Pullman-Albion SR-27 Roundabout

Ardurra delivered transportation planning and design services for Pullman's first roundabout at the SR27 and Albion Drive intersection, addressing critical safety and capacity issues in the rapidly developing north urban growth area (UGA). The intersection upgrade supports continued residential and commercial development while enhancing safety for this vital route, serving as a US-95 alternative connecting Pullman to farming communities.

Working collaboratively with WSDOT, City of Pullman engineers, and private stakeholders, Ardurra advanced the single-lane roundabout solution from initial planning through construction completion. The approach included an intersection control evaluation, geometric design, and construction documentation to support seamless project delivery from concept to opening.

Key Project Achievements:

• Designed Pullman's first roundabout at SR27/Albion Drive intersection, addressing safety and capacity issues through 2040

• Conducted intersection control evaluation (ICE), determining a roundabout solution with speed reduction chicanes for enhanced safety

• Coordinated multi-stakeholder collaboration with WSDOT, City of Pullman engineers, and private development interests

• Prepared a comprehensive PS&E package for fall 2021 bidding with complete geometric, pavement, and drainage engineering

• Supported construction documentation through summer 2022, ensuring quality delivery and regulatory compliance

• Delivered project from planning to completion with public opening in August 2022, serving the rapidly developing UGA

• Enhanced regional connectivity for the US-95 alternative route connecting Pullman to farming communities

The roundabout implementation provides Pullman with enhanced intersection capacity and safety while supporting continued growth in the north UGA. Strategic coordination with multiple stakeholders and engineering design established new standards for intersection improvements, supporting regional transportation and economic development objectives.