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B. Motion:
Attachments:
Discussion:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: June 24, 2021
Daniel Hudson, P.E., City Engineer
Engineering Department
2021 Pavement Preservation Program - Crack Sealing & Fog Sealing
To approve the award of the construction contract for the 2021 Pavement
Preservation Program to Sealcoating, Inc. of Braintree, MA in an amount of
$238,371. Funding through Department: 160 Admin/Engineering; Fund: Bond;
Activity: Paving.
2021 Pavement Preservation Program Crack Sealing & Fog Sealing Map;
Preservation Street List by Ward
The formation of cracks in roadways are inevitable and once they appear, will
continue to evolve as the asphalt pavement ages, oxidizes and further deteriorates.
To slow the deterioration as well as the rate at which these distresses form, the
City is seeking to continue with the cost-effective approach of applying crack
sealant over distressed sections of pavement to decrease the amount of moisture
penetrating the asphalt surface and underlying layers. This type of treatment is a
routine maintenance measure with the goal of extending the pavement life and
delaying the need for more extensive treatments.
Additionally, the City is seeking to expand its maintenance toolbox by
implementing a small pilot study using a Delta Mist fog seal on Dublin Avenue
and West Hollis Street. The City plans to test this treatment for its industry
recognized structural benefits and its pavement surface renewal properties. This
product is a liquid, plant-based organic asphalt reyuvenator designed to penetrate
the asphalt surface up to a depth of 3/8”. The rejuvenating agents soften the
existing asphalt binder and restore any oxidized asphalt, and reduce loss of fine
aggregates, thereby increasing the pavement surface’s life expectancy, and
significantly slowing the propagation of cracking.
The streets selected for this year’s preservation program are in reasonably good
condition (Pavement Condition Index [PCI] in the range of 60 to 90), the majority
being residential streets, with a few arterial/major roads.
The 2021 Pavement Preservation Program is expected to crack seal approximately
23.6 miles of roadway and fog seal 1.6 miles of roadway. Sealcoating, Inc. of
Braintree, MA is a qualified provider who performed similar work for the City
last year, and they’ ve committed to holding their prices from last season (FY20).
