July 15, 2024 Donate

Chelsea, Dexter, Milan, Saline

2024 County-wide Seal Coat Program

The Washtenaw County Road Commission (WCRC) is announcing plans to invest $1.5 million to protect approximately 30 lane miles of pavement throughout Washtenaw County during the 2024 construction season with seal coat operations. The 2024 County-wide Seal Coat program is funded through the current Four-year County-wide Roads and Non-Motorized Millage and the Michigan Transportation Fund (MTF).

WCRC’s annual seal coat program is a strategy to protect paved roads from the wear and tear of vehicles, sun damage, and Michigan’s freeze/thaw cycles which produce cracks and lead to potholes. WCRC applies seal coat to paved roads that are in good or fair condition. “Seal coat isn’t just a protective layer for roads; it’s an investment in longevity. By safeguarding against deterioration, it saves from the hefty costs of frequent repairs and reconstructions. In essence, seal coat pays dividends in the form of extending the service life of roads in Washtenaw County,” said Kenneth Harris, Washtenaw County Road Commission, Superintendent of Maintenance.

Seal coat is made up of two parts, chip seal and fog seal. During chip seal, a thin layer of liquid asphalt is applied onto the road surface, followed immediately by the placement of small aggregate (stones). The stones are embedded into the liquid asphalt with rollers and any excess stones are swept off the roadway. A few weeks later, crews will return to place fog seal. During fog seal, another thin layer of liquid asphalt is applied to the chip sealed surface. This process helps seal the stones onto the road surface. Later, permanent pavement markings will be placed on the sealed surface.

Seal coat operations will begin Tuesday, June 4, 2024, pending weather conditions. Listed below are the project locations, traffic impacts, and the tentative construction schedule:

Township Location  Traffic Impact  Timeline (Chip Seal) Timeline (Fog Seal)
Ann Arbor Dixboro Rd between Geddes Rd and Plymouth Rd Lane restrictions June 13 June 27
Ann Arbor, Pittsfield & Ypsilanti Clark Rd between Hogback Rd and Huron River Dr Lane restrictions June 12 June 27
Dexter Dexter-Pinckney Rd between Island Lake Rd and the County line Lane restrictions June 17 July 1
Pittsfield Platt Rd between Bemis Rd and US-12 Lane restrictions June 10 June 25
Manchester & Sharon Sharon Hollow Rd between Austin Rd and Pleasant Lake Rd Lane restrictions June 4 June 19
Sharon Pleasant Lake Rd between Sharon Hollow Rd and M-52 Lane restrictions June 5 June 20
Sharon Sharon Valley Rd between Sharon Hollow Rd and the County line Lane restrictions June 4 June 19
York Moon Rd between Willis Rd and Saline-Milan Rd Lane restrictions June 6 June 24
York Mooreville Rd between Stony Creek Rd and Saline-Milan Rd Lane restrictions June 6 June 24
York Dennison Rd, 500 Ft south of Mooreville Rd Lane restrictions June 6 June 24
York Platt Rd between the City of Milan and Willow Rd Lane restrictions June 6 June 24
Ypsilanti Tuttle Hill Rd between Martz Rd and Huron River Dr Lane restrictions June 11 June 26
Ypsilanti Waird Rd between I-94 and US-12 Lane restrictions June 12 June 26

Seal coat roads are safe to drive on, but it is important that motorists follow the posted advisory speed – 35 mph, to avoid vehicle damage from both the liquid asphalt and any loose stones.

The liquid used for the fog seal may take up to a couple of hours to cure after application, so it is very important for vehicles to stay off the road during this time to prevent damage to the road and vehicles.

WCRC crews will be onsite directing traffic with flaggers, pilot vehicles and/or other safety signage. It is critical for motorists to follow all instructions provided in the work zone during a seal coat application to keep everyone safe and avoid vehicle damage.

Have questions about the program? Reach out to Kenneth Harris, Superintendent of Maintenance, at (734) 327-6696, or via email at harrisk@wcroads.org.

Pictured is a map of the 2024 County-wide Seal Coat Program.