Bridgefarmer was the Prime Consultant for the extension of Memorial Drive on new location. It included a grade separation beneath the existing BNSF railroad between cut type retaining walls, a new intersection at Town & Country Boulevard and realignment of the boulevard.
The project was completed in 3 phases:
Phase 1 - Drainage and utility relocations
Phase 2 - Construction of the railroad shoofly and the new railroad bridge
over Memorial Drive
Phase 3 - Roadway, drainage, retaining wall design, and landscaping
During the design process, Bridgefarmer worked closely with BNSF to
design in accordance with the railroad requirements. The railroad
agreement was expedited through careful design of at-grade shoofly, and
the clearly defined location and specifications for temporary shoring to
minimize impact upon railroad traffic. Top-down construction did not impact
railroad or highway traffic which lead to substantial cost savings since
railroad operations were not hindered. Retaining walls were designed for
top-down construction, resisting the lateral pressure from potential expansion
of over consolidated Eagle Ford shaley clays. A pump station was required, so Bridgefarmer designed one with the power to pump flow from Memorial Drive at the railroad to a gravity storm sewer system.
Throughout all phases of construction, Bridgefarmer served the City of The Colony by leading pre-bid meetings and construction progress meetings, reviewing pay applications, preparing amendments, reviewing submittals and shop drawings, and answering RFIs. During construction of the railroad bridge, Bridgefarmer had an inspector on-site to ensure construction compliance. While the bridge and subsequent roadway was under construction, our engineers went through the required railroad safety orientation and certification for personnel working on the site. Bridgefarmer also prepared documents for the City to use in permitting for railroad utility crossings.
Since the project involved two cities (The Colony and Frisco), BNSF railroad, and others, our efforts to work closely with all parties helped keep the project moving forward.