Third biennial report of the Oregon State Highway Commission : $b covering the period December 1st, 1916 to November 30th, 1918Benson, Simon
History
Third biennial report of the Oregon State Highway Commission : $b covering the period December 1st, 1916 to November 30th, 1918
Benson, Simon
Highway engineering -- Oregon -- History; Water resources development -- Systems engineering -- Oregon -- History
Onion Flat Bridge
This crossing consists of a laminated wood deck on heavy stringers
supported by a series of creosoted pile bents. It is on the West Side
Highway about four miles southwest of Tigard and is designed for heavy
traffic loading.
An asphaltic wearing surface prevents moisture coming in contact with
the wooden floor and with the treated piling tends to give the maximum
length of life to the main members of the structure. This bridge is 600
feet long and cost complete $8,372.22.
Fanno Creek Bridge
The Fanno Creek bridge at Tigard on the West Side Highway consists of a
superstructure similar to the Onion Flat bridge, carried on wood bents
on concrete foundations. A sidewalk was built on one side to accommodate
pedestrians. The bridge is 70 feet long and cost $1,882.81.
Tualatin River Bridge
The bridge consists of a covered Howe truss wooden bridge of 144 foot
span and 166 lineal feet of pile trestle approach.
Like the others constructed by the State on main highways, this bridge
is of heavy traffic design, and the bridge and approaches have laminated
wood floors with asphaltic wearing surfaces. Windows are provided at
panel points to provide light and to add to the appearance of the
structure. Cost $12,968.60.
Votaw Undercrossing
A grade separation was made on the West Side Highway near Votaw, wherein
a wooden trestle was constructed to carry the Southern Pacific line
above the roadway. The structure was designed and built under the
supervision of the railroad's engineering department.
Final settlement has not yet been made with the Railway Company, but it
is estimated that the State's share of the cost of this structure will
be $4,000.00. The balance of the cost will be paid by the Railway
Company, no share of the cost being borne by the County.
Survey--Beaverton to Hillsboro
A location survey was started January 1, 1918, from the West City limits
of Beaverton and completed to the city limits of Hillsboro, a distance
of 7.7 miles. The alignment parallels the Southern Pacific Railway on
the north side of the tracks and eliminates four grade crossings. The
entire section was graded by Washington County during the 1918 season.
Survey--Forest Grove to Gaston
A survey was made from Forest Grove to Gaston, a distance of
approximately 6 miles. The alignment follows the existing road with the
exception of a change at Dilley to eliminate two railroad crossings.
Considerable grading was done between Dilley and Gaston, reducing the
grade to five per cent.
Mr. C. G. Reiter, County Surveyor of Washington County, was employed as
locating engineer for the State, and also supervised the grading in both
of the above sections.
WHEELER COUNTY
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