Interstate 5 North - Portland

Interstate 5

Interstate 5 navigates through Multnomah County entirely within the Portland city limits. The freeway enters the county in southwest Portland, where hilly terrain results in several S-curves from Exits 294 to 298. Beyond the split with Interstate 405 to Downtown at Exit 299 B, I-5 crosses the Willamette River over the two-level Marquam Bridge and follows the east bank of the Willamette River. North from there, the freeway proceeds through a network of overpasses and flyover ramps at the exchanges with Interstate 84 east and the north end of I-405 (Stadium Freeway). The river bends west, and I-5 continues a northbound trajectory through Portland neighborhoods to the Columbia River.

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References:

  1. Steel Bridge. PortlandBridges.com.

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Page Updated Friday August 22, 2025.