bridges have low shear ratings using LRFR,
limiting mobility. All new FDOT bridges will
be LRFD & LRFR.
Service life of bridges: Richard Kerr,
Florida DOT Maintenance Office, said
FDOT policy requires the programming
for bridge repair or replacement within
six years when a structure becomes
structurally deficient or posted for weight.
The number of structural replacements will
slowly increase over the next 20 years,
but the increase will be manageable. A
good estimate of the structural service life
of FDOT bridges is 80 years. The bridge
repair program is a sound investment with
solid returns.
To see and listen to presentations, visit sashto.org
monday, AugUST 11
3:30pm - 5:00pm
mOVING uS FORWaRd
ORLaNdO, FL 2008
2008
TRACK 2: FINANCE/ADMINISTRATION
PUBLIC/
PRIVATE
PARTNERSHIPS
new initiatives for
addressing mobility
TRACK TWO: FINANCE/ADMINISTRATION
PUBLIC/PRIVATE
PARTNERSHIPS
new initiatives for addressing mobility
Moderator: Jim Hatter
Federal Highway Administration
Panelists:
Michael Parker
Jeffrey Parker & Associates
Simon Santiago
Nossaman, LLP
Charles Nicholas
Halcrow
Is a public-private partnership (P3) the
right fit for the state Department of
Transportation’s (DOT) next project?
Consensus from a panel of industry
experts and its moderator emphasizes
reversing the question and asking first and
foremost: is this project truly a good
candidate for a public-private partnership?
Without that focus, a best-intentioned
approach to project delivery may miss
the mark. Identifying risks inherent in
project development and delivery, along
with operation and maintenance when the
improvement is in place, is the key issue.
That evaluation means taking a hard look
at the project from every angle, asking the
“what if” questions, and then preparing
an estimate for transfer of risk. Making
decisions about who assumes those risks
builds a public-private partnership.
P3s are somewhat new in the United
States and no real database for “risk”
exists yet. As an innovative approach
to delivering projects, public-private
partnerships have seen success because,
very typically, they finish jobs early or
on-time. P3s must be built now on
assumptions, but with more jobs in
production, detailed post-project analysis
can develop a solid database for “risk.”
Questions and research always will guide
decisions in every partnership opportunity.
As basic as it seems, asking “what will
it cost us to do the project” and “what
will it cost them to do the job” can point
potential partners in the right direction
and shape strong P3s. A cost-benefit
perspective can help, as well.
How to assess and price “risk?” Is the
“liability” of design, for example, the
significant issue or does “quality time”
make sense determining “value for money?”
The panel, moderator and audience dug
into the questions. Innovation is now.
　
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