Archive for category: Governmental Agencies (Page 8)

Surprise – Friendship Bridge Deck Joint Replacement

Surprise, Arizona – DBA was the successful bidder on the project which included all of the traffic control, public notifications, bridge deck joint demolition and reconstruction, and spall repairs along the existing bridge deck and restriping.

DBA worked closely with the City of Surprise and the lead designer (Carter-Burgess now Jacobs) during the scoping phase of the project in order to decrease the project schedule from four weeks to a working timeframe of two weekends.  This schedule compression was a win-win situation for all parties involved as it decreased traffic control impacts to the traveling public and also condensed the traffic control requirements.

DBA’s work scope included obtaining all necessary permits and clearances, managing and scheduling subcontractor trades (traffic control and striping), and acquiring and scheduling all material deliveries over a fast-track turnaround schedule.

As the project progressed, DBA worked with the City and the lead designers to add a bridge deck seal in the form of a 3-part methacrylate application to give the bridge deck a longer life and protect against future rebar corrosion.  In order to complete this added scope, DBA was able to reduce the schedule for other work items through improved productivity rates and phasing so that the original schedule was not impacted.  The work was performed over two weekends with round-the-clock shifts and high early strength concrete so the bridge would be open for the Monday morning commute.  Over each weekend, DBA was able to remove and replace 144 LF of bridge deck joint, as well as the extensions up into the adjacent concrete barriers.

Private Development – One East Camelback Storm Drain Improvements

Phoenix, Arizona – DBA’s scope of work included:

• Concrete and asphalt sawcutting and removals
• Valley gutter removals
• Installation of 12” ductile iron pipe for drainage
• Replacement of both the concrete paving and the asphalt paving
• Curb replacement
• Striping

The contract was awarded in September, but the City required all construction to be halted between early November through New Year’s Day to accommodate holiday shoppers and the accompanying added traffic.  Most of the underground work was completed during evening and weekend hours so that traffic could be opened up for daily commuters on Monday morning.

Extensive potholing was executed prior to beginning the work which revealed multiple utilities within the footprint of the project including existing water, sewer, high pressure gas and communications.  Some utility relocations were required.  It was also discovered that several pipes had been installed with the building’s infrastructure but had not been connected to the nearest manhole.  This was also accomplished during construction.

ADOT – Cattle Guard Replacements

Arizona Department of Transportation, Globe District – The project included:

• Removal & replacement of existing cattle guards
• Excavation
• Recompaction
• Concrete foundation placement
• Placement of grilles
• Fence frame supports
• Fence wires
• Temporary detours
• Traffic control
• Landscaping replacement where necessary.

Some of the work was done on Indian Reservation land and, as a result, required strict attention to cultural resources.

Cattle guards were located along US-60, SR-260, SR-77, US-180, SR-177, and SR-188.  A total of 72 cattle guards were included in the contract.  Several ADOT Maintenance Districts were responsible for the projects including Globe, Roosevelt, Show Low and Springerville.

All of the cattle guards are located within State or National Forest land and, therefore, subject to unique environmental standards associated with construction in forested areas.  This required equipment to be washed at the construction yard prior to entering the work site and inspected prior to exiting the work site in order to prevent invasive species seeds from being transported outside.