Mianus River Railroad Bridge
A selected, source-based research collection for New Haven and Fairfield counties. Includes credited photographs where reusable images were located, historical interpretation and links to supporting records. It is a growing inventory, not an exhaustive survey. Photographs retain their individual dates and reuse terms; images do not establish present access conditions.

id: CT071-S01
title: Mianus River Railroad Bridge: history and engineering bibliography
kind: Sources & research leads
date: Source reviewed September 2026
institution: Mianus River Railroad Bridge
summary: Supporting source for the collection’s history, chronology and research notes. A movable bridge shows how rail traffic and navigation shared a constrained river crossing.
url: https://en.wikipedia.org/wiki/Mianus_River_Railroad_Bridge
credit: Mianus River Railroad Bridge
notes: External source; the full publication remains with its publisher. The archive provides an original educational summary and a link. See the collection history for the claims supported by this record.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: CT071-P01
title: VIEW OF MIANUS RIVER RAILROAD BRIDGE LOOKING NORTHEAST FROM THE REMAINS OF THE COS COB POWER PLANT COALING DOCK. THE BRIDGE IS A ROLLING LIFT BASCULE TYPE BUILT IN 1894-1895. HAER CONN,1-GREWI,15A-21
kind: Photographs
date: 1993
institution: Mianus River Railroad Bridge
summary: Mianus River Railroad Bridge, viewed northeast from the former Cos Cob coaling dock, 1993.
url: https://commons.wikimedia.org/wiki/File:VIEW_OF_MIANUS_RIVER_RAILROAD_BRIDGE_LOOKING_NORTHEAST_FROM_THE_REMAINS_OF_THE_COS_COB_POWER_PLANT_COALING_DOCK._THE_BRIDGE_IS_A_ROLLING_LIFT_BASCULE_TYPE_BUILT_IN_1894-1895._HAER_CONN,1-GREWI,15A-21.tif
credit: Jet Lowe / Historic American Engineering Record / Public domain
notes: Public domain U.S. National Park Service photograph (PD-USGov-NPS). LOC: No known restrictions on images made by the U.S. Government. Image supplied at web resolution; no editorial changes to the source image. Original repository record: https://www.loc.gov/pictures/item/ct0568.photos.383646p
file: images/mianus_bridge-33842128.jpg
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: https://upload.wikimedia.org/wikipedia/commons/3/3f/VIEW_OF_MIANUS_RIVER_RAILROAD_BRIDGE_LOOKING_NORTHEAST_FROM_THE_REMAINS_OF_THE_COS_COB_POWER_PLANT_COALING_DOCK._THE_BRIDGE_IS_A_ROLLING_LIFT_BASCULE_TYPE_BUILT_IN_1894-1895._HAER_CONN%2C1-GREWI%2C15A-21.tif
document_file: 

id: CT071-P02
title: Cos-Cob Bridge, Miamus River, looking west, by Whitney, Beckwith & Paradice (cropped)
kind: Photographs
date: circa 1865–1870 (source uncertain)
institution: Mianus River Railroad Bridge
summary: Earlier Cos Cob railroad bridge over the Mianus River, looking west, approximately 1865–1870.
url: https://commons.wikimedia.org/wiki/File:Cos-Cob_Bridge,_Miamus_River,_looking_west,_by_Whitney,_Beckwith_%26_Paradice_(cropped).jpg
credit: Whitney, Beckwith & Paradice / New York Public Library / Public domain
notes: Public domain in the United States (source file license). Image supplied at web resolution; no editorial changes to the source image. This nineteenth-century photograph depicts an earlier railroad bridge, not the later bascule bridge discussed in the collection history. Original repository record: https://catalog.nypl.org/record=b11707687
file: images/mianus_bridge-49478113.jpg
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: https://upload.wikimedia.org/wikipedia/commons/f/ff/Cos-Cob_Bridge%2C_Miamus_River%2C_looking_west%2C_by_Whitney%2C_Beckwith_%26_Paradice_%28cropped%29.jpg
document_file: 

id: CT071-S02
title: National Register nomination: Mianus River Railroad Bridge
kind: Sources & research leads
date: Source reviewed September 2026
institution: Mianus River Railroad Bridge
summary: The nomination describes the bridge’s rolling-lift mechanism and dates its construction to 1904. Its condition descriptions are historical survey evidence, not a current inspection.
url: https://npgallery.nps.gov/NRHP/GetAsset/NRHP/87000845_text
credit: National Park Service
notes: External source; the full publication remains with its publisher. The archive provides an original educational summary and a link. See the collection history for the claims supported by this record.
file: 
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: 
document_file: 

id: ED-H2-HT-SP-027
title: Mianus River Bridge, Cos Cob, HAER photograph 9
kind: Photographs
date: 1977-04
institution: Mianus River Railroad Bridge
summary: Aerial view along tracks crossing Mianus River. Boucher's April 1977 photograph records the railroad bridge at Cos Cob, identified as Section 9108, milepost 29.91.
url: https://www.loc.gov/pictures/item/ct0338.photos.024043p/
credit: Jack E. Boucher / Library of Congress
notes: HAER CT-11-9 / CONN,5-NEWHA,37--9. Caption evidence: https://tile.loc.gov/storage-services/master/pnp/habshaer/ct/ct0300/ct0338/data/ct0338cap.pdf HAER CT-11-9 visible; distinct from side-oblique SP-036. Display copy optimized for the web with proportional resizing and compression. The linked repository identifies the original image. Reuse: US government photograph; caption sheet expressly says photographs are not subject to copyright.
file: images/ED-H2-HT-SP-027.webp
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: https://cdn.loc.gov/service/pnp/habshaer/ct/ct0300/ct0338/photos/024043pv.jpg
document_file: 

id: ED-H2-HT-SP-036
title: Mianus River railroad bridge, HAER photograph 10
kind: Photographs
date: 1977-04
institution: Mianus River Railroad Bridge
summary: Oblique aerial view of the Mianus River railroad bridge and harbor. A second April 1977 HAER view records the Mianus River railroad bridge at Cos Cob.
url: https://commons.wikimedia.org/wiki/File:Mianus_River_Bridge,_Cos_Cob_(Fairfield_County,_Connecticut).jpg
credit: Jack E. Boucher / Library of Congress / Wikimedia Commons
notes: CT-11-10, source legacy LOC image 024044pv.jpg. This is distinct from CT-11-9. Avoid a different Commons image called 'Mianus River Bridge crop of HAER ...37-3': that crop depicts the I-95 bridge. Distinct angle from SP-027; bridge and movable span visible. Display copy optimized for the web with proportional resizing and compression. The linked repository identifies the original image. Reuse: Public domain, official NPS/HAER photograph; explicit Commons tag and HAER caption sheet.
file: images/ED-H2-HT-SP-036.webp
text_file: 
accessed: 2026-09-12
license_url: 
external_image_url: https://upload.wikimedia.org/wikipedia/commons/3/33/Mianus_River_Bridge%2C_Cos_Cob_%28Fairfield_County%2C_Connecticut%29.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=thumbnail_unscaled
document_file: 