Month: September 2011

Contract Type: Design-Build
Contract Amount: $54.4 million
Location: Indian River County, Florida
Client: FDOT District Four
Design Partner: Stantec

The project includes the addition of one lane in each direction of I-95 throughout the project corridor, milling and resurfacing of the existing mainline lanes, reconstruction of the SR 60 interchange, replacement of the mainline bridges at 90^th Avenue, 4^th Street and SR 60, construction of sound walls and ITS modifications. The de Moya Design-Build Team provided the best value and received the highest technical score on this $54.4 million project.

Project Features:

The de Moya Design-Build team produced several innovative solutions including;

• Master Plan alignments for 4th Street/ 90th Avenue affording Indian River County to build the future corridor expansions at a reasonable cost. The realignment at 90th Avenue allows for the reduction of the bridge length and the skew presented in the RFP Concept Plans.
• Modified mainline median widths through the reconstruction segments of the mainline at 4th Street, 90th Avenue and SR 60 to reduce/ eliminate throw-away work. The modified alignment simplified construction and Maintenance of Traffic (MOT).
• Re-designed ramps at SR 60 to facilitate construction and reduce MOT phases, embankment, walls, and construction duration without requiring any ramp closures.
• Developed cross slope correction algorithmic program with Geopak that optimized use of overbuild and readily identified trouble areas along the travel lanes and shoulders.
• The de Moya Team was able to cut the proposed contract time nearly in half, reducing the project duration from 1,600 days to 850 days.

Contract Type: Conventional Bid
Contract Amount: $71 million
Location: Miami-Dade County, Florida
Client: FDOT District Six
Completed: 2007

This $71 million project included the construction of the SR 826 Interchanges at NW 74th Street and at US 27 in Miami-Dade County.  The project provided 11 bridges including four structural steel bridges, five pre-stressed concrete girder bridges and two cast-in-place concrete bridges.  The de Moya Group submitted six Value Engineering Change Proposals that were approved by the FDOT and provided substantial project savings.

Project Features:

• Extensive erosion control and environmental protections for the canal crossings and the adjacent canal for the entire construction duration.
• Major construction activities included bridge work, pile and bulkhead construction, embankment, paving, lighting, signalization, and signing.
• The de Moya Group’s project personnel were extremely proficient in resolving constructability, right-of-way, and utility conflicts throughout the duration of the work.

Contract Type: Conventianal Bid
Contract Amount: $28 million
Location: Palm Beach County, Florida
Client: FDOT District Four
Completed: 2001 

The project provided for the reconstruction of the I-95/ Okeechobee Boulevard interchange from south of Australian Boulevard to Congress Avenue and replaced the outdated and dysfunctional existing clover-leaf interchange design with a new double curved box girder flyover bridge (approximately 900 LF).

Work also included providing a new eight-laned concrete girder bridge over I-95, reconstruction of all on and off ramps, new signalized intersections on Okeechobee Boulevard both east and west of I-95 at the on/ off-ramp terminals which included triple left turn movements, the addition of auxiliary and general purpose lanes on I-95 in each direction with two-lane on/ off ramps, and milling and resurfacing of existing I-95.  

Project Features:

• Ramp bridge on a sharp 490-foot radius curve carrying traffic from westbound Okeechobee Boulevard over I-95 and Okeechobee Boulevard to southbound I-95.
• Removal of existing loop ramps in the northeast, northwest and southwest quadrants and reconstructing the loop ramp in the southeast quadrant.
• Substructure consisting of end bents and hammerhead single column piers on pre-stressed concrete piling.
• Sound walls, decorative MSE walls, decorative precast gravity walls, jack and bores, and extensive landscaping.
• Complex MOT schemes were required to ensure traffic was afforded access to Okeechobee Boulevard and I-95 throughout the 18-month accelerated construction schedule.
• dMG Value Engineering concept to provide full superstructure replacement in lieu of hydrodemolition  and bridge jacking.