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| Home > All By Location regional map > Ambridge > Beaver Rd over Little Sewickley Creek | |||
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Downstream arch face More detail photos OFFICIAL NAME: Allegheny Co. Bridge No. 1 Little Sewickley Creek OTHER DESIGNATION: Beaver Rd over Little Sewickley Creek ambr567-3 LOCATION: Edgeworth USGS 7.5" Topo Quad - UTM Coordinates: Ambridge - Zone 17; 0567 4489 CARRIES: Beaver Rd BETWEEN: -- Little Sewickley Creek Rd -- Shields Ln CROSSES: -- Little Sewickley Creek TYPE OF CONSTRUCTION / DESIGN: stone arch -- center section concrete locally-quarried sandstone outer spandrel wall: rock-faced coursed ashlar upper walls and parapets: dressed coursed ashlar arch ring: dressed voussoirs in Roman arch LENGTH OF MAIN SPAN: 27ft TOTAL LENGTH (including longest elevated ramp): 75ft 45 ft wide, between parapets HEIGHT OF DECK: YEAR ERECTED / ENGINEER: 1841, Charles Davis Widened and relined 1918, John G. Chalfant ADDITIONAL INFO: Two early stone bridge carried the important Beaver Rd from Pittsburgh. To the west, what may be the oldest remaining bridge (1827) in Allegheny County spans Big Sewickley Creek at the boundary of Beaver County. The original part of this crossing of Little Sewickley Creek dates from 1841, during the tenure of Charles Davis as County Engineer. Both bridges were widened and relined 1918-19 by John G. Chalfant, the successor to Davis. Chalfant had worked under Davis and the design of the bridges as rebuilt has the vocabulary of Davis. In years following these two reconstructions, Chalfant would change to his own design featuring stepped voussoirs. Most of the County's other early stone arch bridges are pure in the sense that the stone voussoirs are used across the full width of the span. Here, however, only the outer course of the arch ring is stone -- the center section is lined in concrete. FIELD CHECKED: 7-Oct-2002 INFO SOURCES: field check Submit info or inquiry - share some facts or ask a question. Introduction -- Nearby Structures Page created: 26-Nov-2002 Last modified: 26-Nov-2002 |
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