When Mayor Brandon Johnson’s sky blue Divvy bike rolled along Milwaukee Avenue Tuesday morning, it passed over a milestone.

The River West infrastructure project that the mayor pedaled on marks the 100th mile of bike lanes and other cycling infrastructure built by his administration, he announced Tuesday.

And the new protected lane connecting the Northwest Side to downtown — marked by concrete barriers, neon green-painted cycling paths, bus loading “islands” and raised pedestrian crosswalks — could serve as a road map for Chicago, he told the Tribune while biking to a news conference marking the occasion.

“Real, secure, protected bike lanes throughout the city is the ultimate goal,” Johnson said, half his attention set on navigating traffic. “I don’t want there to be any section of the

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