Lynn Creek Bridge & Brooksbank Ave Underpass

Location: North Vancouver, BC
Owner: Port Metro Vancouver
Completed: January 2012
Value: $16.3M

As part of improvements to rail capacity in the North Shore trade area, six track widening of the existing railway bridge over Lynn Creek and the existing rail/road grade separation at Brooksbank Avenue was required.  Port Metro Vancouver (PMV) coordinated this multi stakeholder infrastructure improvement project, with GIG being awarded the contract through a combined prequalification and competitive bid process.

The multi discipline nature of the Lynn Creek/Brooksbank Project perfectly suited GIG’s skill set. The GIG partners provided the expertise to complete the major construction elements:  all cofferdams, dewatering, foundations, structural concrete, bridge deck precast, earthworks, underground utilities, environmental protection, earthworks and road construction.
The GIG project management team successfully scheduled and coordinated this work with that of specialty contractors to ensure completion of the project on time and on budget. Extensive construction staging was required to provide continuous access to port facilities and local businesses.  By first constructing the new railway bridge over Lynn Creek, the railway bridge was temporarily used as a vehicle bridge, as part of an elaborate detour, allowing for an extended closure of Brooksbank Avenue for the underpass construction.

The Gateway Infrastructure Group was contracted to:

– Constructing a 70m long by 28m wide rail bridge to accommodate 6 new railway tracks across Lynn Creek
– Constructing a 28m long extension of the Brooksbank Ave Underpass including extensive cast-in- place retaining walls for the underpass approaches
– Providing Fisheries compensation by the creating new riparian and instream habitat
– Relocating and expanding District of North Vancouver Parks facilities including additional hiking trails and parking for Harbourview Park
– Relocating and upgrading Port Metro Vancouver and municipal underground services
– Installing sheetpile and anchor piling support of adjacent existing rail bridge
– Dewatering
– Constructing a cofferdam and excavating for abutment construction
– Stabilizing river bank