Trilogy Crossing Corp. The Company

In the spring of 2017, construction started on the replacement of a “bridge” consisting of several beams that were not secured to another to maintain access to the River Water Pumphouse near Taylor B.C.. This structure was not built to any known standards or codes and not classified as a bridge to a professional, therefore it could not be given a load rating. The replacement bridge (12.192m or 40ft.) was manufactured as a low-profile one-piece structure to save on road height approach due to tight site constraints. The old sets of beams were removed, the substructure was re-set by compaction and placement of a spread mat foundation followed. This bridge was replaced quickly by transporting the completed bridge to site and lowering it in place where the old one was, leaving only a small amount of fill to be used for the bridge approaches due to its shallow beam depths. The project was completed successfully within a couple days and all construction documentation was recorded by Trilogy Crossing Corp.

Construction started on a new bridge to be installed crossing Mink Creek near Slave Lake in northern Alberta in December of 2017. Trilogy Crossing Corp. created a plan and proposed bridge lengths and water clearances to develop a structure that was suitable for the new site. The new bridge is a 30.48m (100ft.) twin steel beam with timber modular deck structure, allowing the bridge to arrive in several pieces before final assembly on-site. Four piles were driven to refusal with a cap beam on each abutment and the bridge was set according to the plan prepared by Trilogy Crossing Corp. A post-construction assessment was completed once the bridge was in place and all methods were verified and documented for future reference.

In December of 2017 access was required to the other side of a large sized river for winter logging activities. Trilogy Crossing Corp. did a survey to create a bridge plan and determine the smallest bridge length required to span the frozen creek without impacting the water/ice. The solution was a set of 3 temporary spans (30.48m, 30.48m, 15.24m or in imperial 100ft., 100ft., and 50ft.) with each pier set on gravel bars in the river. One of the piers consisted of an arrangement of lock-blocks interlocked with one another set on mats below to distribute the heavy weight of logging trucks, and another consisted of a pre-assembled steel pier cap that could be lifted into position as once piece. These piers effectively took loaded logging truck loads from the bridge and distributed them into the ground around the ice. The bridge was successfully used for the duration of frozen conditions and disassembled before spring without impacting the creek.

During the summer of 2018, a client required the replacement of an 18.288m (60ft) bridge in poor condition. The bridge ballast walls were in very poor condition, letting fill through that would start to affect the stream quality if left unattended. A new 30.48m (100ft) bridge was installed in the same location to have adequate rock armoured embankment slopes to the creek and also to maintain the existing road alignment. The bridge was designed to withstand heavy loads (L100) that are required to access the area on the other side of the creek. Upon final completion, an as-built survey was completed to verify all components were installed according to the plans and all documentation was prepared to state the changes and final conditions of the structure.

The deteriorating condition of the ballast walls at the Bee Road bridge for a client required attention before failure. Since the bridge was set on “temporary” mats on each end of the bridge a more permanent fix was requested. The superstructure of the bridge (bridge beams) were in good condition, so the wooden deck components were replaced and the whole structure was re-used and set on a steel cap beam with steel bearing piles driven into the ground to refusal to achieve a permanent substructure condition. The new ballast wall was set with thick treated timber planks to promote longevity. This is a great example of taking an existing structure in good condition and retrofitting it to work for our client’s needs.

In 2018, KEYERA CORP. required replacement of an old 70.635m long 4 span bridge over the Deep Valley Creek due to material deficiencies on the existing structure. Trilogy Crossing Corp. proposed a permanent 73.152m (240ft.) 3 span twin steel girder/concrete deck composite bridge to replace the existing bridge that requires access for heavy vehicle configurations to the nearby operating field. Many site constraints were present as the existing bridge had to remain open for traffic in the area, the bridge extents were to remain in the proper right-of-way, and proper fish habitat was to be maintained and monitored during the construction. Trilogy Crossing Corp. was involved in the construction of the bridge and prepared all quality assurance documentation for the project to ensure the bridge was constructed to the proper standards and codes used in the area.
The structure was constructed in the fall of 2018 a few days ahead of schedule and open to traffic.

An oil/gas client required access to the other side of a creek that did not freeze during winter conditions in order to do a reclamation project in the area. Trilogy Crossing Corp. proposed a plan and methodologies to cross the stream, and construction started in February 2019 and only took one two days to have the bridge in service. The bridge consisted of 2 temporary bridges (18.288m and 24.384m or in imperial 60ft. and 80ft.) that spanned the open water and had one pier on a dry gravel bar in the middle of the creek. The mats were positioned and the pier was built with interlocking lock-blocks to match the abutment elevations so the bridges were not on a slope. Due to the portable nature of the bridges, they were able to be installed in record timing. As-built documentation was prepared by Trilogy Crossing Corp. upon completion as required by regulation and the client successfully completed the reclamation project in a few weeks.