West Vancouver Police are now investigating a head-on collision on the Lions Gate Bridge this morning that shut down traffic in both directions during the morning rush hour for an hour and a half.

Const. Jeff Palmer says police have not determined the cause yet, but distracted driving may be one possibility they are looking at.

"Road conditions weren't a factor, obviously weather -- clear and dry -- so we are looking into factors up to and including actions of drivers that were involved."

Palmer said the driver of a northbound vehicle drifted over into one of the southbound lanes in the mid-span section of the bridge, just after 8 a.m. PT Tuesday.

The driver of the northbound vehicle was taken to hospital with fractures. The driver and a passenger in the southbound car were taken to hospital for observation.

Investigators have talked to witnesses at the scene, but Palmer says anyone else who witnessed the crash should contact them.

Buses that would have crossed the bridge earlier this morning were dropping passengers at the SeaBus terminals in Vancouver and North Vancouver instead, creating long lines at both terminals.

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