{{Short description|Twin bridges in San Mateo County, California, U.S.}} {{Use American English|date=January 2025}} {{External links|date=August 2018}}
{{Use mdy dates|date=August 2018}} {{Infobox bridge | name = Doran Memorial Bridge | native_name = | native_name_lang = | image = Highway 280 from the Crystal Springs Reservoir Dam and Bridge (4145016410).jpg | image_size = | image_upright = | alt = | caption = Doran Memorial Bridge | coordinates = {{Coord|37.530253|-122.360639|display=inline,title|region:US-CA_type:bridge}} | os_grid_reference = | carries = {{Jct|state=CA|I|280}} | crosses = San Mateo Creek | locale = | official_name = Officer Eugene A. Doran and Marine Lance Corporal Patrick M. Doran Memorial Bridge | other_name = San Mateo Creek Bridge | named_for = Eugene A. Doran and Patrick M. Doran | owner = Caltrans | maint = | heritage = | id = 35 0199 | id_type = | website = | preceded = | followed = | design = Steel girder | material = | material1 = | material2 = | length = | width = | height = | depth = | traversable = | towpath = | mainspan = | number_spans = | piers_in_water = | load = | clearance_above = | clearance_below = {{Convert|250|ft|abbr=on}} | life = | architect = Mario J. Ciampi | designer = California Division of Highways | contracted_designer = | winner = | engineering = | builder = Dan Caputo Corporation | fabricator = Kaiser Steel | begin = | complete = 1967 | cost = | open = {{Start date and age|1969|05|28}} | inaugurated = | rebuilt = | collapsed = | closed = | replaces = | replaced_by = | traffic = | toll = | map_type = | map_relief = | map_dot_label = | map_image = | map_size = | map_alt = | map_caption = }}
The '''Doran Memorial Bridge''' is the twin pair of steel girder bridges that carry eight lanes of road traffic on Interstate 280 over San Mateo Creek near Hillsborough, California in San Mateo County.
==History== The Doran Memorial Bridge was originally known as the '''San Mateo Creek Bridge''' according to Caltrans plans.<ref name=CHPW-6405>{{Cite magazine|url=https://archive.org/stream/californiahighwa196465calirich#page/n174/mode/1up|title=Bay Area Report—1964: San Mateo County|pages=24, 26, 39|author=Sinclair, J.P.|magazine=California Highways and Public Works|date=May–June 1964|publisher=Division of Highways, Department of Public Works, State of California|volume=43|number=5–6|access-date=August 16, 2018}}</ref><ref name=CHPW-6409>{{Cite magazine|url=https://archive.org/stream/californiahighwa196465calirich#page/n331/mode/1up|title=Interstate 280|page=38|author=Hayler, R.A.|magazine=California Highways and Public Works|date=September-October 1964|publisher=Division of Highways, Department of Public Works, State of California|volume=43|number=9–10|access-date=August 16, 2018}}</ref><ref name=CHPW-6505>{{Cite magazine|url=https://archive.org/stream/californiahighwa196465calirich#page/n657/mode/1up|title=Bay Area Freeways: San Mateo County|page=36|author=Hart, Alan S.|magazine=California Highways and Public Works|date=May-June 1965|publisher=Division of Highways, Department of Public Works, State of California|volume=44|number=5–6|access-date=August 16, 2018}}</ref> It was named the '''Eugene A. Doran Memorial Bridge''' in 1969, after the Hillsborough police officer who was killed near the site on August 5, 1959;<ref>{{Cite California statute|year=1969|chapter=173|page=3765|title=Senate Concurrent Resolution No. 34—Relative to the naming of a state highway bridge in the memory of Officer Eugene A. Doran|res=SCR 34}}</ref><ref>{{Cite news|url=https://www.sfgate.com/sfhistory/slideshow/The-tragic-brutal-story-behind-the-naming-of-the-202195.php|title=The tragic, brutal story behind the naming of the Doran Memorial Bridge|author=Moffitt, Mike|date=May 8, 2020|work=SF Gate|access-date=12 May 2021}}</ref> Doran's widow attended the ribbon-cutting ceremony on May 28, 1969.<ref>{{Cite news|url=https://www.newspapers.com/newspage/52477656|title=Kind Words For Officer Heroes|date=May 29, 1969|newspaper=The Times|location=San Mateo, California|access-date=12 May 2021}}</ref> In 2004, the bridge was rededicated as the '''Officer Eugene A. Doran and Marine Lance Corporal Patrick M. Doran Memorial Bridge''' to include his son, Patrick, who died in Vietnam on February 18, 1967 while serving in the United States Marine Corps.<ref>{{Cite California statute|year=2004|chapter=138|page=7588|title=Senate Concurrent Resolution No. 65—Relative to the Officer Eugene A. Doran and Marine Lance Corporal Patrick M. Doran Memorial Bridge|res=SCR 65}}</ref>
