Post Office Alley

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Location: Hobe Sound, Florida, USA. Mixed-Use Traditional

The CRA partnered with Martin County Engineering to pave Post Office Alley with pervious asphalt. This project used innovative stormwater management tools to reduce County maintenance, prevent washout, and provide a paved surface for deliveries to businesses on A1A/Dixie Highway.


Pervious Asphalt was identified as the best solution over standard asphalt paving. The total project cost is much lower, and the project time line was dramatically reduced. In addition, the material is easy to install and can be readily removed and reused as necessary.


The average cost of an asphalt roadway with typical stormwater management practices is $1 million a linear mile. This includes fees for engineering services, permitting, infrastructure such as pipes, gutters and curbing and cost of sub-grade materials. Innovative material choices like pervious asphalt can be installed directly over a dirt road without the need for exhaustive engineering drawings, state permits and other underground and off-site infrastructure for a cost of $320,000.00 a linear mile. Innovative material choices like pervious asphalt demonstrates significant cost savings to Martin County residents in comparison to conventional practices.

Lessons learned: The average cost of an asphalt roadway with typical stormwater management practices is $1 million a linear mile. This includes fees for engineering services, permitting, infrastructure such as pipes, gutters and curbing and cost of sub-grade materials. Innovative material choices like pervious asphalt can be installed directly over a dirt road without the need for exhaustive engineering drawings, state permits and other underground and off-site infrastructure for a cost of $320,000.00 a linear mile. Innovative material choices like pervious asphalt demonstrates significant cost savings to Martin County residents in comparison to conventional practices.

Transect Zone(s): T5 center.
Status: Complete
Project or Plan's Scale: Street
Features: Sustainable infrastructure.
Land area (in acres): 1
Total built area (in sq. ft.):
Total project cost (in local currency): 59000
Retail area (in sq. ft.):
Office area (in sq. ft.):
Industrial area (in sq. ft.):
Number of hotel units:
Number of residential units (include live/work):
Parks & green space (in acres):
Project team designers: Erik Ferguson
Project team developers: Martin County Community Redevelopment Agency

Previous site status:

Starting/Ending date of construction/implementation: 2012 - 2012