|Bridge Name||Facility Carried / Feature Intersected||Location||Structure Type||Construction Date and Builder/Engineer|
Currie Road Bridge
||Currie Road (TR-318) Over Muddy Creek||Rural: Butler County, Pennsylvania||Concrete Closed Spandrel Deck Arch, Fixed||1909 By Builder/Contractor: Unknown|
|Main Span Length||Structure Length||Roadway Width||Main Spans||NBI Number|
|30 Feet (9.1 Meters)||34 Feet (10.4 Meters)||13.8 Feet (4.2 Meters)||1||10723203180060|
This bridge was built in 1909 and as such is an extremely early surviving example of a concrete arch bridge in Pennsylvania. The bridge is also noted for its excellent historic integrity with no major alterations. The bridge appears structurally to be in decent overall condition, although the asphalt overlay on the bridge is a problem. Unless they are sealed to the bridge perfectly (as in water-tight), overlays do nothing but trap moisture underneath themselves and increase rate of deck deterioration. The fact that there is healthy grass growing at the edges of the roadway on this bridge demonstrates the overlay is not sealed and definitely not water-tight. Projects like removing or replacing an overlay with something water-tight and removing dirt and grass from a bridge are low-cost projects that will greatly prolong the life of a bridge and thus prevent having to spend a lot of tax payer money on a costly new bridge which would also be ugly and have no historic value.
This bridge has enormous railings, that are both tall and massive. This is especially unusual given the old age of this bridge, having been built in a period where metal truss bridges often had little more than a hub guard railing.
Information and Findings From Pennsylvania's Historic Bridge Inventory
Discussion of Bridge
The one span, 34'-long and 17' wide reinforced concrete deck arch bridge built in 1909 is supported on concrete abutments and finished with concrete flat paneled parapets. The bridge ranks as one of the earliest complete examples of the technology in the region, and it is historically and technologically significant based on its date of construction, and completeness. Reinforced concrete was first used for bridges in Pennsylvania in the mid 1900s, and it quickly became a popular material. Complete deck arch bridges from before 1910 are not common in this region of the state. This example is representative of the detailing typical of the earliest examples.
Discussion of Surrounding Area
The bridge carries 1 lane of a township road over a stream in a sparsely developed, wooded setting that does not have historic district potential.
Bridge Considered Historic By Survey: Yes
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