Boone Bridge (Oregon)
45.29155427 - 122.7693414719Koordinaten: 45 ° 17 ' 29.6 " N, 122 ° 46' 9.6 " W
Boone Bridge is a bridge of steel beams over the Willamette River in Wilsonville, Oregon in the United States. The 1954 -built bridge connects the metropolitan area of Portland on Interstate 5 to the open Willamette Valley. The building is maintained by the Oregon Department of Transportation. It has a length of 339 m and consists of three lanes in each direction. West of the bridge is the point at which the bridge replaced by the Boones Ferry was.
History
Alphonso Boone, grandson of Daniel Boone, and his son Jesse Boone founded 1847, the Boones Ferry, a ferry that crossed the Newberg pool of the Willamette River. They cleared the forest and also built a road south toward Salem and north to Portland, so they created the first overland connection of Salem in the northern section of the Willamette Valley. A railway bridge was built in 1907 for a short distance up the river and served the Oregon Electric Railway.
In 1953 the State of Oregon with the construction of a new road bridge just east of Fähranlagen to guide the future Interstate 5 across the river. The four-lane scale from north to south bridge was completed in 1954 and released in July of that year for the market; the ferry was ended at the same time. The state gave the bridge in honor of the Boon family the current name Boone Bridge. At that time there was a bronze memorial plaque on one of the piers, but this was removed when the bridge was widened later.
As traffic increased, the Boone Bridge in 1970 by its original four lanes was extended to a total of six lanes, of which three lanes on a carriageway. In 1995, the bridge was dedicated as Boone Bridge again and a billboard that will be remembered with the earlier ferry, was set up at a nearby rest area. Between 1998 and 1999, the bridge was re-equipped with steel cables and the roadway renewed in order to make the building earthquake-proof. For this purpose, four million dollars were spent. In May 1999, a traffic accident with ten participating vehicles on the bridge to a nine-hour full closure. The fatal accident led to a temporary reduction in the speed limit on the bridge. In 2000, drove more than 125,000 cars daily over the bridge.
Particulars
It is built on steel girders bridge is 338.6 m long, 35.4 m wide and has a clear height of 22.9 m above the river. The Canby Ferry, which the river can also be crossed, is located a few kilometers to the east. A railway bridge in the Portland & Western Railroad is located west of Boone Bridge, so upstream.
The building is considered a bottleneck in the regional transport network, with Oregon Route 217 and Interstate 205 route traffic on Interstate 5 to cross the river. Transport authorities Oregon propose several options to alleviate this bottleneck; including the construction of a new building and the construction of several new roads to Oregon Route 18 south to connect the bridge directly to Interstate 5, and the extension of Interstate 205 south of Oregon City to I- 5 in Aurora or Woodburn. The cost of building a new building has been estimated at approximately $ 48 million in 2003.