Pennsylvania Turnpike Allegheny River Bridge 1951-2010 - Bridges and Tunnels of Allegheny County and Pittsburgh, PA

View south from Harmar with new bridge under construction beyond

Elevation drawing looking downstream

More detail photos

OFFICIAL NAME:
WB-443; MP 48.00

OTHER DESIGNATION:
Pennsylvania Turnpike Allegheny River Bridge

LOCATION:
Harmar - Plum

LATITUDE, LONGITUDE:
40.538008,-79.822192

USGS 7.5" Topo Quad - UTM Coordinates:
New Kensington West - Zone 17; 0599 4487

CARRIES:
Pennsylvania Turnpike, Interstate 76; milepost 47.7 - 48.2

BETWEEN:
-- PA Turnpike (Harmar) on right descending bank of Allegheny River
-- PA Turnpike (Plum) on left descending bank of Allegheny River

CROSSES:
(RDB to LDB) Freeport Rd [Old PA28], NS RR (Conrail Conemaugh Div), Allegheny River at Mile 14.2, Fourteen Mile Island, AVRR (old PRR Allegheny Valley)

TYPE OF CONSTRUCTION / DESIGN:
subdivided Warren deck truss

LENGTH OF MAIN SPAN:
500.0 ft clearance channel span

TOTAL LENGTH (including longest elevated ramp):
2,179 ft (also listed as 2,186 ft)

HEIGHT OF DECK:
64.0 ft clearance, deck is approx. 100 feet above river level
Lock and Dam No. 2, Highland Park, normal pool level 721.0 ft

YEAR ERECTED / ENGINEER:
1949-51, Modjeski and Masters engineers
Pennsylvania Turnpike Commission, current owner

ADDITIONAL INFO:
Replaced 2010.

FIELD CHECKED:
20-Oct-1999

INFO SOURCES:
field check; USACE Allegheny River Nav. Charts

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Introduction -- Nearby Structures

Page created: 01-Dec-1999
Last modified: 08-Nov-2009; 29-Feb-2016