Prior to the opening ceremony on May 28, 1969, a "Pedestrian Day" was held on May 25, with more than 30,000 crossing the new span on foot.<ref>{{Cite news|url=https://www.newspapers.com/newspage/52475058|title=30,000 Take Walk Across New Bridge|date=May 26, 2021|newspaper=San Mateo Times|access-date=12 May 2021}}</ref>
It won the Medium Span, High Clearance category in the 1970 AISC steel bridges contest.<ref>{{Cite web|url=https://www.aisc.org/globalassets/nsba/prize-bridge-brochures/1970prizebridgebrochure.pdf|title=Prize Bridges 1970|author= <!--Staff writer(s); no by-line.--> |publisher=American Institute of Steel Construction|date=1970|access-date=August 16, 2018}}</ref> Markers commemorating Eugene A. Doran and the AISC award are at the Crystal Springs Safety Roadside Rest Area off northbound I-280, approximately {{Convert|1/2|mi}} north of the bridge itself.<ref>{{Cite web|url=https://www.hmdb.org/marker.asp?marker=18330|title=Eugene A. Doran Memorial Bridge|author=Whittle, Syd|date=April 2009|publisher=Historical Marker Database|access-date=August 16, 2018}}</ref> The Doran Memorial Bridge was featured on the cover of the ''1972 Highway Statistics'' report published by the Federal Highway Administration with other recently completed major structures, including the Verrazzano–Narrows Bridge, the Chesapeake Bay Bridge-Tunnel, and the Cowlitz River Bridge.<ref>{{Cite report|url=https://books.google.com/books?id=zj-VHGkbycMC&pg=PP1|title=1972 Highway statistics|publisher=U.S. Government Printing Office|access-date=August 16, 2018}}</ref>
==Design and construction== [[File:Doran Bridge Model (CHPW May-Jun 1964).jpg|thumb|left|1964 bridge model with Crystal Springs Dam]] The bridge was designed by Caltrans architect Warren S. Ludlow, engineers Robert Cassano and Delmar Janson, with assistance from Mario J. Ciampi.<ref name=CHPW-6405 /><ref>{{Cite news|url=https://www.newspapers.com/newspage/460204387|title=Bay Area at Your Feet: Walk Over a Canyon|author=Doss, Margot Patterson|date=May 25, 1969|newspaper=San Francisco Examiner|access-date=12 May 2021}}</ref><ref>{{Cite news|url=https://www.sfgate.com/bayarea/article/SIGNATURE-STYLE-Mario-Ciampi-Works-writ-bold-2563789.php|title=Signature Style: Mario Ciampi / Works writ bold / Architect believes creative design can change how people live|author=Weinstein, Dave|date=October 22, 2005|newspaper=San Francisco Chronicle|access-date=August 16, 2018}}</ref> Ciampi was commissioned to design freeway structures for I-280 by the Division of Highways in 1963.<ref>{{Cite web|url=http://www.dot.ca.gov/dist4/history_d_4.htm|title=Caltrans District 4: Timeline of Events|publisher=California Department of Transportation|access-date=August 16, 2018}}</ref>
Four arched concrete piers support the twin girder bridges.<ref name=CHPW-6405 /> They use modified Gothic arches;<ref>{{Cite news|url=https://www.newspapers.com/newspage/52406819|title=Call Bids on S.M. Creek Bridge|date=February 16, 1965|newspaper=San Mateo Times|access-date=12 May 2021}}</ref> the finish was left in the natural concrete color, and the surfaces were contoured to help them blend into their surroundings.<ref name=SFE-690511/> The twin bridges contain five parallel welded steel girders and are connected by a {{Convert|22|ft|adj=on}} wide concrete slab.<ref name=CHPW-6409 /> The structural steel is concealed by a slanted panel on either side.