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Aerial Lift Bridge: Lake Avenue South Bridge Over Duluth Ship Canal for the City of Duluth, Minnesota

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Title	Aerial Lift Bridge: Lake Avenue South Bridge Over Duluth Ship Canal for the City of Duluth, Minnesota
Creator	Harrington Howard and Ash Consulting Engineers
Description	Set of 37 sheets of architectural drawings accepted for the City of Duluth by Samuel F. Snively, Mayor, and John Wilson, City Engineer, Plans Accompanying Specifications of January 1929. Technical drawings with varying degrees of legibility. There is only one elevation in the set; Sheet 1. The original bridge was the Aerial Bridge constructed in 1904-1905. The bridge was modified in 1929 with a lift span and subsequently called the Aerial Lift Bridge. These plans are highly technical and were designed for the use of engineers and specialty contractors. Each drawing indicates that certain features of the structure have been revised. This set appears to represent the final revision. The Lift Bridge was designed by Harrington, Howard and Ash Consulting Engineers, Kansas City and New York. Patented in the United States from 1909-1925.
Date of Creation	1929-03-20
Dimensions	61 x 91.4
Minnesota Reflections Topic	Architecture
Item Type	Still Image
Item Physical Format	Architectural drawings (visual works)
Formal Subject Headings	Movable bridges Bridges Minnesota
Locally Assigned Subject Headings	Aerial Lift Bridge; Aerial Lift Bridge specifications; Ship Canal; Aerial Bridge
Minnesota City or Township	Duluth
District	Ship Canal
Minnesota County	St. Louis
State or Province	Minnesota
Country	United States
Contributing Organization	Northeast Minnesota Historical Center, University of Minnesota Duluth Library, 416 Library Drive, Duluth, MN 55812-3001; http://libguides.d.umn.edu/nemhc
Rights Management	Contact NEMHC for permission to use image
Local Identifier	2166.6 S3175 A54
Fiscal Sponsor	Grant provided to the Minnesota Digital Library Coalition through the Library Services and Technology Act (LSTA) and the State Library Services and School Technology unit of the Minnesota Department of Education
OCLC number	688657079

Title	Cover Sheet List of Drawings
Creator	Harrington Howard and Ash Consulting Engineers
Description	Cover Sheet
Date of Creation	3/20/1929
Dimensions	61 x 91.4
Minnesota Reflections Topic	Arts and architecture
Item Type	Still Image
Item Physical Format	architectural drawing blueprint
Locally Assigned Subject Headings	Aerial Lift Bridge; Aerial Lift Bridge specifications; Ship Canal; drawing; Aerial Bridge
Minnesota City or Township	Duluth
District	Ship Canal
Minnesota County	St. Louis
State or Province	Minnesota
Country	United States
Contributing Organization	Northeast Minnesota Historical Center; http://www.d.umn.edu/lib/nemhc/
Rights Management	Contact NEMHC for permission to use image
Local Identifier	2166.6 S3175 A54
MDL Identifier	umn81174
Fiscal Sponsor	Grant provided to the Minnesota Digital Library Coalition through the Library Services and Technology Act (LSTA) and the State Library Services and School Technology unit of the Minnesota Department of Education
Transcript	■MV mmmmmaM MAKI^I1MGT®N M®WA \W) AN© ASM- CONSOLTTO© EOT. 'AWA® CITY - MEW Y«i 1 GENERAL PLAN A HO ELEVATION 2 revisions or present utilities & structures 3a4 NORTH AMD SOUTH TOWER' FOOTINGS 5 TOWER SPAN DECK NORTH APPROACH 5A BATTERYar. CHARGING P00M5 3 EQUIPMENT 6 TOWER SPAN DECK SOUTH APPROACH 7 NORTH APPROACH 8 SOUTH APPROACH 9 FLOOR SYSTEM-LIFT SPAN 10 FLOOR SYSTEM-LIFT SPAN 11 LIFT SPAN-END SECTION & LIFTING GIRDER 12 LIFT SPAN - INTERMEDIATE SECTION ! LIFT SPAT1 - CEMTER SECTION 14 LIFT SPAM - PORTAL &. SWAY FRAMES 15 MACHIh: 16 MACHINERY HOUSE - lOQR 17 MACHINERY HOUSE - STAIPWAYS IS NACHINERY HOUSE - DETAILS RAISING U3S LIST OF DRAWINGS 20 MARKING DIAGRAM- GRATING & HANDRAIL- SHEAVE HOODS 21 TOP SECTION OF TOWERS -SHEAVE GIRDER 22 MIDDLE SECTION OF TOWERS- f & e OF NEW 23 MIDDLE SECTION OF TOWERS- f&3 OF NEW 24 MIDDLE SECTION OF TOWERS - h & j OF NEW 25 BOTTOM SECTION OF TOWERS & SHOES 26 DETAILS FOR EXTENSION OF PRESENT TOWER COLUMNS 27 REVISIONS TO OVERHEAD TPUS5 26 COUNTERWEIGHTS 29 GENERAL LAYOUT OF MACHINERY 30 machine ;. w 5i M*CHINE.J?Y ON LIFT 3 MACHINERY ON TOWEB 33 TROLLEY BRZAKZXS 14 WIPING DIAGPAM 35 BATTERY X MOTOR DUTY CURVES PLAMS ACCOMPANY INQ SPECIFICATIONS UARYNi929

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Aerial Lift Bridge: Lake Avenue South Bridge Over Duluth Ship Canal for the City of Duluth, Minnesota

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