Bangerter四个互换设计建造
Layton, Utah
Best Project
Owner:Utah Dept. of Transportation, Region 2
Lead Design Firm & Structural, Civil Engineer:Michael Baker International
General Contractor:RLW/Clyde, a Joint Venture (Ralph L. Wadsworth Construction Co. LLC and W.W. Clyde & Co.)
Consultant:H.W. Lochner
Subcontractors:Boulderscape;DDI Inc .);干Creek Structures; Gateway; Geneva Rock Products; Harper Concrete; Mammoth; Ralph Smith; RBI; RC Hunt; Wagstaff Crane; Wheeler Machinery
The Bangerter Highway is a major north-south artery serving Salt Lake County that also provides access to Salt Lake City International Airport. It is called a “partial expressway” because it has several at-grade, signalized intersections, including one that handles nearly 94,000 vehicles daily.
犹他州运输部试图在高速公路贩运最严重的十字路口（7000 South，9000 South，South，11400 South和5400 South）中取出瓶颈，并用等级分离的交易所代替它们。这包括将高速公路提高到三个交叉口的坡度上方，并使第四个以下一级。
The goal was to finish major construction before the next holiday shopping season, a vital concern for venues along the highway.
To minimize disruption on this design-build project, the joint venture contracting team worked with Michael Baker International to create sub-units that allowed concurrent design and development of the interchanges. The on-site colocation of designer, builder and owner helped to ensure that the right decisions were made promptly, keeping the fast-track project on schedule.
One of the key challenges was mitigating excessive vibration, loading and settlement along the right-of-way during construction. The issue came up because a 1970s-era aqueduct owned by the U.S. Bureau of Reclamation and operated by the Jordan Valley Water Conservancy District lacked joint restraints. The aqueduct traverses nearly the entire length of the project, with 78-in. pipe at two of the interchanges and 66-in. pipe at the others. The team developed a plan that coordinated more than 20 permits for encroachment in the easement and permitting to allow for early rough grading.
Crews also installed a custom foundation for sign and signal equipment in the easement along with drainage systems to limit the number of pipes and catch basins.
该团队几乎在整个项目中都在每个方向上保持了三条交通车道，在工作289,758小时后，在2018年11月完成了实质性完成，没有损失的时间。新的互换使高速公路的平均旅行时间减少了近15分钟。
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