<ref name=CHPW-6405 /> Bids were opened on April 7, 1965, for the stretch of freeway including the San Mateo Creek Bridge.<ref name=CHPW-6505 /> To minimize impact on the gorge below, materials were lowered from a "high line" built between towers on the adjoining cliffs. It is next to the 1888 Crystal Springs Dam, which was (at the time of its completion) the largest concrete structure in the world.<ref name=SFE-690511>{{Cite news|url=https://www.newspapers.com/newspage/460217440|title=Peninsula's Bridge Open May 28|date=May 11, 1969|newspaper=San Francisco Examiner|access-date=12 May 2021}}</ref> Construction of the first pier began in January 1966.<ref>{{Cite news|url=https://www.newspapers.com/newspage/52403829|title=New Look at S.M. Highways|date=January 8, 1966|newspaper=San Mateo Times|access-date=12 May 2021}}</ref>
==See also== *The Flintstone House
==References== {{Reflist}}
==External links== {{Commons category}} * {{Structurae|id=20019504|title=Eugene A. Doran Memorial Bridge}} * {{Cite web|url=https://brbl-dl.library.yale.edu/vufind/Record/3547951|title=The Eugene A. Doran Memorial Bridge, San Mateo Creek|author=Plowden, David|date=September 1972|publisher=Beinecke Rare Book & Manuscript Library, Yale University Library|access-date=August 16, 2018}} * {{Cite book|url=https://www.crcpress.com/Bridge-Engineering-Handbook/Chen-Duan/p/book/9781420049596|title=Bridge Engineering Handbook|edition=Second|editor1=Chen, Wai-Fah|editor2=Duan, Lian|chapter=67: The Evolution of Bridges in the United States|author=Root, Norman F.|page=67-42|isbn=0-8493-7434-0|date=1999|publisher=CRC Press|location=Boca Raton, Florida|access-date=August 16, 2018}} * {{Cite web|url=https://gigapan.com/gigapans/5713|title=Eugene A. Doran Memorial Bridge|author=Hipschman, Ron|date=June 1, 2008|publisher=GigaPan|access-date=August 16, 2018}} * {{Cite web|url=http://www.bridgeofweek.com/2010/04/california-bridges-san-mateo-creek.html|title=California Bridges - San Mateo Creek Bridge|author=Yashinsky, Mark|date=April 8, 2010|website=Bridge of the Week|type=Blog|via=Blogspot|access-date=August 16, 2018}} * {{Cite web|url=https://bridgehunter.com/ca/san-mateo/bh81150|title=Eugene A. Doran Memorial Bridge|date=2010|publisher=Bridgehunter|access-date=August 16, 2018}} * {{Cite web|url=https://www.dcco.net/history|title=History|publisher=Dan Caputo Co.|access-date=August 16, 2018}} * {{Youtube|id=QQm-P3X4mJM|title=The tallest Bridge of I-280 Freeway on the road to San Francisco}} * {{Youtube|id=jE506qKT3RM|title=280 & Crystal Springs Road, San Mateo, CA.}} * {{Cite web|url=https://www.mtheo.net/doran.html|title=the bay area's most beautiful (and least-known) bridge...|author= |date= |website=mtheo.net|access-date=August 16, 2018}}
===Doran family=== * {{Cite web|url=https://www.odmp.org/officer/4210-police-officer-eugene-albert-doran|title=Police Officer Eugene Albert Doran|date= |publisher=Officer Down Memorial Page|access-date=August 16, 2018}} * {{Cite web|url=http://www.vvmf.org/Wall-of-Faces/13687/PATRICK-M-DORAN?page=1#remembrances|title=Patrick Michael Doran|date= |publisher=Vietnam Veterans Memorial Fund|access-date=August 16, 2018}} * {{Cite news|url=https://www.smdailyjournal.com/news/local/doran-bridge-beautiful-but-sad/article_40cc6a72-c800-517b-bd7e-ab9405272612.html|title=Doran Bridge: Beautiful but sad|author=Clifford, Jim|date=September 19, 2016|newspaper=San Mateo Daily Journal|access-date=August 16, 2018}} * {{Cite news|url=https://www.cacnews.org/news/2ndq08.pdf|title=Bridge 35-199|author=Houde, John|date=2008|work=The CACNews|pages=14–22|publisher=California Association of Criminalists|access-date=August 16, 2018}}
Category:Bridges in San Mateo County, California Category:Girder bridges in the United States Category:Road bridges in California Category:Steel bridges in the United States Category:Bridges completed in 1967 Category:Bridges on the Interstate Highway System