excerpted and edited from the Roads and Public Works report on the September 2 agenda of the Committee of the Whole. Read the full report starting at page 45 here COW Agenda Sept 2 14 xx
The Town of Mississippi Mills currently operates and maintains 15 bridges and 11 large culvert structures with a span greater or equal to 3 metres. These assets currently carry a combined replacement value of $13.3 million dollars.
The Town’s infrastructure deficit relating to its bridge and large culverts is a significant issue facing the community. Short term repair needs (2014 to 2018) now sit at $4.5 million which represents 33% of the replacement value of the overall asset pool ($13.3 million). Eighteen (18) of the Town’s twenty six bridge (26) assets were built in the 1940’s and 1950’s and many of these structures are now in need of urgent and extensive repairs. Delayed maintenance and replacement practices over the last 20 years have resulted in a “log jam” in the Town’s infrastructure plan leaving the Town with few options available to further defer the situation. Many of the bridges have load restrictions in place and further cost effective deferral measures are simply no longer available.
State of Affairs – Bridges
At the network level, the Town’s bridges are currently in a poor overall condition with 2 structures rated good (BCI of 70-100), 3 structures rated as fair (BCI of 60-70) and 8 structures rated as poor (BCI of 0-60). Once the Campbell’s Bridge has been completed this fall, the number of structures will fall to 9. Current bridge priorities for the next five years are listed below along with the probable outcome of options review at detailed design:
Conc 6D Ramsay Bridge R-003 (2015)
• Built in 1946, useful life 60 years or 2006
• Recoat and repair structural steel, rehabilitate bridge deck and concrete components, replace waterproofing and wear surface. Replace traffic barriers. $417,000
• Major bridge reconstruction, 68% of replacement value
Nugent Bridge P-005
Concession 12 North Pakenham
(2016)
• Built in 1949, useful life 60 years or 2009
• Replace bridge deck, structural supports, traffic barriers and wear surface. Rehabilitate abutments. $487,000
• Major bridge reconstruction, 83% of replacement value
Levi Bridge P-003
Concession 12 North Pakenham
(2017)
• Built in 1950, useful life 60 years or 2010
• Replace bridge deck, structural supports, traffic barriers and wear surface. Rehabilitate abutments. $365,000
• Major bridge reconstruction, 57% of replacement value
Shaw Bridge P-004
Concession 11 North Pakenham
(2017)
• Built in 1954, useful life 60 years or 2014
• Recoat girders, rehabilitate bridge deck and concrete components, replace waterproofing and wear surface. Replace traffic barriers. $230,000
• Minor bridge reconstruction, 41% of replacement value
Back Bridge, A-001
Main Street, Almonte
(2018)
• Built in 1964, useful life 60 years or 2024
• Last deck rehabilitation in 1990
• Repair girder ends, rehabilitate bridge deck and integral concrete components, replace waterproofing and wear surface. Replace traffic barriers and parapet walls. $1.318M
• Major bridge reconstruction, 56% of replacement value
Short Bridge, A-002
Main Street, Almonte
(2018)
• Built in 1964, useful life 60 years or 2024
• Rehabilitate bridge arch and concrete components, replace waterproofing and wear surface. Replace traffic barriers.
$599,090
• Major bridge reconstruction, 56% of replacement value
