Small post card of the aerial lift bridge with the span up and an outbound lake vessel in the canal. On Monday, July 1, 1929, the suspended car made its last trip across the canal. The bridge's modification to operate with a lift span began on April 8, 1929, with a low bid of $448,000 by the Kansas City Bridge Company. The Aerial Lift Bridge was first operated on March 19, 1930. During the shipping season it makes about 25 lifts a day.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
View of Duluth's hillside from just shy of Sixth Avenue West on the left and Fourteenth Avenue East on the far right half-way up the edge. Houses in the Kenwood neighborhood are clustered at the far right. To the left of Kenwood is the College of St. Scholastica with dominant Tower Hall. Drop straight down from the college to the Peace Church built in 1959. The airbase housing cluster called Capehart on Arrowhead Road that was later sold and developed into Aspenwood Condominiums is beyond the college with the Cook Home at the top middle of the photograph.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
The aerial lift bridge is owned and operated by the City of Duluth on Congressional permit. The Ship Canal and grounds are under the authority of the Lake Superior Area Office of the U.S. Army Corps of Engineers. Minnesota Point, also called Park Point, is a well-known Duluth neighborhood that has a population of about 1,500; it is a major year-round recreational area with beaches and an airport. You can see the light edge of the sand beach parallel to the edge of the photograph. Minnesota Point is located at the western tip of Lake Superior, at the mouth of its largest tributary, the St. Louis River. Minnesota Point, seven miles long and averaging 500 feet wide, is geologically part of a continuous, sandy, bay mouth bar that stretches between Duluth and Superior, Wisconsin. The middle of the bar is submerged, creating the natural entry that separates Minnesota Point on the northwest from Wisconsin Point on the southeast. This bar was formed by two processes: primarily by sands carried from the South Shore and deposited by lake currents, and secondarily by sediment deposited by the St. Louis and Nemadji rivers. There are erosion and flood problems on the two sides of Minnesota Point. Most of the Minnesotas Lake Superior shore consists of rock and red clay. The vast sandy beach of Minnesota Point is not common. Shifts in dunes and breaks in dune line can occur in just a few hours. If a blow hole forms in a dune line, up to 3,000 cubic feet of sand can shift during a single storm. Vegetation can help prevent dune erosion. Dunes are extremely important in controlling wind erosion on Minnesota Point. To protect the dunes, it is essential to control pedestrian traffic and prohibit the use of vehicles. If it is necessary to cross dunes, the use of designated trails with boardwalks or bark mulch can minimize damage.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
The Chicago Shipbuilding Company of Chicago, a subsidiary of the American Shipbuilding Company, built the steamer William E. Cory for the Pittsburgh Steamship Company in 1904. The vessel dimensions are 569' X 56' X 31'. She sailed from Chicago on her maiden voyage August 12, 1905 bound for Duluth to load iron ore. The aerial bridge was new. Bids were opened March 25, 1901, but only one was received. The Duluth Canal Bridge Company was awarded the contract but abandoned the work. In February 1904, the Modern Steel Structural Company of Waukesha, Wisconsin was issued a contract. Work began July 20, 1904. On February 23, 1905, with local dignitaries at hand, the bridge was first operated. Regular service began the next day according to newspaper accounts. The city engineer's report for 1905 stated that the bridge was "completed and commenced operation on May 5, 1905, and a few problems were corrected in running the bridge over the next few days." The Aerial bridge was completed in February 1905. The aerial bridge transporter or gondola or transfer car roadway was 17 feet by 50 feet with sidewalks seven feet by 50 feet, the cabins were 30 feet long. The U.S. Army Corps of Engineers office building with flag above it was built in 1906. Also visible in the image are the National Biscuit Company 517 Lake Avenue South, Blanchet Hotel 520 Lake Avenue South, and Wieland Flats 502-512 St. Croix Avenue
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
This carbon copy of a Claude Turner document is an historical overview about the bridge re-design. It includes discussion of contracts, alternate design, and petitions. Also includes exhibits A, B, and C from interested parties communicating with the Duluth City Council.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
Fifty-second Congress First Session Executive Document Number 80 United States Senate
Date Created:
1892-04-18
Description:
Thirty-one page government document, beginning with a letter form the Secretary of War, in response to Senate resolution of April 12, 1892, relative to the proceedings of the board of officers convened to consider the construction of a bridge in Duluth. This document is discussing placing a bridge over the Duluth ship canal where a bridge has never existed. The document uses the language "Aerial Lift Bridge" which must have been a design under consideration. In fact, the Aerial Ferry Bridge, or Aerial Transporter Bridge was the initial bridge constructed in 1904-1905. It wasn't until 1929 that the first bridge was remodeled with a lift span.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
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.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections