HomeMy WebLinkAbout2016 Seawall Monitoring UpdateSeawall Monitoring
By Frank Watanabe, PE
City Engineer
4-13-16 City Council Meeting
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City Council approved in May 2015 the consultant
engineering assessment of the seawalls.
The engineering assessment included six miles of
the Southern Canal System:
�. South Collier Canal
George Street Canal
Schumann Waterway
4. Elkham Waterway
The assessment was completed in August 2015, the
final report identified only 2.96% of the seawalls
as failing.
Types of Canal Seawalls
* Concrete Transite 30.3%
Metal/Metal 27.8%
® Concrete/Metal 2.2.%
® Rip rap rock 1.9%
Concrete/Vinyl 0.3%
Wood Seawall 0.13%
Wood piles 0.13%
* Wood/Steel 0.13%
* No wall - earth berm 37.5%
Failing Seawall locations
Street
location
Canal
Rank
Visited
1.
243 Joy Haven Drive
Elkham
1
2/22/16
2.
443 Joy Haven Drive
Elkham
1
3/7/16
3.
inn George Street
George
2
3/4/16
4.
1137 George Street
George
2
3/4/16
5.
1179 George Street
George
2
3/4/16
6.
1261 George Stree
George
2
3/4/16
7.
862 Schumann Dr.
Schumann
2
3/4/16
8.
868 Schumann Dr.
Schumann
2
3/4/16
9•
874 Schumann Dr.
Schumann
2
3/4/16
io.
807 Bailey Dr.
Schumann
2
3/4/16
11.
81g Bailey Dr.
Schumann
2
3/4/16
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Seawalls
from Barber Street to
Elkham Dam
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443 Joy Haven
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City has over 7 miles of canals and waterways with
various types of seawalls and earth berms.
• Eleven (u) seawalls or 2.96% of existing system is rated
as failing per engineering assessment.
�.a City Engineer revisited and conducted a visual
inspection of the a failing seawalls.
• Three seawalls along Joy Haven were verified by license
professional survey that they are on private property.
• Resident at 219 Joy Haven is redoing the wall at a cost of
$25,000 (design and construction).
• Emergency plan for any fallen wall is to buried the wall
and then charge property owner for the material and
labor, if on private property.
Questions
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