Item No. 8b_supp 
Meeting Date: September 10, 2019 
Passenger Loading Bridge (PLB) Replacement
Additional Funding 
Commission 
9/10/19

PLB Project Locations 
Nine (9) PLB's
were approved
for replacement
under CIP
#800793 
Three (3) have
been completed
(Green) 
Three (3) are
designed
(Yellow) 
Three (3) will
start design
early in 2020
(Red) 

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Cost Drivers 
Discovery of subterranean lines 
Lack of as-builts for existing Passenger Loading Bridge foundations 
Foundation expansions to meet new seismic code requirements 
Hydronic isolations for Pre-Conditioned air system 
400 Hz aircraft power system replacement and upgrades 
Electronic Ground Support Equipment charging station and other
building interference 

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Project Cost Drivers  Gate S11 
Construction challenges 
One of the foundation bolts had been destroyed and
Original                                                                            another was damaged 
Foundation
location                  New
Foundation
and anchor                                                A new foundation was required 
bolts 
A water line runs right through the rotunda foundation 
New seismic code requirements 
Long fixed walkway 
Increased mechanical cost 
Budget 
Original Estimate: $1,100,000 
Actual Cost: $1,429,000 

4

Project Cost Drivers  Gate S6 
The PLB failed prior to the scheduled replacement 
Resources were reassigned to expedite the bridge replacement 
Other bridges that were in design were delayed 
Construction challenges 
Unidentified foundation conditions 
Existing foundation modification did not meet seismic code,
requiring demolition and new expanded foundation 
Aircraft Power was consolidated into one larger supply box 
Budget 
Original Estimate: $1,100,000 
Actual Cost: $1,211,000 

5

Project Cost Drivers  Gate C15 
Construction challenges 
Water line located within the planned foundation
expansion 
Location of an unknown industrial wastewater
system line 
Drilled shaft foundation 
Addition of an extended corridor section 
New 400 Hz aircraft power unit needed as existing
PLB did not have one 
Budget 
Original Estimate: $1,100,000 
New Estimate: $1,341,000 
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Project Cost Drivers  Gate D4 
Construction challenges 
Hydronics System 
No Isolation valves at the individual gates;
isolation valves will need to be installed
before PLB can be replaced 
Long length of piping along the fixed
walkway 
Original Estimate: $1,100,000 
New Estimate: $1,365,500 

7

Project Cost Drivers  Gate B10 
Construction challenges 
Integrated Wastewater System lines surround
the existing foundation 
Three Manholes 
Abandoned Fuel line 
Mitigation and removal 
Drilled shaft foundation and extended corridor
to minimize impacts to Pre-Conditioned air 
Water collection and treatment plan 
Budget 
Original Estimate: $1,100,000 
New Estimate: $1,491,000 
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Project Cost Drivers  Gate D11 
Construction challenges 
Fixed walk way foundations 
Two drilled shaft foundations are needed (Fixed walkway) 
One spread footing (Rotunda) 
Electrical system identification 
Multiple electrical systems are run on the fixed walkway
that are not part of PLB 
Will require cutover and new design for hazardous waste
building 
Pre-Conditioned Air valves do not isolate fixed walkway 
Budget 
Original Estimate: $1,100,000 
New Estimate: $1,377,500 

9

Project Cost Drivers  Gate C11 
C11                                   Construction challenges 
Water line located within the planned
foundation expansion 
Drilled shaft foundation 
Addition of an extended corridor section 
C15 
Budget 
Original Estimate: $1,100,000 
New Estimate: $1,229,500 

10

Project Cost Drivers  Gate C18 
Construction challenges 
Double fixed walkway 
Long Hydronics runs (Pre-conditioned air
system) 
Electronic Ground Support Equipment
system charging station Interference 
Foundation interferences 
Budget 
Original Estimate: $1,100,000 
New Estimate: $1,569,500 

11

Project Cost Drivers  Gate C9 
Construction challenges 
Concourse C 400 Hz airplane power
generation system
Major works 
Separate set of drawings/documents 
Foundation interferences 
Budget 
Original Estimate: $1,100,000 
New Estimate: $1,816,500 ($716,500) 

12

Additional Funding Request 
Request: increase the project authorization by $3,000,000 
Total project estimate: $13,000,000 
Complete the replacement of the nine (9) scheduled bridges 
2015 Project Estimate per PLB: $1,100,000 
2019 Average per PLB: $1,425,611 


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