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Maryland

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Middletown+vicinity

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Poffenberger Road Bridge, Spanning Catoctin Creek, Middletown, Frederick County, MD



B&W Photos

HB598876
General View Looking North Showing West Truss And South Portal 2

HB598877
General View Looking Northwest With Stone Abutment In Foreground

HB598878
General Side Elevation View Looking West

HB598879
Detail View Looking North Showing Wooden Deck And Upper Chord Cross Bracing

HB598880
Detail View Of Northern End Of Bridge Looking East

HB598881
Detail View Of Upper Chord Portal Connection Looking Up From Bridge Deck

HB598882
Detail View Of Upper Chord Connections Taken From Bridge Deck

HB598883
Detail View Looking South Showing 'camber' Or Arch Of Bottom Chord On East Side Of Bridge

HB598884
Detail View Of The Hip Vertical's Bottom Chord Connection

HB598885
Detail View Of Bottom Chord Connection At Second Panal Point In From Abutment

HB598886
Detail View Of Bottom Chord Connection At Third Panal Point In From Abutment

HB598887
Detail View Showing Bottom Chord U-bolt (or Hanger) Connection And Attached Floorbeam

HB598888


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Catoctin Creek, Middletown+vicinity, MD

Find maps of Middletown+, MD


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER MD-35
Significance: The bridge is a well preserved example of a wrought iron double-intersection Pratt through truss. It is pin-connected at the bottom chord connections and at the upper chord portal connections and at the upper chord portal connections. Its diagonals are joined to the other top chord connections by screw connections. The structure is supported on random coursed stone abutments that appear to date at least to 1878...

Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. GENERAL VIEW LOOKING NORTH SHOWING WEST TRUSS AND SOUTH PORTAL 2. 'BARREL-SHOT' LOOKING WEST
3. GENERAL VIEW LOOKING NORTHWEST WITH STONE ABUTMENT IN FOREGROUND
4. GENERAL SIDE ELEVATION VIEW LOOKING WEST
5. DETAIL VIEW LOOKING NORTH SHOWING WOODEN DECK AND UPPER CHORD CROSS BRACING
6. DETAIL VIEW OF NORTHERN END OF BRIDGE LOOKING EAST. STONE IS AT FAR LEFT. THE VIEW SHOWS DIAGONAL TENSION MEMBERS EXTENDING ACROSS TWO PANELS AND THAT TWO PINS ARE USED AT THE UPPER CHORD PORTAL CONNECTION
7. DETAIL VIEW OF UPPER CHORD PORTAL CONNECTION LOOKING UP FROM BRIDGE DECK. THE DECORATIVE FEATURES OF THE PORTAL BRACING ARE ALSO SHOWN
8. DETAIL VIEW OF UPPER CHORD CONNECTIONS TAKEN FROM BRIDGE DECK
9. DETAIL VIEW LOOKING SOUTH SHOWING 'CAMBER' OR ARCH OF BOTTOM CHORD ON EAST SIDE OF BRIDGE
10. DETAIL VIEW OF THE HIP VERTICAL'S BOTTOM CHORD CONNECTION
11. DETAIL VIEW OF BOTTOM CHORD CONNECTION AT SECOND PANAL POINT IN FROM ABUTMENT
12. DETAIL VIEW OF BOTTOM CHORD CONNECTION AT THIRD PANAL POINT IN FROM ABUTMENT. NOTE THAT THE BOTTOM CHORD IS CONTINUOUS ACROSS THE CONNECTION
13. DETAIL VIEW SHOWING BOTTOM CHORD U-BOLT (OR HANGER) CONNECTION AND ATTACHED FLOORBEAM. ALSO NOTE THE WOODEN STRINGERS THAT RUN PARALLEL TO THE BOTTOM CHORD AND SUPPORT THE BRIDGE DECK


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