STV provided design services for the first phase of Tri-County Metropolitan Transportation District of Oregon’s (TriMet) Banfield Type 1 Substation Replacement Project, advancing modernization of the MAX Blue Line’s traction power infrastructure. The work encompasses design completion and Issued for Construction (IFC) approval for six traction power substations along the Banfield corridor. Originally installed in 1983, these substations represent some of the oldest components of the region’s light rail system. This milestone marks a key step in a long-term program to maintain the system in a state of good repair and support reliable MAX service for the Portland metro area.
What challenges is STV addressing?
TriMet’s 12 Type 1 traction power substations along the MAX Blue Line are nearing the end of their service life, increasing the risk of maintenance challenges and service disruptions. Replacing critical power infrastructure while maintaining reliable operations required careful coordination, long-term planning and modernization of systems that have supported the region’s light rail network for more than four decades.
What solutions is STV delivering?
Over an 18-month period, STV led the structural, civil, electrical and systems design for six substations and provided overall project management, leading a multidisciplinary team of eight consultants. The design supports the introduction of state-of-the-art traction power equipment, improved equipment access and enhanced safety. STV also advanced the project to IFC approval, enabling construction readiness.
How will this project benefit the community/region/market?
The project strengthens the reliability and resilience of the MAX Blue Line, TriMet’s longest light rail route, helping reduce the risk of service disruptions and supporting safe, dependable transit for riders across the Portland metro region.
Key stats and accolades
- First phase of a 12-year substation replacement program
- Six traction power substations designed and approved for construction
- MAX Blue Line spans approximately 33 miles
- Serves 48 stations between Hillsboro and Gresham
