Get to know Portland's bridges: Tilikum Crossing

• It carries four TriMet bus lines, the MAX Orange Line, and the Portland Streetcar and has dedicated cyclist and pedestrian lanes — moving tens of thousands of people per day.

Flashback: Restricting private vehicle use of the bridge was always the goal.

• Regional leaders wanted a way to link the South Waterfront District and the OHSU campus with the Central Eastside and OMSI without adding traffic while also advancing the city's climate-friendly infrastructure.

Zoom in: Designed by TriMet, HNTB and MacDonald Architects, the Tilikum is a four-pier, 1,720-foot cable-stayed bridge with two 180-foot towers and roughly 3.5 miles of cable.

• It's the only bridge in Portland that was built to be able to sustain high levels of seismic activity with only moderate damage, but its approaches are not.

Follow the money: It cost nearly $135 million to build and was funded largely by federal transit dollars tied to the MAX Orange Line project.

The intrigue: The bridge's name comes from the Chinook Wawa language and means "friends," "relatives" or "common people" and was selected to reflect its human-centered purpose.

• While critics initially questioned the car ban and cost, the bridge has become a favorite among many for its nightly light show, which responds to the river's currents.