DD Form 2626, Outstanding Performance Evaluation …

1 union pacific RAILROAD BRIDGE, LONG BEACH, CA. The union pacific Railroad Bridge replaced an existing seven-span steel girder structure erected over the Los Angeles River on 40-foot high cast-in-place concrete piers. The greater span between new piers helped protect Long Beach, CA from flooding and lowered the flood insurance premiums for thousands of residents along the River. This project included the construction of retaining walls, a new steel girder bridge built upon concrete piers, footings and driven pile foundations, demolition of the old railroad bridge, miscellaneous asphalt paving, utility work and concrete slab replacement. Additionally this work was done while maintaining an active flow of water in the River.

2 An ingenious system of diversion and control of water in the River allowed for channel demolition, excavation and foundation construction, followed by the replacement of the existing concrete low flow and channel lining. MZT had to coordinate this work with a multitude of Agencies, (USACE, union pacific Railroad, Port of Long Beach, Port of Los Angeles, Los Angeles County, LA Flood Control, City of Long Beach, etc.), and subcontractors (steel erectors, reinforcing steel placers, fencing, survey, waterproofing, etc.) and maintain an active flow of water in the River and maintain the access of the adjacent bicycle / equestrian path for the residents of the area. Additionally MZT worked in close coordination with an adjacent utility contractor that was boring and jacking a utility under the River at the same time this project was in progress.

3 MZT utilized strict survey control to ensure the critical layout of the foundation / pier construction and closely monitored and coordinated the fabrication and delivery of the structural steel. The structural steel was fabricated in Oregon and MZT made several site visits to monitor and maintain the project schedule. Access to the jobsite was another obstacle to overcome as the girders were in excess of 90 feet in length. MZT had a very short window in which to construct the new bridge and remove the old bridge within the confines of the River prism. No work could begin until April 1st and all work had to be done by October 15th. MZT had to overcome an unexpected rain storm in early April which wiped out the newly placed river diversion system.

4 After construction of the new bridge was nearly complete, the old bridge was found to have lead based paint. MZT moved swiftly to negotiate a Contract Modification and not delay the work. During this time frame MZT. had to divert the flow of the water in the river several times to allow working in a dry environment. MZT closely monitored the progress of this work on a day to day basis, held weekly progress meetings with the Owner and worked overtime and weekends when needed to insure the project was completed on time. This complex, multi-phased project was completed in less than one year. DD Form 2626, Outstanding Performance Evaluation from Owner First class contractor, first class project. Would highly and strongly recommend this contractor for future work.

5 $8,754,783. DACAW09-01-C-0001. January, 2001 January, 2002. US Army Corps of Engineers