Public Works Projects

SOUTH 180TH GRADE SEPARATION

This large and complex project involves the construction of approximately 1,120 linear feet of street improvements on South 180th (SW 43rd) street to separate the roadway with the existing railroads. The project consists of an underpass beneath the railroads, four lanes of traffic with a center turn lane, an Interurban Trail bridge, a one-track UPRR bridge, and a three-track BNSF bridge. This project will run 490 calendar days.

ORA is under contract to provide all necessary materials testing and special inspection services in support of this project to include deep soils cement (CDSM), reinforced concrete, reinforced masonry, shotcrete, structural steel fabrication and erection inspection, and asphalt and soils compaction testing.

NORTH CREEK STORAGE FACILITY

The project involves construction of a 6 million gallon underground reinforced concrete wastewater storage facility. Following construction, a community sports field will be built on the project site. The excavation will be larger than a football field and about 40 feet deep. It will be constructed in phases using sheetpile shoring walls that are internally braced. ORA is under contract with King County's construction management to provide all required special inspections and materials testing services in support of this large and complex project. Inspections to be performed by ORA include: soils and asphalt compaction testing, reinforced concrete testing and inspection, reinforced masonry testing and inspection, and structural steel fabrication and erection inspection.

HENRY FORD GRADE SEPARATION

The Henry Ford Avenue Grade Separation project calls for construction of a mile-long, two-track railroad bridge over Dominguez Channel and freeway ramps, replacement of a single-track railroad bridge, widening of the Henry Ford Avenue vehicle bridge over the channel to six lanes from four lanes, and the widening of the Henry Ford Avenue on-ramps and off-ramps at the Terminal Island Freeway (State Route 47) to three lanes from two.

ORA was engaged to perform all overseas structural steel fabrication at eight facilities, including weld procedure qualifications, welders qualifications, fit-up, dimensional, preheating and 100% visual welding inspection, nondestructive testing (ultrasonic examination, magnetic particle examination, and penetrant testing), shop installed high strength bolting; paint and coating inspection, and other client required services. Structural steel was fabricated overseas by Samsung Heavy Industries at their Koje Shipyard Facility located in South Korea. Because of the quantity and QC control requirements, seven subcontract fabricators were also performing fabrications, all located in Korea.

CEDAR RIVER WATER TREATMENT FACILITY

Renton, Washington

Owner: Seattle Public Utilities

Project Cost: $40 million

Voted as the 2002 Washington State top 7th public project by the Daily Journal of Commerce, the new facility will feature a state-of-the-art ozonation and ultraviolet (U.V.) light process to disinfect Cedar River water, which supplies 70 percent of the drinking water to Seattle and suburban water utilities. The addition of this technology to the facility’s original capacity of 180 million gallons a day will make it the largest UV water treatment facility in the world.

The project includes a new intake structure and pump station, ozone injection and contact facilities, a UV disinfection facility, and two pre-stressed concrete clearwells to store up to 20 million gallons of potable water. The total cost to design-build-operate the facility for 25 years is $109 million of which $40 million is the estimated construction cost.

Otto Rosenau & Associates, Inc. was engaged to provide complete special inspection and materials testing services to include:

• Quality Control Audit

• Epoxy Grouting

• Grout Testing

• Non-shrink Grout Placing

• Reinforced Concrete

• Reinforced Masonry

• Seismic Cable Sets Installation

• Shotcrete

• Prestressing of Vertical Threadbars and Circumferential Strands

• Nondestructive Testing

• Reinforcing Steel, Prestressed Threadbars and Strands Placing

• Anchor Bolts Installation in Concrete

• Structural Steel

• Soil Compaction

• Bolts, Threaded Rod Anchors, and Rebar Dowel Installation into Concrete