Yaquina Bay Bridge, Newport

The Yaquina Bay Bridge is an arch bridge that spans Yaquina Bay south of Newport, Oregon. It is one of the most recognizable of the U.S. Route 101 bridges designed by Conde McCullough. The Yaquina Bay Bridge is one of eleven major bridges on the Oregon Coast Highway designed by McCullough. It superseded the last ferry crossing on the highway.
Work on the Yaquina Bay Bridge began on August 1, 1934. The bridge opened on September 6, 1936, at a cost of $1,301,016. A total of 220 people worked to pour 30,000 cubic yards (23,000 m³) of concrete and fabricate 3,100 tons of steel. The contractors were the Gilpin Construction Company of Portland, Oregon, and the General Construction Company of Seattle, Washington. The main arch was built in toward the center from the anchorages, using tiebacks to support the arch until it could be closed. The piers are supported by timber pilings driven to a depth of about 70ft below sea level. The project received funding from the Public Works Administration.
The 600ft main span is a semi-through arch, with the roadway penetrating the middle of the arch. It is flanked by identical 350ft steel deck arches, with five concrete deck arches of diminishing size extending to the south landing. The main arch is marked by tall obelisk-like concrete finials on the main piers, with smaller decorative elements marking the ends of the flanking spans. The arches are built as box girders. The two-lane road is 27ft wide, running inside the arches with two 3.5ft sidewalks. The main arch is 246ft above sea level at its crown. Overall length of the bridge is 3260ft, including concrete deck-girder approach spans. The navigable channel measures 400ft wide by 133ft high.

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