Ironworkers Memorial Second Narrows Crossing, Cantilever bridge across Burrard Inlet, Vancouver, Canada.

The Ironworkers Memorial Second Narrows Crossing is a steel truss cantilever bridge across the Second Narrows of Burrard Inlet in Vancouver, Canada. Its yellow truss has a curved lower chord and carries a roadway on the upper deck, supported near the centre by two concrete piers. The bridge is 1,292 metres long with a centre span of 335 metres, and a smaller green truss bridge stands beneath its right section.

Construction began in the mid-1950s to create a second crossing over the inlet. In 1958, a section collapsed during work, killing 19 people in what became the city's worst industrial accident.

The bridge was renamed the Ironworkers Memorial Second Narrows Crossing on June 17, 1994, honouring the eighteen workers killed in the 1958 collapse, one rescue diver and four other workers who died during construction. The name is used alongside the older Second Narrows Bridge, which now refers to the adjacent rail bridge.

The crossing carries several tens of thousands of vehicles daily and includes separate paths for pedestrians and cyclists. Strong winds from the water can make walking or cycling across more difficult, especially on exposed sections.

Engineers found that errors in temporary support calculations caused the collapse. The investigation led to stricter safety rules for major construction projects across North America.