Two pre-fab bus islands have hit the streets of northwest Portland

Two pre-fab bus islands have hit the streets of northwest Portland

New bus island on NW 18th at Flanders already getting some use.
(Photos: Jonathan Maus/BikePortland)

“Over the next several years, this tool will be implemented in a variety of contexts and locations throughout the city.”

How to safely integrate bus and bike traffic on the same street has been a challenge for the City of Portland for many years. When bus operators service curbside stops, they often encroach into the bicycle traffic lane, cutting off riders and starting a “dangerous dance”.

Curbside bus stops also require bus operators to swerve out — and then back into — other lanes. And because so many people fail to yield to the bus, this causes travel time delays for transit users.

The solution is to put the bus stop out in the roadway so that the bus driver doesn’t have to swerve at all. These are called “floating bus islands” and now the Portland Bureau of Transportation has a way of installing them that’s relative cheap and simple. In fact, the new bus islands snap together like Lego bricks.

Just over two years ago, PBOT began looking into pre-fabricated bus islands from Spanish company Zicla and they’ve finally installed them. There are two islands in place in northwest Portland on NW 18th and 19th at Flanders.


18th and 19th form an important north-south couplet for bicycle and transit users. These streets will become even more vital in our bike network as PBOT finished building the NW Flanders bikeway (which will include a new carfree bridge over I-405) and other street updates as part of the Northwest In Motion plan.

Both of these locations currently have bike lanes next to a lane of on-street car parking. The addition of these bus stops changes the bike lane slightly by routing it over to the curbside, then up a ramp, onto the bus platform, and down another ramp before merging back over to the bike lane. As you can see in the photos PBOT crews have added green thermoplastic to the bike lane as it approaches the bus platform.

From a riding standpoint, the experience was very smooth. The gradient up the ramp is very slight and the blocks are snugged together so well I didn’t feel much of a bump at all. The blocks are also bolted into the ground so they don’t move when you hit them. The material itself is recycled plastic that has a texture on it. I don’t think slippage will be a problem, partly because of that textured surface, but also because this product has been tested and used in many other cities worldwide.

Once up the ramp, the biking zone has a bold checkered pattern to keep it separate from the bus passenger loading/unloading zone. There’s ample space for bus passengers but keep in mind that people on foot have priority and you should be ready to brake and/or yield to them when necessary.


During my observations last night I didn’t see a bus passenger and bike rider use the platform at the same time. The real test of these will be at a location that’s busy for both bus and bike riders.

From a bus riders’ perspective the only thing that will change (besides faster trip times) is a few extra steps required to reach the curb.

Car drivers will experience delays on one-lane roads because they won’t have the option of swerving around the bus when it pulls to the curb. Sorry!

Given the ease of installation, relative low cost (about $30,000 to $50,000 each), and big benefits for biking, walking (the islands shorten the crossing distance at intersections), and bus users/drivers PBOT says they expect these to be used, “in a variety of contexts and locations throughout the city over the next several years.”

These islands will be particularly useful in locations with protected bike lanes where PBOT has been reluctant to install curbs and wands due to bus access needs. PBOT also sees them as a key component to speed up buses on their Rose Lane routes.

And who knows what else PBOT will do with them? “This technology could allow for more creativity and experimentation with various design choices,” PBOT said in a statement yesterday, “Since, like building blocks, these platforms can be quickly disassembled and reassembled as something else entirely.”

— Jonathan Maus: (503) 706-8804, @jonathan_maus on Twitter and
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