Whatcom County Public Works will close a section of Gillies Road beginning Monday, September 21, for bridge repair work that is expected to run through Friday, October 2. The closure affects Bridge 309, located between Alm Road and Lindsay Road, and will be in effect each weekday from 8:00 a.m. to 4:00 p.m. during the two-week project.
Who Is Affected and What to Expect
During the closure hours, no through traffic will be permitted across Bridge 309, and that restriction applies to all vehicles including school buses and emergency vehicles. Residents whose properties sit on either side of the bridge will still be able to reach their homes via local access, but the bridge itself will not be open to crossings during work hours.
Outside of the 8 a.m. to 4 p.m. window each weekday, Gillies Road will reopen fully to through traffic. A signed detour will be in place during closure hours to guide drivers around the work zone. County crews typically post directional signage at the nearest intersections on both ends of a closure so drivers know where to turn before they reach the roadblock.
Families with children who ride school buses along Gillies Road should be aware that bus routing may change during the closure period. Parents are encouraged to check directly with their child's school or the Bellingham or Meridian school district transportation departments to confirm whether pickup or dropoff locations will shift.
Why the Bridge Needs Repair
Whatcom County Public Works says the work at Bridge 309 is intended to maintain the bridge's existing weight restrictions. Bridges in rural Whatcom County carry weight posting requirements that limit the size and tonnage of vehicles that may cross, particularly in spring when saturated soils and frost-thaw cycles weaken the surrounding roadbed and structure.
Routine maintenance work on posted bridges typically includes inspecting and reinforcing the deck, stringers, or abutments, repairing joints and bearings, and addressing any water damage or corrosion that has accumulated since the last maintenance cycle. Without this kind of periodic upkeep, a bridge can deteriorate to the point where weight limits must be reduced further or the structure must be closed entirely, creating far more significant disruptions to rural residents who rely on those crossings for daily travel.
Whatcom County maintains dozens of rural bridge structures across its road network. The county's Public Works Maintenance and Operations division is responsible for scheduling and executing these repairs, often working through a rolling maintenance calendar that prioritizes structures based on inspection ratings and traffic volume. Questions about the Gillies Road project can be directed to Public Works Maintenance and Operations at 360-778-6400.
Timing and Weather Contingencies
County officials note that the work is weather-dependent and the schedule is subject to change. September in Whatcom County typically brings increasing rainfall after the dryer summer months, and construction crews may need to pause or adjust work days if conditions become unsafe or if materials cannot be placed properly in wet conditions.
The September 21 through October 2 window was chosen in part because it falls within the shoulder period between summer and the arrival of sustained autumn rains, giving crews the best chance to complete the work before conditions deteriorate. Drivers should monitor updates from Whatcom County Public Works in case the closure dates shift.
This closure is one of several active road projects in western and rural Whatcom County this fall. A parallel emergency project is underway along Unick Road and Ulrich Road in western Whatcom County, where Public Utility District No. 1 of Whatcom County is replacing a deteriorating water transmission pipeline under an emergency declaration issued August 15. That project is producing its own set of intermittent road restrictions that are updated as work progresses.
Drivers who regularly use Gillies Road are encouraged to plan alternate routes for the weekday morning and afternoon hours affected by the closure. The detour signage will guide drivers to the nearest suitable alternate crossing, though rural detours in this part of the county can add several minutes to travel times depending on the destination.
For up-to-date road closure and restriction information across Whatcom County, residents can sign up for email notifications through the county's Notify Me system at whatcomcounty.us. The county also maintains an extended road restrictions list updated regularly by Public Works staff. For more on how local infrastructure projects are shaping daily life in Whatcom County this fall, earlier reporting on major county construction decisions offers useful background on how the county manages large-scale capital and maintenance work.
