Ada County Highway District

2018 Cul-de-sac Project

Construction update as of 8/31/18: This project reached substantial completion as of July 26th.

General Description:
This spring, the Ada County Highway District will begin the preventative maintenance treatment of several cul-de-sacs in Maintenance Zone 6 in Ada County. The treatment, called a slurry seal, is very similar to the chip sealing process, which coats the road with a protective sealant and helps prolong the life of the road. Regular chip sealing equipment cannot fit into tight areas such as cul-de-sacs. The slurry seal treatment was designed specifically for the confines and tight turns of a cul-de-sac. Not every cul-de-sac in Maintenance Zone 6 will be treated. 

Residents can expect treatment of their cul-de-sac to commence within 24 hours of receiving a door knocker on their front door. All work is weather permitting. 

Time Frame


Start Date:
April 2018
End Date:
August 2018

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