The City of Bellingham has completed the Meridian Sewer Improvement Project, wrapping up a significant underground infrastructure upgrade along one of the city's most-traveled north-south corridors. The project replaced aging wastewater main lines along Meridian Street from Orchard Drive north to Van Wyck Road, a stretch that sees heavy traffic from residential neighborhoods, commercial development, and daily commuters connecting the Meridian district to the rest of Bellingham.
What Was Replaced and Why It Mattered
The project centered on aging wastewater infrastructure that had been in the ground long enough to pose real risks. Older sewer mains can crack, sag, or root-intrude over decades of use, raising the risk of sewage overflows that threaten public health and the environment. In Whatcom County, where waterways connect to Lake Whatcom, Bellingham Bay, and other sensitive ecosystems, keeping that infrastructure in good shape is not just a maintenance question, it is an environmental one.
The new sewer lines installed during the project are designed to add capacity to support future growth along the Meridian corridor, which has seen steady commercial and residential development in recent years. Orchard Drive to Van Wyck Road encompasses a stretch that includes big-box retail areas, apartment complexes, and established neighborhoods on Bellingham's north side. Adding capacity now means the system is better positioned to handle additional hookups without risking the kind of overflow events that have triggered regulatory scrutiny for municipalities across Washington State.
The City of Bellingham Public Works department handles the ongoing maintenance and upgrade of the city's water and wastewater infrastructure, overseeing a system that serves tens of thousands of residents across the municipality.
What Comes Next on Meridian Street
The underground work is done, but Meridian Street is not finished changing. The Washington State Department of Transportation has a future project in the works to repave the roadway along the same corridor. Road surfaces disturbed during utility work often need eventual repaving regardless, and WSDOT's planned project would address the full driving surface, bringing smoother conditions to a stretch of road that has accumulated wear over years of heavy use.
No specific timeline for the WSDOT repaving project has been announced publicly yet. Residents and commuters who use Meridian regularly should watch for updates from both the city and WSDOT's regional project page, where construction schedules and lane closure notices are typically posted in advance of work beginning.
The sequencing of sewer replacement before road repaving is intentional and standard practice: it makes no sense to lay fresh asphalt only to tear it up months later for underground utility work. By completing the sewer project first, the city and state are coordinating to minimize the number of times the roadway surface needs to be disrupted.
The Bigger Picture for Bellingham Infrastructure
The Meridian project is one piece of a broader ongoing effort to maintain and modernize Bellingham's aging utility systems. The city's sewer and water infrastructure includes pipes and mains dating back decades, and prioritizing which segments to replace requires balancing failure risk, growth projections, and budget realities.
In recent years Bellingham has tackled several notable infrastructure projects, including the Post Point Wastewater Treatment Plant, where the city in 2026 approved a major contract to upgrade emissions systems. Wastewater infrastructure investment tends to be invisible to most residents right up until something goes wrong, which is precisely why proactive replacement projects like the Meridian upgrade matter.
For those who live or work along Meridian Street between Orchard Drive and Van Wyck Road, the completion of this project means the underground risk has been addressed. The above-ground payoff, in the form of smoother pavement, is still coming. More details on the project are available at cob.org/meridian-sewer, where the city has posted project background and updates. For related infrastructure coverage, the story of the Harris Avenue Shipyard cleanup shows how Bellingham continues to address legacy environmental and infrastructure challenges across the city.
