Multi-Phase Project: Phase

Masontown Bridge

The Masontown Bridge project involved the replacement of an existing 11-span, two lane steel truss structure with a new 1,700-LF 7-span four lane plate girder bridge.
location
Masontown
,
Pennsylvania
ESTIMATED VALUE
$49.8M
owner
PennDOT
Completion date
08/2015
general contractor
Brayman Construction Corporation
Market
Transportation
Multi-Phase Project: Phase

Masontown Bridge

Masontown Bridge carries SR 21 over the Monongahela River and the Norfolk Southern Railroad between Masontown, Fayette County, PA and Monongahela Township, Greene County, PA.  The Masontown Bridge project involved the replacement of an existing 11-span, two lane steel truss structure with a new 1,700-LF 7-span four lane plate girder bridge.

Piers 3 and 4 are founded on eight-each, nine-foot diameter caissons over 75-feet in depth. To aid construction, installation of two cofferdams in the Monongahela River was necessary. All other bridge substructure units are founded on smaller diameter caissons of varying sizes.

Additional scope included installation of a 327-LF precast reinforced wall reaching a height of 40-feet to support the roadway approach at Abutment 2, as well as the construction of various other retaining walls. All construction was staged with the existing bridge remaining open to traffic; consequently, no detours were required. Furthermore, our team coordinated with local entities, including daily communication with the staff of the Hatfield Power Plant adjacent to the project site, to ensure access in and out of the plant.

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Masontown Bridge

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