Whatcom County Public Works has scheduled chip seal paving on eight roads beginning Monday, July 27, with work expected to continue through Thursday, July 30. Drivers on the affected routes should expect delays between 6 a.m. and 6 p.m. each day and are encouraged to use alternate routes whenever possible. The work is weather-dependent, meaning the schedule could shift if conditions are unfavorable, so drivers are advised to check the county's online resources before heading out.
Which Roads Are Affected
The following roads are scheduled for chip seal treatment during the week of July 27, weather permitting:
Garrison Road (north of SR-9), Lindsay Road (west of SR-9), Nooksack Road, Northwood Road (south of Lynden city limits), Slotemaker Road, Stickney Island Road, Timon Road, and Trapline Road (south of SR-546).
Several of these roads run through the rural agricultural areas north and east of Bellingham, in communities including Lynden, Nooksack, and the Sumas Prairie. These corridors carry a mix of farm equipment, commuter traffic, and commercial vehicles serving the agricultural operations that define much of northern Whatcom County's economy. Drivers who regularly use these roads for farm access, deliveries, or commuting between communities should plan for meaningful delays during the treatment windows and identify alternate routes before the work week begins.
The geographic spread of the eight roads reflects the scale of Whatcom County's rural road network. Trapline Road runs south of SR-546 in the eastern part of the county near the Sumas area, while Northwood Road sits just south of Lynden city limits and Garrison and Lindsay Roads are both oriented relative to SR-9, one of the primary north-south arterials in the county. Stickney Island Road and Timon Road serve more localized residential and agricultural traffic patterns. Taken together, the week's work touches a wide swath of the county's rural corridor.
Property owners and anyone who regularly parks along any of the listed roads are asked to move vehicles out of the public right-of-way before 6 a.m. on each scheduled chip seal day. Vehicles left in the right-of-way can interfere with paving operations and may be damaged by equipment or by loose aggregate kicked up during the application process.
What Is Chip Sealing and Why Does It Matter
Chip sealing is a cost-effective road preservation technique that extends the life of existing pavement without the expense of full repaving. The process involves spraying a layer of liquid asphalt binder onto the road surface, then covering it with small crushed rock chips that are pressed into the binder by a roller. The result is a new surface layer that seals cracks, restores skid resistance, and protects the underlying pavement from water intrusion and freeze-thaw damage.
The cost advantage of chip sealing over full pavement replacement is substantial. A chip seal treatment typically costs a fraction of a full overlay or reconstruction project, making it an attractive tool for county road departments managing large networks with limited budgets. Properly timed chip sealing can add years or even decades to the functional life of a road surface, which means delaying the need for far more expensive reconstruction work. For a county like Whatcom, which maintains hundreds of miles of rural roads serving agricultural and residential users, the annual chip seal program is a core component of the overall asset management strategy.
Because the chips are not yet fully bound when the work is first completed, loose gravel will be present on the roadway during and immediately after chip sealing. Whatcom County Public Works specifically warns drivers to slow down and leave significantly more space between their vehicle and the vehicle ahead. Flying rocks are a real hazard, particularly for windshields, and vehicles traveling at normal highway speeds through a freshly treated section can launch aggregate with enough force to crack glass and cause other damage. Slowing down is not just a courtesy to the work crew but a genuine safety measure for everyone on the road.
Bicyclists and motorcyclists face the greatest risk from fresh chip seal and should use extra caution or choose alternate routes entirely until sweeping crews have cleared the loose gravel. County crews typically return the following week or weeks to sweep remaining loose material and repaint lane lines. Until sweeping is complete, loose rock may accumulate in the path of two-wheeled vehicles, creating slippery conditions especially on curves or in wet weather. For cyclists training on rural county roads, which is common in Whatcom County given its popularity for cycling, it is worth checking the chip seal schedule before setting out on any of the listed corridors.
How to Track Changes and Stay Informed
This round of chip sealing is part of Whatcom County's annual chip seal program, which began July 6 and has been working its way across the county road network over successive weeks. The program covers a large number of roads each summer and is broken into weekly segments, with a new list of roads published each week as crews advance through the schedule. The previous week's work, covering a different set of roads, was announced July 15.
The phased approach allows crews to concentrate equipment and materials on a defined geographic area before moving to the next zone, which improves efficiency and reduces the logistical complexity of managing a program that touches dozens of roads across a large county. It also gives the public a predictable structure: each week, a new list is published, and drivers can check in advance which roads will be affected during the upcoming work period.
All roads scheduled for chip seal are listed on the County Travel Planner, which is updated regularly and accessible online. An updated road list is also published weekly on the County's Road Closures and Restrictions webpage. Because the work is weather-dependent, schedules can shift; drivers are advised to check the planner before heading out on any of the listed roads during the work week. A rainy or overcast day can delay or cancel chip seal operations, since the liquid asphalt binder requires dry conditions to bond properly with the aggregate.
Anyone with questions about the chip seal program can contact the Whatcom County Public Works Maintenance and Operations Division at 360-778-6400. The division handles all county road maintenance scheduling, including responding to questions about specific road sections or timing. For related road and transportation news in Whatcom County, see earlier coverage of I-5 closures and detour routes near Bellingham.
