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Morrison Bridge

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Identification

Morrison Bridge
239426

Map

Structure in General

bridge
existing [completed]

Facts

  • Two other Morrison bridges preceded the current structure; they were built in 1887 and 1905.
  • The average opening time is 6 minutes.
  • The Morrison Bridge uses two 900-ton counterweights to lift the bridge's main piers.
  • Moffatt, Nichol and Taylor worked on the approaches, while Sverdrup/Parcel worked on the main span.
  • The name of the bridge came from "The Godfather of Morrison Street", John L. Morrison.
  • The design of the bridge approaches called for concrete decks with steel girders that were supported by reinforced concrete columns and caps.
  • The bridge is steel double-leaf Chicago-style trunnion bascule.
  • The grand opening was held on May 24, 1958.
  • The total bridge length is 760 feet.
  • In 1987, the Morrison Bridge became the first Willamette Bridge to be lit at night.

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More Information

Location

SE Morrison Street
Morrison Bridge
Downtown
Southeast
Portland
Oregon
U.S.A.

Technical Data

69.00 ft
284.00 ft
78.00 ft
1958
1997
$12,900,000

Involved Companies


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