An apology after commuters faced traffic chaos on the Port Mann bridge this morning.
Drivers faced long delays after crews blocked off a westbound lane until quarter after six.
Project spokesperson Greg Johnson says crews paving overnight had to keep the lane closed when they encountered difficulty replacing a concrete safety barrier.
"Opening the lane to traffic without that safety barrier would have been a safety issue, so we're apologizing for the inconvenience we caused the commuters."
Johnson says as work on the bridge continues until December's official opening, drivers can expect more closures.