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See photos of rust, deterioration on the Sagamore, Bourne bridges

Bourne Bridge, underside of Pier 3 deck joint.
Bourne Bridge, underside of Pier 3 deck joint.US Army Corps of Engineers
Sagamore Bridge, fully cracked weld along the top flange cover plate repair.
Sagamore Bridge, fully cracked weld along the top flange cover plate repair. US Army Corps of Engineers
US Army Corps of EngineersBourne Bridge, Span 3, west truss, west gusset plate at U0 with thick pack rust along both edges deforming the gusset plate.
US Army Corps of EngineersBourne Bridge, Span 3, west truss, west gusset plate at U0 with thick pack rust along both edges deforming the gusset plate. US Army Corps of Engineers
Sagamore Bridge, advanced deterioration to the west gusset plate at truss joint L7 of the east truss in span 3.
Sagamore Bridge, advanced deterioration to the west gusset plate at truss joint L7 of the east truss in span 3. US Army Corps of Engineers
Bourne Bridge, Span 4, west truss joint L8: Angle welded to the interior face of the east gusset plate (considered a FSD).
Bourne Bridge, Span 4, west truss joint L8: Angle welded to the interior face of the east gusset plate (considered a FSD). US Army Corps of Engineers
Bourne Bridge, dislodged and missing compression seal at Pier 6 deck joint.
Bourne Bridge, dislodged and missing compression seal at Pier 6 deck joint.US Army Corps of Engineers
Sagamore Bridge, bent anchor bolt at the south abutment out of plumb 1/4".
Sagamore Bridge, bent anchor bolt at the south abutment out of plumb 1/4". US Army Corps of Engineers
Sagamore Bridge, deteriorated joint header at south abutment. Repaired in 2018.
Sagamore Bridge, deteriorated joint header at south abutment. Repaired in 2018. US Army Corps of Engineers
Bourne Bridge, Span 2, east truss, west gusset plate at U6': section loss with active corrosion along the interface with the sidewalk curb channel.
Bourne Bridge, Span 2, east truss, west gusset plate at U6': section loss with active corrosion along the interface with the sidewalk curb channel. US Army Corps of Engineers
Sagamore Bridge, pack rust along the north edge of truss vertical member deforming the gusset plate at truss joint U0' of the east truss.
Sagamore Bridge, pack rust along the north edge of truss vertical member deforming the gusset plate at truss joint U0' of the east truss. US Army Corps of Engineers
Bourne Bridge, Beam BM1, chamber 2 of the south abutment: The bearing area is undermined resulting in a 33% reduction in bearing area.
Bourne Bridge, Beam BM1, chamber 2 of the south abutment: The bearing area is undermined resulting in a 33% reduction in bearing area.US Army Corps of Engineers
Bourne Bridge, Span 5, west truss diagonal L8U7: Widespread 1/16" deep pitting.
Bourne Bridge, Span 5, west truss diagonal L8U7: Widespread 1/16" deep pitting. AGM
Sagamore Bridge, impact damage to the east wind chord.
Sagamore Bridge, impact damage to the east wind chord.US Army Corps of Engineers
Bourne Bridge, deteriorated deck of north abutment.
Bourne Bridge, deteriorated deck of north abutment. US Army Corps of Engineers
Bourne Bridge, Span 2, west truss, east gusset plate at L7' with holes along the top of the lower chord member.
Bourne Bridge, Span 2, west truss, east gusset plate at L7' with holes along the top of the lower chord member. US Army Corps of Engineers
Bourne Bridge, North suspender at west truss joint 13: Area of stage IV corrosion.
Bourne Bridge, North suspender at west truss joint 13: Area of stage IV corrosion. US Army Corps of Engineers