Related Projects Worldwide

Improving Baton Rouge’s Sewer System with New Wastewater Pump Stations Stanley Consultants designed 16 new replacement pump stations for the City of Baton Rouge to resolve city-wide sewer problems and position the City to realize millions of dollars in fiscal savings through a 25-year planning period. Learn More
Air Force Base Runway Replacement Supports Global War on Terrorism Stanley Consultants was retained by Perini Corporation as the lead design firm and coordinator throughout design, construction and closeout activities of the Andersen Air Force Base in Guam. Learn More
World’s Biggest Chiller Cools Qatar Island Stanley Consultants provided engineering design services for the world’s largest Integrated District Cooling plant, serving the needs of Qatar Island. The plant is also equipped with a desalination plant. Learn More
Water Main Hot Tap Critical to O’Hare Runway Project Stanley Consultants designed an innovative hot tap process resulting in no water service disruptions at O’Hare and savings of $80 million over next best design alternative. Learn More
Emissions Reductions Are Key in Power Plant Design Stanley Consultants served as owner’s engineer for City Utilities of Springfield, Missouri, 300 megawatt power plant, providing preliminary and detailed design of the entire plant which is equipped with state-of-the-art emissions reductions technology. Learn More
Transforming Fire-Damaged Landmark Into Popular Venue Through adaptive reuse, the fire-damaged Credit Island Lodge was reconstructed as an attractive public space. The structure’s historic look was retained, yet its functional value is far greater with public rental higher than before the fire. Learn More

De-Congesting Arizona’s Chino Valley Highway

Since 1992, State Route 89 (SR 89), which runs from Interstate 40 south to US Highway 93, has been an important thoroughfare for travelers in central Arizona.  The Town of Chino Valley sits near the center of this highly traveled road and accommodates over 24,000 vehicles daily – a substantial number for any two-lane road to transport.

The Arizona Department of Transportation (ADOT) evaluated a three-mile section of SR 89 when accidents became more prevalent and complaints of congestion became more frequent.  Chino Valley residents and businesses were concerned because the constant stream of traffic on the single-lane highway made merging and turning hazardous.

Stanley Consultants served as prime design consultant to develop a solution to this congestion and safety problem.  The highway was expanded to two lanes in each direction.  An innovative "inside out" design approach allows for future expansion to three lanes in each direction simply by removing the road's wide internal median.  The roadway features numerous right and left turn lanes, a superior drainage system, and the state's largest roundabout.  The roundabout two-lane configuration is capable of accommodating two semi trucks side-by-side – a first of its kind in Arizona.  The roundabout has also been designed to accommodate an additional third lane for the ultimate configuration.