Key Biscayne Master Plan 043944000.18w_Key_Biscayne_MP(forJooMag) | Page 119

Chapter 12
OV E RALL PR OG R A M OP IN IO N O F PRO B AB L E
CON S TRUC TIO N C O S T
12.1 Approach
The following elements were considered when developing this Opinion of
Probable Cost (OPC) for each phase of the project.
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Use of recent cost information from similar projects: Recent
bid prices for overhead utility underground conversion projects
currently underway or already completed in similar, local coastal
communities were used for the development of unit prices for this
planning-level OPC.
Use of comprehensive construction costs: Final bid prices for
similar projects in the Miami-Dade area were used to develop
unit costs that were applied to the overall program. This allows
for inclusion of many smaller scale costs that may otherwise be
overlooked during the master planning process.
Use of a consistent unit cost application methodology: Since it is
not feasible to perform detailed design for the entire program at this
time, bid prices from similar projects were used to create sample
model project areas for five separate area types. These sample
areas were then scaled up based on the linear footage of overhead
to underground conversion required in any given phase.
12.2 Sample Project Area Development
To develop unit costs that could be applied to quantities for a large-
scale program area, unit costs associated with various “sample projects”
representative of larger areas within the Village were developed.
Kimley-Horn first used the sample projects to model the conversion of
overhead utilities to an underground location within an assumed area.
Kimley-Horn then prepared quantity estimates for the sample project area.
Construction work elements estimated for the sample projects included the
following:
 Construction general conditions (mobilization, maintenance of
traffic, bonds, survey, etc.)
 FPL, AT&T, and Comcast main conduit installation
 Cable and equipment installation
 Service conduit installation
 Direct costs from FPL, AT&T, and Comcast for their labor,
equipment, and materials related to both installation and demolition
activities
 Pavement restoration
 Site restoration
 Landscaping for equipment screening
Based on the types of areas that exist within the Village, five sample project
areas were developed to project costs across the Village-wide project.
A summary of these five sample projects are described below::
1. Typical Residential Area/Roadway Installation (i.e. Phases 1,
2, and 3) – Units costs were developed for this sample project
area that considered installation of underground utility infrastructure
within road right-of-way in a single family residential area where
service lines would be converted from the rear to the front street.
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