On July 4, 1918, a contract was awarded to A. D. Kern of eighteen miles of gravel surfacing between Hood River and the Multnomah County Line on the basis of cost plus fifteen per cent on labor and supplies and twelve and one-half per cent on equipment; provided, that no percentage should be paid on any cost over $50,000. This work also includes the building of shoulders on the one mile of pavement built by S. Benson in 1916 adjacent to the Multnomah County Line. The gravel for this work was taken from pits at Cascade Locks, Herman, Sonny and Hood River, was loaded by steam shovels, screened at two of the pits and hauled by auto trucks. As a result there is now a gravel surface between Hood River and Cascade Locks. A total of 23,396 cubic yards was placed upon the road at an average cost of $2.88 per cubic yard which represents total cost of excavating, screening, hauling, spreading and rolling.
ON THE COLUMBIA RIVER HIGHWAY
IN HOOD RIVER COUNTY TWO MILES EAST OF CASCADE LOCKS.
GRADED AND GRAVELED IN 1917 AND 1918
[Hood River Bridge]
The largest concrete bridge so far designed and constructed by the State Highway Department is that spanning Hood River near the city of Hood River. It consists of three arch spans 95 feet, center to center of piers, 110 feet of reinforced concrete approach on the Hood River side and a short approach on the opposite side.
As in other arch work of similar magnitude studied by the Department, it was found economical to support the arch superstructures on ribs instead of using rings extending clear across the roadway, and the open spandrel idea was carried out.
The concrete viaduct approach on the west side crosses three railroad tracks which govern the height of the bridge. In order to minimize this height through concrete girders were used, the girders projecting above rather than below the roadway slab.