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Birdsboro Bridge

Birdsboro Viaduct

   
                  


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Bridge Documented: May 30, 2010
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Key Facts
Bridge Name Facility Carried / Feature Intersected Location Structure Type Construction Date and Builder/Engineer
! Birdsboro Bridge
Birdsboro Viaduct
PA-82 (Center Road, Furnace Street) Over Schuylkill River and Railroad (Norfolk Southern) Birdsboro: Berks County, Pennsylvania Concrete Open Spandrel Deck Arch, Fixed and Approach Spans: Concrete Deck Girder, Fixed 1927 By Builder/Contractor: Whitaker and Diehl of Harrisburg, Pennsylvania and Engineer/Design: Charles F. Sanders
Technical Facts
Rehabilitation Date Main Span Length Structure Length Roadway Width Main Spans Approach Spans NBI Number
1980 108 Feet (32.9 Meters) 1123 Feet (342.3 Meters) 25 Feet (7.6 Meters) 9 10 6034501300531

Historic Significance Rating (HSR)

Primary Photographer(s): Nathan Holth and Rick McOmber

This Bridge's Future Is At Risk!

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

This historic bridge is being replaced and will be demolished PennDOT!

This bridge is a very long example of a concrete arch bridge at over 1000 feet in length and with nine main spans. The bridge is particularly a unique structure because it also has a bridge ramp that serves a dead-end road called Bridge Street and intersects at a perpendicular angle at the main bridge. The main bridge has had its deck and railings replaced, but this ramp retains original concrete balustrade railings, and the real treasure: a genuine original and unaltered brick deck, a real rarity!

The builder of the bridge, Whittaker and Diehl bid to build the bridge at $286,964. They were able to bid low because their equipment was already nearby working on the Mineral Springs Viaduct. See this news article. The final cost was listed as $350,000. The previous bridge at this location was a wooden covered bridge that burned May 14, 1926. This news article has details.

Sadly, this bridge has not been maintained over the years. The bridge is listed in the National Bridge Inventory as having considerable superstructure and substructure problems, however the bridge was too overgrown for HistoricBridges.org to assess this deterioration for rehabilitation potential. The historic bridge has become extremely overgrown. Driving down the Bridge Street Ramp might be compared to driving into a jungle, getting decent photos showing a significant portion of the main bridge is nearly impossible if leaves are on the trees. These aspects of deferred maintenance may have also led to a decreased public awareness and appreciation of this impressive historic bridge. It is hard to appreciate a historic bridge when you cannot see the elements that make it historic, notably the arches below the deck. The bridge is now scheduled for replacement and demolition, even though the replacement bridge is to be built on a new alignment out of the way of the historic bridge.

The Historic Bridge Inventory, unbelievably, listed this bridge as ineligible for the National Register of Historic Places. This finding is not in line with how other states have conducted their historic bridge inventories, and it also does not recognize the significant engineering and construction achievement represented in a bridge that exceeds 1000 feet and was designed by county engineers. This finding also does not recognize how rare and unique a bridge from this period in history with the 90 degree intersecting Bridge Street Ramp truly is. The finding of ineligibility does not represent current populations and trends with historic bridges in Pennsylvania, and it does not acknowledge the noteworthy aspects of this bridge. A well-written nomination form likely could have been successful in getting the bridge listed on the National Register of Historic Places. The HistoricBridges.org Historic Significance Rating more accurately reflects the bridges as observed during a HistoricBridges.org field visit to the bridge.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The 9-span, 1,123' long ribbed, open spandrel arch bridge was built in 1927. The spandrel columns are plain, and the deep cantilevered deck sections are supported on console-like brackets. There is a ramp composed or reinforced concrete deck girder spans down to the north bank of the river on the upstream side of the bridge. It retains the original balustrades, but those on the bridge proper were replaced with modern barriers in 1980. The bridge is a later and undistinguished example of a technology that is well represented in the county and state. There are 12 open spandrel arch bridges in Berks County dating from 1913 through 1955. Neither the bridge nor its setting are historically or technologically distinguished.

Discussion of Surrounding Area

The bridge carries a 2-lane state highway over the Schuylkill River and the Reading Railroad main line on the north edge of the borough of Birdsboro. When built, it also crossed the Schuylkill Navigation Co. canal (abandoned). There are ruins of a lock near by. There are undistinguished and altered late 19th and 20th century buildings at the south end of the bridge.

Bridge Considered Historic By Survey: Yes

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Photos and Videos: Birdsboro Bridge

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