Penobscot Bridge, Spanning Penobscot River at Route 15, Bangor, Penobscot County, ME

Significance: This bridge is the last remaining Baltimore (Petit) through-truss bridge in the state. The current structure represents three different phases of construction: Phase 1 - the center span was erected in 1902 by the American Bridge Co. to replace the center wooden covered section lost in spring flooding; Phase 2 - the spans at either end of the center span were added in 1911 by the Boston Bridge Works Co. to replace the remaining wooden covered bridge section; and Phase 3 - three pony trusses (no longer extant) were erected at the west end of the existing structure; replaced with a steel girder truss section in 1934 and 1963.

Unprocessed Field note material exists for this structure: N1503

Survey number: HAER ME-52

Building/structure dates: 1902 Initial Construction

Building/structure dates: 1911 Subsequent Work

Building/structure dates: 1934 Subsequent Work

Building/structure dates: 1969 Subsequent Work

Building/structure dates: 1963 Subsequent Work

vehicular bridges steel girder bridges metal truss bridges transportation bridge construction bangor penobscot bridge penobscot bridge penobscot river penobscot county maine baltimore trusses pony trusses stone piers masonry piers girder bridges american bridge company boston bridge works erik w carson justine christianson groton bridge company historic american engineering record ultra high resolution high resolution library of congress

1969 - 1980

Library of Congress

http://www.loc.gov/

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