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Lynn Avenue Bridge

Lynn Avenue Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: May 30, 2010

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Key Facts

Facility Carried / Feature Intersected
Lynn Avenue Over Railroad (Lehigh Valley Railroad)
Location
Bethlehem: Northampton County, Pennsylvania: United States
Construction Date and Builder / Engineer
1928 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
200 Feet (61 Meters)
Structure Length
205 Feet (62 Meters)
Roadway Width
20 Feet (6.1 Meters)
Spans
1 Main Span(s)
NBI Number
48730100000003

Historic Significance Rating (HSR)

Bridge Documentation

This bridge no longer exists!

Bridge Status: Demolished and replaced.

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

This bridge is very similar to the truss approach span seen on the Coplay-Northhampton Bridge. Both spans feature riveted Parker trusses whose bottom chords and floorbeams are encased in concrete, and a truss web largely composed of rolled beams. HistoricBridges.org has slightly better documentation of the approach span on the Coplay-Northampton Bridge, so be sure to view that page to see the concrete encased floor system and lower chord. Truss bridges similar to these two do not appear to be found outside of the Lehigh Valley area, suggesting they may be a county design. The concrete encasement is unusual as is the heavy use of rolled beams,  as compared to the more common state standard truss bridges also being built during this period in Pennsylvania.

The ends of the Lynn Avenue Bridge's sidewalk railings terminate with decorative concrete pillars. The Lynn Avenue Bridge also has a earthen approach to provide the elevation needed to cross the railroad tracks.

This bridge is unfortunately slated for demolition and replacement, as is the Coplay-Northampton Bridge. It is most unfortunate that Pennsylvania has chosen to destroy these bridges. It is not known if any additional examples of this design survive. The Lynn Avenue Bridge appears to carry largely residential traffic and it is not a main route. The bridge likely could be rehabilitated for continued vehicular use.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The single span, 205'-long steel Parker thru truss bridge is supported on horizontally scored concrete abutments. Metal guiderails run along the inside faces of the trusses, with lattice railings enclosing the sidewalks. The truss bottom chords and the floor system is encased in concrete. The bottom lateral bracing is not encased. The bridge has been determined historic by the PHMC.

Discussion of Surrounding Area

The Lynn Avenue Bridge carries a 2 lane road with 2 sidewalks over a railroad yard adjacent to (or in) the Bethlehem Steel Corporation mill in the City of Bethlehem.

Bridge Considered Historic By Survey: Yes


This bridge is tagged with the following special condition(s): Available

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Photo Galleries and Videos: Lynn Avenue Bridge

 
View Photo Gallery
Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Photo Gallery
Bridge Photo-Documentation
Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Video
Northbound Crossing of the Bridge
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.
View Video
Southbound Crossing of the Bridge
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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Maps and Links: Lynn Avenue Bridge

This historic bridge has been demolished. This map is shown for reference purposes only.

Coordinates (Latitude, Longitude):
40.610830,-75.349450

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