|
The Waldo Grade is a highway grade between the Golden Gate Bridge and Marin City on U.S. Route 101 in California. It is defined as the stretch of roadway between the Spencer Offramp and Marin City, within the city of Sausalito.〔(Caltrans definitions of highway segments in District Four )〕 This grade is traversed by a full freeway multi-lane highway facility. The highest elevation on this freeway section is at the Waldo Tunnel. This portion of U.S. Route 101 is an important link in surface transportation connecting the city of San Francisco to Marin County and the North Bay. Nearby locations to the Waldo Grade include: the city of Sausalito, the U.S. Army Corps of Engineers Bay Model, The Marine Mammal Center and the Golden Gate National Recreation Area. ==Waldo Tunnel== A tunnel unofficially known as the "Waldo Tunnel" is located on U.S. Route 101 between the Golden Gate Bridge and Sausalito. It is named after Waldo Point along Richardson Bay between Sausalito and Mill Valley, which is in turn named after 1850s California politician William Waldo. The first bore of the tunnel was completed in 1937 and the second in 1954. The archways at the ends of the bores were painted in rainbows by a Caltrans employee, Robert Halligan, and for this reason the tunnel is occasionally referred to as the "Rainbow Tunnel". After the death of Robin Williams in 2014, a petition was started on Change.org to rename the Waldo Tunnel as the "Robin Williams Tunnel". A bill submitted by California Assemblyman Marc Levine, after consulting with Williams' family, passed the California State Assembly in April 2015 on a vote of 77-0, and the State Senate in June 2015 on a vote of 37-0. The official naming is expected to take place as early as fall 2015.〔 As San Francisco and the Golden Gate Bridge are hidden from the northern approach of Route 101 by hills, it is likely that some portion of visitors receive their first view of the city and the bridge upon exiting the tunnel's southbound bore. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Waldo Grade」の詳細全文を読む スポンサード リンク
|