Historic Photographs

Home

Search

Subject Browse
Browse by Subject >>

State/City Browse
Alaska
Alabama
Arkansas
Arizona
California
Colorado
Connecticut
District of Columbia
Delaware
Florida
Georgia
Hawaii
Iowa
Idaho
Illinois
Indiana
Kansas
Kentucky
Louisiana
Massachusetts
Maryland
Maine
Michigan
Minnesota
Missouri
Mississippi
Montana
North Carolina
North Dakota
Nebraska
New Hampshire
New Jersey
New Mexico
Nevada
New York
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Virginia
Vermont
Washington
Wisconsin
West Virginia
Wyoming

Home

>

District of Columbia

>

Washington

>

New Harvard Street Bridge, Spans Rock Creek & Beach Drive at National Zoo, Washington, District of Columbia, DC



B&W Photos

HB307196
View From Above, Looking East (old Harvard Street Bridge In Background)

HB307197
Underside View East, Showing Piers And Pour Sections

HB307198
Detail Of Built-in Road And Sidewalk Security Gate At Entrance To Zoo


Data Pages


Drawings


Photo Caption Pages


Item Title


Location
Spans Rock Creek & Beach Drive at National Zoo, Washington, DC

Find maps of Washington, DC


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER DC-53
Unprocessed field note material exists for this structure (N267).
Building/structure dates: 1965 initial construction
Significance: The New Harvard Street Bridge is one of the few bridges of its type in the world; the structure is a concrete box girder with a trapezoidal section, the sides angling in and down. The concrete was poured segmentally and locked together with steel reinforcing and keys.

Subjects
Pedestrian Bridges
Concrete Girder Bridges
Transportation


Related Names
Bureau Of Public Roads
Pierce, Elaine, Delineator


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. VIEW FROM ABOVE, LOOKING EAST (OLD HARVARD STREET BRIDGE IN BACKGROUND)
2. UNDERSIDE VIEW EAST, SHOWING PIERS AND POUR SECTIONS
4. DETAIL OF BUILT-IN ROAD AND SIDEWALK SECURITY GATE AT ENTRANCE TO ZOO


Back to Washington, District of Columbia