Home > California > Alton vicinity > Van Duzen River Bridge, Spanning Van Duzen River at CA State Highway 101, Alton, Humboldt County, CA
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Item Title
Van Duzen River Bridge, Spanning Van Duzen River at CA State Highway 101, Alton, Humboldt County, CA
LocationSpanning Van Duzen River at CA State Highway 101,
Alton vicinity, CA
Find maps of Alton, CA
Created/Published
Documentation compiled after 1968.
Notes
Survey number HAER CA-129
Building/structure dates:
1925 initial construction
Significance: The Van Duzen River Bridge, also known as the Alton Bridge, was determined eligible for listing in the National Register of Historic Places in 1986. It represents a transitional design in the evolution of concrete arch bridges, and is the earliest surviving bridge designed under the direction of Harlan D. Miller, California's second state bridge engineer and the man most responsible for providing engineering design and aesthetic direction for California bridges between 1924 and 1940.
Subjects
Vehicular Bridges
Collection
Historic American Engineering Record (Library of Congress)
Contents
Photograph caption(s):
1. CONTEXTUAL VIEW OF BRIDGE IN SETTING, LOOKING EAST FROM DOWNSTREAM. DOWNSTREAM HIGHWAY BRIDGE DATES FROM 1952, UPSTREAM RAILROAD BRIDGE DATES FROM 1913
2. CONTEXTUAL VIEW OF BRIDGE IN SETTING, LOOKING NORTHWEST FROM UPSTREAM
3. CONTEXTUAL VIEW OF BRIDGE IN SETTING, LOOKING SOUTHWEST FROM ELEVATED GRADE OF EUREKA SOUTHERN RAILROAD. EUREKA SOUTHERN TRUSS BRIDGE AT EXTREME LEFT, 1924 HIGHWAY BRIDGE IN CENTER, 1952 HIGHWAY BRIDGE AT RIGHT
4. OBLIQUE VIEW OF UPSTREAM ELEVATION, LOOKING WEST FROM EUREKA SOUTHERN RAILROAD BRIDGE
5. OBLIQUE VIEW OF UPSTREAM ELEVATION, LOOKING SOUTHWEST FROM RIVER BANK
6. OBLIQUE VIEW OF UPSTREAM ELEVATION, LOOKING NORTH FROM EUREKA SOUTHERN RAILROAD BRIDGE
7. VIEW OF SOUTHERN APPROACH, LOOKING NORTH
8. OBLIQUE VIEW OF DOWNSTREAM ELEVATION, LOOKING NORTHEAST
9. VIEW, LOOKING SOUTH OF DOWNSTREAM SIDES OF ALL THREE BRIDGES, SHOWING PROXIMITY OF BRIDGE TO ONE ANOTHER
10. OBLIQUE VIEW OF DOWNSTREAM ELEVATION, LOOKING SOUTH FROM BENEATH 1952 HIGHWAY BRIDGE
11. OBLIQUE VIEW SHOWING DOWNSTREAM SIDE OF BRIDGE, LOOKING SOUTH SOUTHWEST
12. DETAIL VIEW OF BRIDGE, SHOWING SPRING LINE OF SPANS FROM CROWN OF MID-CHANNEL PIER, PAIRED COLUMNS SUPPORTING DECK, ARCHED WINDOW RAILING, LOOKING WEST-NORTHWEST FROM EUREKA SOUTHERN RAILROAD BRIDGE. CABLES VISIBLE IN BACKGROUND ARE EARTHQUAKE RESTRAINERS RETROFITTED TO 1952 HIGHWAY BRIDGE, WHICH FUNCTIONED AS DESIGNED IN APRIL 1992 TEMBLOR
13. DETAIL VIEW OF A TYPICAL PIER ON DOWNSTREAM SIDE OF BRIDGE, LOOKING EAST-SOUTHEAST
14. VIEW SHOWING UNDERSIDE OF APPROACH SPANS, LOOKING NORTHEAST
15. DETAIL VIEW OF REMNANT OF LALLY-COLUMN THAT SUPPORTED THE 1901 TRUSS BRIDGE WHICH WAS SUBSEQUENTLY REPLACED BY CONCRETE ARCH BRIDGE IN 1924, LOOKING WEST FROM NORTH BANK OF RIVER
16. LOCATION PLAN. August 27, 1923
17. GENERAL PLAN. MARCH 4, 1924
18. ELEVATIONS OF ARCH RING. March 4, 1924
19. DETAILS OF ARCH. March 4, 1924
20. PIERS AND ABUTMENTS. March 4, 1924
21. DETAILS AND STEEL LIST. March 4, 1924
22. APPROACH SPANS. March 4, 1924
23. DETAILS. March 4, 1924
24. REVISED CONSTRUCTION OF NO. ABUTMENT. December 4, 1924
25. REVISED RAILING DETAILS. ca. 1924
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