UPDATED 9/7/11
- Work in progress: Pavement striping and markings, signal loops, speed humps,
shoulder rock, utility adjustments, and other cleanup work.
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Your Street Maintenance Fee Dollars at Work
Here's what you can expect:
On the first day of work on each street, crews will typically repair existing sections of poor
pavement, grind along the curb and transition areas, prepare utility covers, and prepare the
street for paving. On the second day, you will typically see dump trucks and large paving
machines as a couple of inches of new asphalt is placed on the roadway to overlay the existing
pavement. Smaller crews on subsequent days will adjust catch basins and utility lids, and
fine-tune the transition from new pavement to existing ground. A few days later, crews
will reinstall the lines and traffic control markings on the street.
Contact Information
To contact city staff, call the transportation project hot line at 503-718-2760 or Sr. Project Engineer
Mike McCarthy at 503-718-2462 or mikem@tigard-or.gov.
Overview:
The hot, dry weather of summer makes for ideal paving conditions. The city contracts for two types of pavement
maintenance: slurry seal application and pavement overlay.
- In a slurry seal application, a hot, liquid mixture of asphalt emulsion and sand is applied to the roadway. (Think chocolate syrup!) The mixture hardens as it cools and gives new life to the asphalt binder near the pavement’s surface. Slurry seal applications offer the most cost-effective means of keeping residential roadways in good condition.
- Overlays are used on roads with more severe cracks and potholes and on busy streets
where the road surface is subjected to the daily pressure of thousands of vehicles.
An overlay involves the application of a couple inches of new pavement to the existing street.
Overlays restore the structural strength of the roadway.
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Slurry Seal Project is Complete for 2011
All street closures for our slurry seal project have been completed! The year's project totaled about two million square feet of slurry seal,
which covered about 12 miles of Tigard streets, at a total cost of about $265,000. In comparison, the cost to overlay (pave)
this many miles of street would cost over $2 million.
We'd like to offer a big THANK YOU!!! to everyone who helped with this project, and another big THANK YOU !!!
to all the residents and workers who rearranged their schedules to work around the street closures that were
necessary for this project.
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OVERVIEW
Paving and Slurry Seal Projects: Summer 2011
Summer 2011 Projects
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Overlays and Slurry Seals
Pavement treatment examples can be viewed here.
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