News & Press Releases

Tuesday, June 07, 2016
ACHD begins chip sealing this week

Boise – Select streets in Boise will receive chip seal treatments starting this week.

In certain areas, "No Parking" signs will be placed on the sidewalks next to the street 24-to-48 hours in advance of the work beginning. Once the procedure begins, motorists are prohibited from parking on the street. Vehicles remaining on the street will be moved to a nearby street unaffected by the maintenance. Residents and businesses will receive notices 5-10 days before the actual work begins. This notice will inform them of the intended time frame for work to begin (though all work is weather dependent). 

Motorists should take care when driving through a chip seal zone. It is very important to respect and adhere to posted speed limits and other instructions to help prevent oil and chips from damaging vehicles. 

The Highway District has divided the county into six chip seal zones with one area receiving work annually. The process begins in early spring when ACHD crews begin to prep future chip seal roads by sweeping them, crack sealing them, and cleaning the roads of debris. Trees are also pruned to help aid chip seal equipment navigate the roadways. Next is the actual chip seal application. An asphalt distributor truck shoots each lane with liquid asphalt. This is immediately followed by a chip spreader applying chips/rocks. Next, a rubber-tire roller sets the chips/rocks into the fresh oil. This orients the rock to produce a tighter chip seal.

Once the asphalt has fully set (5-10 days later), a sweeper truck will remove the excess rocks. The final step, the fog seal, is a second application of oil that controls loose rocks and dust and provides a fresh surface for pavement markings The road is safe for motorists to drive on approximately 15 minutes after the initial chip seal or fog seal has been placed.

This year, the Ada County Highway District will chip seal and fog seal more than 450 lane miles of roadway. Chip sealing helps extend the life of the road by helping to seal and protect it from weather and wear. 

Chip seal season will be complete by the first of September.

Visit this link to view a map of the 2016, Zone 5, Chip seal Area map.

Or this week's projected area: Weekly Chip Seal Updates.



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