Email

Related Projects Worldwide

HOV Bridges Hurdle Obstacles – Including Their Own Substructure A one-of-a-kind bridge design turned this HOV project into a showcase of engineering innovation and ingenuity. Learn More
I-80 Widening Provides Motorists a Safer Route to the City Stanley Consultants provided landscaping, signage, pavement marking, sewer work and noise barrier installation for this I-80 widening project. Safety was increased and traffic congestion was reduced as a result of this project. Learn More
Planning for a Safer Circle Interchange Stanley Consultants prepared a master plan study for safety related and aesthetic improvements on the aging Circle Interchange. Learn More
Red Mountain Milestone – Power to University Segment Completes Loop 202 Completion of the 4.8-mile segment of Red Mountain Freeway, deemed "The Golden Spike of our Regional Freeway System," provides the critical link that completes a Phoenix freeway loop 20 years in the making. Learn More
I-15 Expansion Designed to Alleviate Headache and Traffic Congestion An aerial view of Utah’s Interstate 15 shows the spacious, multi-lane roadway. Learn More
Golden Gate Parkway is County’s First Single Point Interchange Stanley Consultants’ services were retained to provide design for the upgrade of the Golden Gate Parkway from a four-lane roadway to a six-lane urban divided roadway. Learn More
Fast-track Design of I-70 Reconstruction Interstate 70 out of Chicago had outlived its original design. Reconstruction was necessary to bring the highway up to current design standards, with improved safety features and a reduction in maintenance costs. Learn More
Crucial Interchange Completes Connection This multi-level directional urban traffic interchange alleviates congestion, reduces commute time, and provides access to the southern portion of the valley. Learn More

Award Winning Project

 

 
ACEC
National Recognition Award

ACEC-Idaho
1st Place

Idaho Transportation Department
and Connecting Idaho Partners
Outstanding Performance Award

Idaho Transportation Department
Excellence in Transportation Award

ASCE-Southern Idaho
Outstanding Civil Engineering
Achievement Award

AASHTO
Presidents Award
for Transportation

Women in Transportation
Treasure Valley Chapter
Innovative Transportation
Solutions Award 

Idaho’s First SPUI – I-84 Vista Interchange

Stanley Consultants was hired to design a new interchange on Interstate 84 to alleviate traffic flow problems and increase safety.

Innovation in the form of Idaho's first Single Point Urban Interchange (SPUI) has come to Boise at the I-84 Vista Avenue interchange.  Pronounced "Spooey," the Single-Point Urban Interchange is a relatively new variant of the diamond interchange. 

Interstate 84 is the backbone of the Treasure Valley's transportation system.  It serves as a vital freight corridor, being the primary connection between the Pacific Northwest and the Intermountain West.  The Vista Avenue Interchange on I-84 is an important gateway to Boise, and is a major point of access between the Boise airport, the city of Boise and the region.  Built in 1969, the existing interchange was unable to efficiently handle the current volume of traffic and the structure interfered with the needed widening of I-84.    

Reconstruction of the interchange is the centerpiece of the state's GARVEE Transportation Program. It is one of eight projects throughout the state designed to create jobs, stimulate economic activity, improve motorist safety and reduce congestion. Preliminary and final design was completed in just 9 months. 

The project encompasses the following transportation benefits:

  • Compact layout required minimal right-of-way acquisition
  • A single traffic light reduces delays and allows concurrent left turns
  • Widening adds dual left turn lanes and dedicated right turn lanes
  • Wider and longer on and off ramps to I-84 enhance safety
  • Sidewalks and bicycle lanes
Top