Marquam Bridge

The Interstate 5 Bridge

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The Marquam Bridge (MAR-kum), also known as the Interstate 5 Bridge, was completed in 1966. It connects Interstate 5 with Interstate 84 on the east side, and with Interstate 405 on the west side. The bridge carries traffic on two decks, which are stacked vertically, supported by trusses.

The bridge is not designed to carry pedestrian or bicycle traffic. Public reaction to the design of this structure was less than enthusiastic, which helped fuel a public design-review process that was carried out when the Fremont Bridge was built.

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