Speed limits on Highway 1 have been reduced between Vancouver and Langley as construction crews widen the freeway to 10 lanes, upgrade interchanges, and complete the new Port Mann Bridge.

From the Cassiar Tunnel in Vancouver to Grandview Highway in Burnaby, the speed limit dropped from 100 km/h to 70 km/h. From Grandview Highway to 208th Street in Langley, it dropped to 80 km/h.

The lower limit between Vancouver and Burnaby is to accommodate crews widening overpasses at 1st Avenue, Lougheed Highway and Boundary Road.

The speed limit between 208th Street and 216th Street in Langley will be unaffected until construction in that area begins.

New speed signs will be installed to alert drivers, who are reminded that traffic fines double in construction zones.

The construction is part of the Port Mann/Highway 1 (PMH1) Improvement Project, scheduled to be completed in 2013. The new 10-lane, $2.4-billion Port Mann Bridge is scheduled to open in December 2012.

Up-to-date traffic information and construction schedules are available at the PMH1 website.