Any motorists finding themselves on an unexpected trip over the Port Mann Bridge into Surrey because of the construction maze that is the Cape Horn Interchange won't be alone.

It appears the professionals behind the wheel occasionally make the same mistake, too.

On a couple of occasions, Coquitlam transit buses have also gone the wrong way accidentally into Surrey.

The most recent mishap occurred Wednesday evening, with several passengers taking to Twitter over the incident, which drew this tweet in response from TransLink officials: "Sounds like the new Cape Horn Interchange is a wee bit confusing! ;) Driver & passengers are okay, but they are going on a rather extensive diversion."

TransLink spokesman Derek Zabel said there is occasional confusion with the signage around the route at the interchange, especially at night, but added incidents such as Wednesday night's are rare.

He said transit supervisors ended up putting buses on detours to make the route less confusing.

"We're doing the best we can with the situation that's everchanging," he said, adding for the most part, the signage along the Cape Horn is pretty good.

Zabel explained TransLink does have transit supervisors in Coquitlam to monitor the construction situation at the interchange, while buses are equipped with a GPS system that can handle up-to-date instructions regarding any changes.

"It was a little bit confusing this time around," he said.

Zabel noted TransLink is also in constant communication with cities and crews over the myriad construction projects in Metro Vancouver.

But TransLink officials suggested the incident does serve as a reminder that transit users may want to build a little extra time in their routine on routes in the construction area.

"People may note their bus route may run a little bit behind schedule while they [buses] do have to reroute and divert around different areas," Zabel said.

"Anytime you have to take a bus a little bit off its schedule, that's when it can run a little bit behind schedule, or sometimes a little bit ahead of schedule."

During the previous two weekends, officials for the Port Mann/Highway 1 Improvement Project were warning drivers to avoid the bridge and interchange as crews worked to demolish the remaining sections of the old Cape Horn overpass.

The majority of the work at the interchange is expected to be complete by December.

jdeutsch@thenownews.com