In the Works - Community Newsletter In the Works April 2017 | Page 47
Now that the worst of the rains
appear to be over for the season, our
contractor crews are back at work
smoothing out some 70 blocks around
the City with a method called micro-
processing.
The micro-surfacing process involves
applying a mixture of oil and crushed
rock atop the asphalt roadway.
Micro-surfacing prolongs the life of
roadways in our neighborhoods by
protecting the surface from the effects
of natural aging, inclement weather
and the sun.
Micro-surfacing is applied in
dry, moderate- to warm-weather
conditions. The process includes the
use of a large steam-roller truck that
pours the micro-surfacing material
onto the street. Workers then use a
long, squeegee-like tool to spread the
material evenly across the street.
Micro-processing is just one
technique we use to maintain our
streets. Last year we resurfaced 723
blocks citywide; our goal was 600
blocks! So far this fiscal year, 462
blocks have been resurfaced.
San Francisco recently received
the International Slurry Surfacing
Association’s 2016 Excellence in
Pavement Preservation – North
America award. To learn more about
these projects, visit our website.
April 2017 - San Francisco Public Works Newsletter