About this property
Bridge No. 6679 is a 314-foot-long (96 m) bridge that carries State Highway 76 over the South Fork of the Root River near Houston, Minnesota. Built in 1949 at a cost of $118,000, it was a step in the evolution of I-beam bridges in Minnesota. In the 1920s, steel I-beams of 24 inches (61 cm) deep were standard. Later, the depth increased to 30 inches (76 cm), then eventually to 36 inches (91 cm). This was made possible by advancements in steel mill technology. A 24-inch I-beam can support a span about 40 feet (12 m) long, whereas a 36-inch I-beam can support a span up to about 70 feet (21 m). This meant fewer piers were required to support the bridge. Bridge No. 6679 also features a cantilevered plan, where a projecting member is supported at only one end. The center span is 100 feet (30 m) long, with a 65-foot (20 m) section in the middle pinned at each end to cantilevered arms mounted on the piers. The bridge is also notable for the Modernist design of its concrete railings. The clean lines, lack of surface ornamentation, and Modernist architecture exemplifies the Minnesota Highway Department's post-World War II style. The bridge was rehabilitated in 2012 by the Minnesota Department of Transportation. The bridge deck was replaced, as well as the expansion joints, bearings, and wingwalls. The railings were deteriorated, so new railings were designed which replicated the style of the old railings while keeping up with current safety standards.
Location
Categories
Property data from the National Register of Historic Places, National Park Service (public domain).
Description adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.
Everything a full report reveals about Bridge No. 6679
This page lists Bridge No. 6679. A full Aubrey report for an address near it pulls together this listing alongside battlefield records, land patents, and every other historical record within a chosen radius:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Questions about this property
When was Bridge No. 6679 listed on the National Register?
Bridge No. 6679 was listed on the National Register of Historic Places on July 19, 2011.
What type of historic resource is Bridge No. 6679?
Bridge No. 6679 is classified as a structure in the National Register of Historic Places.
What is the period of significance for Bridge No. 6679?
The period of significance for Bridge No. 6679 is recorded as the modern era, specifically around 1949.
Can I research the history near Bridge No. 6679?
Yes. Aubrey Research reports search National Register listings, battlefield records, land patents, and other primary historical sources within any radius of a US address. A report for an address near Bridge No. 6679 will include this listing and all other historical records in the area.
More in Houston County
Historic places, battles, and census history across Houston County.
Explore HoustonCounty ›More historic places in Minnesota
Browse all historic places in Minnesota.
View Minnesotahistoric sites ›Minnesota history
Colonial settlement, territorial period, and statehood narrative.
Minnesotahistory ›Research the history near this site
An Aubrey US report for an address near Bridge No. 6679 will include this listing alongside battlefield records and other historical sources within your chosen radius.