Highway 1 - Lower Lynn Improvements
project details
Client Name
Amrize (in partnership with the B.C. Ministry of Transportation and Infrastructure and the Government of Canada)
Location
North Vancouver, B.C. — Highway 1 at Mountain Highway
Completion Date
Summer 2019
Services Provided
Materials testing and engineering: concrete, grout and shotcrete (field and lab); soils and granular (field and lab); and asphalt (field and lab).
the scope
Partnering with Amrize, Metro Testing + Engineering provided quality-assurance materials testing across the Lower Lynn interchange projects on Highway 1. The Mountain Highway interchange, designed and built more than 50 years ago, was replaced and reconstructed to improve peak-hour traffic flow and safety, strengthen connections between municipalities, and accommodate future Highway 1 improvements.
the solution
Metro delivered field and laboratory testing for concrete, grout, shotcrete, soils, granular materials and asphalt throughout construction of the new interchange. Key components included on- and off-ramps in all four quadrants, signalization at both ends of the new structure, replacement of the two-lane Mountain Highway underpass with a new four-lane structure, a full intersection at Keith Road/Brooksbank Avenue/Mountain Highway, and a realigned Mountain Highway. The work also supported expanded active-transportation facilities — roughly 645 m of multi-use pathways, 850 m of roadway bike paths and 260 m of sidewalk — along with environmental and drainage enhancements, including rehabilitation of Keith Creek and riparian planting of native species.
the outcome
The new underpass, the eastbound off-ramp and the westbound on-ramp opened in spring 2019, with the Mountain Highway interchange completed in summer 2019. The upgraded interchange meets current engineering standards, improving safety with longer merge distances and wider shoulders, reducing congestion and improving transit reliability, while environmental enhancements better protect fish and wildlife habitat. Work then advanced to the next phase — the Keith Road/Mount Seymour Parkway interchange.
