Wesslen Construction Inc. has been in business for nearly 40 years serving the Pacific Northwest and Midwestern States including Washington, Idaho, Montana, North Dakota, Oregon, and California. Our office is located in Spokane, Washington. As a company we specialize in: Civil & Marine Projects – including: Excavation – Road Construction and Site Work Bridge Construction: Steel, Wood, Suspension, Cast in Place, Precast Structures Including demo. & rehab of existing bridge structures Marine Construction: Piling, Excavation and Underwater Service Lines Hydro-Electric Dam Work Crane Services including Pile Driving and Highline Work Concrete Structures – Precast and Cast in Place Water Purification and Supply Facilities Remote Access Projects – Repeater Towers, Trail Bridges, Buildings, Fire Lookouts