Street Paving in Tigard: Summer 2013
The hot, dry weather of summer makes for ideal paving conditions. The city contracts for three types of pavement
maintenance: slurry seal application, pavement overlay, and crack sealing.
- 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 replaces teh deteriorated
asphalt binder near the pavementís 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.
- Crack sealing is done to keep water from seeping into pavement cracks and causing
further asphalt deterioration. It is typically done on streets to be slurry sealed,
and on major streets on which cracking has developed but the pavement has not deteriorated
to a level that necessitates an overlay. Crack sealing was completed this spring on
about 15 miles of Tigard streets.
|Paving Overlay Schedule
On each street, the first day or two will be pavement grinding and repair, followed by
pavement overlay on the third and fourth days. Striping will be installed about a
week later. Streets may be closed to through traffic during paving, or significant delays may occur
as traffic is narrowed to one
lane (with flaggers) during paving work. Drivers are advised to use alternate routes.
Affected residents and businesses will receive mailed letters and schedules, notices on
their doors, and will see signs on the streets.
Click here to see
the 2013 paving map. Paving will be done in July/August; watch this website in late June for specific
|Street to be Paved:
||98th to Hall
||Durham to Sattler
||Oak Tree Ln to Sattler
||Greenburg to 90th
||Murdock to McDonald
||Hampton to Dartmouth
|87th Ave/Center St
||Greenburg to Pacific Hwy 99W
||McDonald to Edgewood (east end)
||Pacific Hwy 99W to Pine
||69th to 71st
||Pine to Oak
||72nd to 71st
|Slurry Seal Details|
In a slurry seal application, a liquid mixture of thick oil, sand, and other strengthening additives
is applied to the street. This mixture hardens as it cools and counters the effects of
weathering by replacing the asphalt binder near the pavement's surface. |
Slurry seal will be applied on the streets in much of central Tigard in July and August, 2013.
Click here to see
the 2013 paving/slurry seal map.
Areas include streets north of Bull Mountain Rd. and McDonald St., East of 130th Ave,
and south of Summer and Fanno Creeks. This will involve short-term street closures while the
slurry dries. Residents will be notified in advance of street closure dates and locations.
Crews close the street in the morning when the slurry is applied. The street remains closed
for four to six hours until the slurry dries. It is imperative that all vehicles, people,
and pets are kept off the wet slurry. It takes a few weeks for the slurry to fully cure,
and the street will be a bit sandy during this curing time.
Affected residents will receive mailed letters and schedules, notices on their doors, and will
see signs on the streets.
Slurry seals will be done in July/August; specific dates for each street will be posted
on this website in late June.
More frequently asked questions answered here...
Overlays and Slurry Seals|
examples can be viewed here.
To contact city staff, call the transportation project hot line at 503-718-2760 or contact Sr. Project Engineer
Mike McCarthy at 503-718-2462 or email@example.com.