OFFICIAL NAME:
Allegheny County Bridge No. 1 Ohio River
Sewickley Bridge
OTHER DESIGNATION:
ambr568-14x
LOCATION:
Moon Twp - Sewickley
USGS 7.5" Topo Quad - UTM Coordinates:
Ambridge - Zone 17; 0568 4487
CARRIES:
BETWEEN:
-- Ohio River Blvd [PA65]
-- [PA51]
CROSSES:
-- Chadwick Av; NS RR [Conrail]
-- Ohio River at Mile 11.8
-- CSX RR [PLE RR]
TYPE OF CONSTRUCTION / DESIGN:
steel cantilever through truss
LENGTH OF MAIN SPAN:
724.0 ft est
TOTAL LENGTH (including longest elevated ramp):
HEIGHT OF DECK:
YEAR ERECTED / ENGINEER:
1911, County of Allegheny
J. G. Chalfant, county engineer
Fort Pitt Bridge Works, superstructure contractor
replaced 1981
ADDITIONAL INFO:
Of the four finials which once topped the bridge's highest points, one is in a park at Broad St and Walnut St in Sewickley, one is in the parking lot of the old Sewickley train station at Chadwick Av and Chestnut St, and one is at Station Square in Pittsburgh near the Smithfield St Bridge south approach.
In the park at Sewickley, a bronze keystone-shaped plaque from the bridge now rests on a marble base in front of one of the finials from the top of the old bridge. The text reads:
BRIDGE NO 1
OHIO RIVER
ERECTED BY
ALLEGHENY COUNTY
1909-11
------------------------------
I. K. CAMPBELL
J. D. O'NEIL
S. J. TOOLE
COUNTY COMMISSIONERS
R. J. CUNNINGHAM
COUNTY CONTROLLER
J. G. CHALFANT
COUNTY ENGINEER
------------------------------
FORT PITT BRIDGE WORKS
PITTSBURG, PA.
CONTRACTOR SUPERSTRUCTURE
ADAM LAIDLAW & CO
CONTRACTOR SUBSTRUCTURE
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view page - More info on the 1981 Sewickley Bridge over the Ohio River
view page - Fieldnotes on the 1981 Sewickley Bridge over the Ohio River
view page - Pittsburgh Press article on the 1911 Sewickley Bridge over the Ohio River
view page - Coraopolis Record and the Sewickley Herald article on the 1981 Sewickley Bridge over the Ohio River
view page - Coraopolis Record and the Sewickley Herald article on the designer of the 1981 Sewickley Bridge over the Ohio River
FIELD CHECKED:
INFO SOURCES:
