2022 Road Sealant Project – Phase 1

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One of the most important aspects of managing the County’s unincorporated road network condition is continual investment towards pavement preservation treatments.  These types of sealant projects represent relatively low-cost improvements that prolong the effective life of roadways in good to fair condition. This sealant project includes crack sealing, preservation treatments slurry seal or microsurfacing, and striping on approximately 40 centerline miles of roadway across unincorporated areas of Marin County.  It is worth noting that this is one of the largest sealant projects the County has ever undertaken. The preservation treatments selected for this project were based on the current conditions of each road segment, utility coordination and scoping efficient road groupings. This sealant project has two objectives.  The first objective is to apply the pavement preservation treatment at the optimal time to extend the useful life of the roadway.  The second objective is to provide a stopgap measure to improve roads in the ‘poor condition’ category and defer repaving or reconstruction by 3 to 10 years depending on the condition at the time of application, reducing the cost per year of service life.