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WGI's Structural Engineering Team recently took a "field trip" to the HEFT widening from SR 836 to NW 106th Street project site.
It was an awesome experience for the team to be able to observe all of their design efforts come to life in front of them. One of the team's steel girder designs was actually erected right in front of them during their visit.
Our team had the opportunity to observe the construction of one of our steel girder designs.[/caption]
For the 12th Street bridge site, two bridges will be widened on both sides and one new five-span bridge will be constructed for the NB-CD traffic. The widenings include inverted-T piers, micro-pile foundations, and non-redundant drilled shafts to be built in restricted work zones around SR 836, CSX RR, and 12th Street.
Other bridge sites at 41st Street, 58th Street, and 74th Street include similar widenings with non-redundant drilled shafts.
This project will include the construction of three ramp bridges over Snapper Creek Canal featuring new concrete piles for the bent substructure.
Toll gantries for this project include two new accessible gantries and seven new cantilever non-accessible toll gantries to be built in constrained work zones.
HEFT (Homestead Extension of Florida's Turnpike)
Keegan Larson, Vice President of Transportation Operations led the successful completion of the design of this project in combination with the WPB Roadway Team. WGI completed final design plans and construction specifications for widening the HEFT from south of SR 836 (Dolphin Expressway) to NW 106th Street from six to ten lanes, including the incorporation of express lanes. The project design included roadway, drainage, stormwater management, signing and pavement marking, structures, toll gantries and facilities, ITS, lighting, environmental permitting, landscape architecture, utility coordination, subsurface utility exploration, and survey and mapping. This $249 million construction contract is 75% complete and one year ahead of schedule.
Florida Turnpike Gets New and Improved Bridges
With a huge team effort from the Tampa, Jacksonville, and Ft Lauderdale structure groups, WGI completed the design for 22 bridges (including replacements, widenings, and new structures), permanent retaining walls, and toll gantries within the project limits. The two new flyovers between SR 836 and the new HEFT express lanes are Category 2 structures, including a curved steel plate girder unit and a FIB-78 prestressed beam unit. The substructure comprises a mix of hammerhead, multi-column, and C-piers on pile footings or non-redundant drilled shafts. [caption id="attachment_192348" align="alignnone" width="1024"]
Our team had the opportunity to observe the construction of one of our steel girder designs.[/caption]
For the 12th Street bridge site, two bridges will be widened on both sides and one new five-span bridge will be constructed for the NB-CD traffic. The widenings include inverted-T piers, micro-pile foundations, and non-redundant drilled shafts to be built in restricted work zones around SR 836, CSX RR, and 12th Street.
Other bridge sites at 41st Street, 58th Street, and 74th Street include similar widenings with non-redundant drilled shafts.
This project will include the construction of three ramp bridges over Snapper Creek Canal featuring new concrete piles for the bent substructure.
Toll gantries for this project include two new accessible gantries and seven new cantilever non-accessible toll gantries to be built in constrained work zones.