Clarkson Construction Company was the joint venture sponsor for Paseo Corridor Constructors (PCC) on this $232 million design-build project that included the replacement of the existing Paseo Bridge over the Missouri River with an iconic cable-stayed bridge and reconstruction and widening of four and a half miles of the I-35/I-29 corridor from downtown Kansas City to north of the Armour Road/Route 210 interchange.
Innovative Approach: HNTB Corporation assisted The Missouri Department of Transportation (MoDOT) with an innovative approach to design-build. Since the MoDOT design-build process was new, many advanced techniques were used in all aspects of the project. Alternate design standards, inventive delivery methods, resourceful QA/QC process are all examples of how HNTB provided value to the project. PCC submitted and received approval on 15 Additional Applicable Standards, 17 Design Exceptions and 44 Equal or Better Change proposals throughout the project. These proposals showed our team’s approach to improve constructability, reduce cost and improve the completion schedule.
Innovative Traffic Handling Plans: PCC was able to keep traffic moving throughout the corridor throughout the duration of the project. The construction of a major river crossing as well as multiple overpasses and viaducts were completed while keeping the Interstates 29/35 open and minimized the impact to the 105,000 vehicles per day.
Schedule: PCC was able to utilize their construction traffic experience and modify/combine phases of work to complete the opening of the new River Bridge six months ahead of schedule and receive a $2,000,000 incentive.
Constrained Corridor: The design and construction of this corridor was highly constrained. The entire corridor is in an urban area, with businesses, residential property, and railroads throughout. Many efforts were taken to provide a minimal corridor footprint, while maximizing the project potential. Cost vs. property analysis was done in each location to ensure that the correct decision was made.
Hazardous Waste Site: HNTB developed mitigation plans and processes for the two hazardous waste sites on the project. Both were located in the rail yards and involved mobilizing specialized equipment to excavate, and replace soil containing hazardous material. Throughout the project PCC had to identify, test and incorporate different types of contaminated soils in various locations.
Working with Regulatory Agencies: Close coordination was required between MoDOT and HNTB with the (Federal Aviation Administration (FAA), the Federal Highway Administration (FHWA), the US Army Corps of Engineers, as well as numerous municipalities. HNTB provided assistance coordinating with each, and were able to come up with creative solutions to issues with each agency.
Challenges/Resolutions: One of the major challenges was identifying the concerns and approvals of multiple stakeholders (2-levee districts, Corps of Engineers, US Coast Guard, 6 Railroads, 2 – Cities, Paseo Industrial District). PCC engaged these groups early on in the project through task force groups and committees to understand concerns and resolve issues. Many other state DOTs visited the kcICON project to view the success of Missouri’s first design-build and seek input for their own projects.