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

>

Colorado

>

Steamboat Springs vicinity

>

Four Mile Bridge, Spanning Elk River on County Road 42, Steamboat Springs, Routt County, CO



B&W Photos

HB231236

HB231237

HB231238

HB231239

HB231240

HB231241

HB231242

HB231243

HB231244

HB231245

HB231246


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Elk River on County Road 42, Steamboat Springs vicinity, CO

Find maps of Steamboat Springs, CO


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER CO-60
Building/structure dates: 1900 initial construction
Significance: The oldest vehicular bridge over the Elk River, the bridge is also the oldest bridge in Routt County and shares the distinction as the oldest bridge in northwest Colorado with the Kay's Ranch Bridge over the White River in Rio Blanco County. It is one of the last bridges erected by the Wrought Iron Bridge Company, following the consolidation of that firm into the American Bridge Company in 1900. Although a common bridge type (pin-connected Pratt through truss), this span is notable for its unaltered stone abutments and steel superstructure. In pristine condition and setting, it is a significant example of early truss construction.

Subjects
Civil Engineering
Bridge Construction
Steel Truss Bridges


Related Names
Wrought Iron Bridge Company


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. OVERALL VIEW OF BRIDGE, LOOKING NORTH FROM ELK RIVER
2. VIEW OF EAST PORTAL, SHOWING PORTAL BRACING AND END POSTS, LOOKING WEST
3. VIEW OF WEST PORTAL, SHOWING PORTAL BRACING AND END POSTS, LOOKING EAST
4. VIEW OF EAST ABUTMENT, SHOWING CONNECTION DETAILS, LOOKING EAST
5. VIEW OF EAST ABUTMENT WITH FLOOR BEAMS, STRINGERS, AND BOTTOM LATERAL BRACING, LOOKING EAST
6. DETAIL VIEW OF PIN CONNECTION, EAST ABUTMENT, LOOKING EAST
7. DETAIL VIEW OF PIN CONNECTION, NORTH WEB, SHOWING FLOOR BEANS, STRINGERS, LATTICE BRACING, EYEBARS AND DECKING, LOOKING SOUTH
8. DETAIL VIEW OF PIN CONNECTION, NORTH WEB, SHOWING FLOOR BEAM, STRINGERS, LATTICE BRACING, EYEBARS, AND PIN, LOOKING SOUTH
9. DETAIL VIEW OF PIN CONNECTION, NORTH WEB, LOOKING SOUTH
10. DETAIL VIEW OF PIN CONNECTION, SOUTH WEB, SHOWING TOP CHORD, INCLINED END POST, EYEBARS, AND PORTAL BRACING, LOOKING SOUTHWEST
11. VIEW OF PIN CONNECTION, SOUTH WEB, SHOWING TOP CHORD, LATTICE BRACING, HIP VERTICAL, EYEBARS, TOP LATERAL BRACING, AND STRUTS, LOOKING SOUTH


Back to Steamboat Springs vicinity, Colorado