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Colorado Street Bridge (Saint Paul, Minnesota)

Arch bridges in the United StatesBrick bridges in the United StatesBridges completed in 1888Bridges in Saint Paul, MinnesotaFormer road bridges in Minnesota
Midwestern United States bridge (structure) stubsMinnesota Registered Historic Place stubsMinnesota building and structure stubsMinnesota transportation stubsNational Register of Historic Places in Saint Paul, MinnesotaPedestrian bridges in MinnesotaRoad bridges on the National Register of Historic Places in MinnesotaSaint Paul, Minnesota stubsSkew bridges
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The Colorado Street Bridge also known as Bridge L-8803 is a masonry and brick arch bridge in Saint Paul, Minnesota's West Side neighborhood. It is 58 feet (18 m) wide and consists of a single oblique span of 70 feet 6 inches (21.49 m) that was built with the arch courses running parallel to the abutments, leading to a weaker structure than other skew arch construction methods, known as a false skew arch. It was designed in 1888 by Andreas W. Munster of the Saint Paul Engineer's Office and is now restricted to pedestrian traffic.

Excerpt from the Wikipedia article Colorado Street Bridge (Saint Paul, Minnesota) (License: CC BY-SA 3.0, Authors, Images).

Colorado Street Bridge (Saint Paul, Minnesota)
Torre de San Miguel, Saint Paul West Side

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Latitude Longitude
N 44.934722222222 ° E -93.084166666667 °
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Torre de San Miguel

Torre de San Miguel
55107 Saint Paul, West Side
Minnesota, United States
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Robert Street Bridge
Robert Street Bridge

The Robert Street Bridge is a reinforced concrete multiple-arch bridge that spans the Mississippi River in downtown Saint Paul, Minnesota, United States. The bridge is notable for its complex design that was required to accommodate river traffic, the St. Paul Union Pacific Vertical-lift Rail Bridge crossing underneath it at an angle, and roadways on the downtown side of St. Paul. The bridge is also notable for a monumental reinforced concrete rainbow arch. The rainbow arch not only provides 62 feet of headroom above the river, but also provides a strong aesthetic focus. It was built in 1924–1926 by Fegles Construction Company, Ltd. and designed by Toltz, King & Day. The bridge was added to the National Register of Historic Places in 1989. The bridge as well as Robert Street itself are named after Captain Louis Roberts, a notable French Canadian river boat captain, businessman and early settler of Saint Paul, MN. The bridge was commissioned in the early 1920s to replace a wrought-iron span, originally built in 1884-1885, that had become obsolete due to increasing traffic. The engineers who designed the bridge had several obstacles to work around. The tracks of the Chicago, St. Paul, Minneapolis and Omaha Railway, St. Paul Union Depot, and the Chicago Great Western Railway mainline were factors. The engineers also had to provide adequate clearance above the river, as defined by the United States War Department at the time. Finally, the bridge had to clear Second Street in downtown St. Paul and work through a busy manufacturing district at the south end. The location of nearly every pier was dictated by these requirements. As a result, the bridge was designed with a combination of barrel-arch and rib-arch flanking spans and a rainbow arch for the central span. One of the members of the crew building the bridge was Warren Burger, future Chief Justice of the United States.

Wabasha Street Bridge
Wabasha Street Bridge

The Wabasha Street Bridge is a segmental bridge that spans the Mississippi River in downtown Saint Paul, Minnesota, United States. It was named Wabasha Street Freedom Bridge in 2002, to commemorate the first anniversary of the September 11 attacks. It actually consists of two separate bridges, one for northbound and one for southbound traffic. The use of a concrete segmental box girder bridge provided a construction advantage because no falsework needed to be built beneath the bridge. The bridge opened to traffic in 1998; some decorative elements were not completed until late 2001. It was built by Lunda Construction Company and was designed by Toltz, King, Duvall, Anderson & Associates, Inc. The new bridge replaced an earlier structure that was built in 1889. The new bridge was built with pedestrians in mind. It features 11-foot-wide (3.4 m) sidewalks, six overlooks at the pier locations, and a stairway down to Raspberry Island. The color scheme of the bridge was also planned to reflect the architectural heritage of Saint Paul, with a soft buff color (the color of sandstone) to reflect the colors used in many downtown Saint Paul buildings. The color of terracotta roofs in the city was used to select the color of the railings, and the green patina of the Saint Paul Cathedral is echoed in the ornamental color of the overlooks. The new bridge has won several awards, including the Federal Highway Administration 1998 Excellence in Highway Design Award and the Minnesota Society of Professional Engineers 2001 Seven Wonders of Engineering in Minnesota award. The pedestrian walkways are on the outside of the bridge. There is a gap of 8.7 feet (2.7 m) between the two bridge decks, between the southbound bridge and the northbound bridge. In July 2011, a man jumped over the inner railing, on the side not designated for pedestrians, thinking a landing was on the other side. Instead, he fell 55 feet (17 m) and landed on Raspberry Island underneath the bridge. He survived the fall but was critically injured.To mark the Minnesota Senate's vote to allow same sex marriage in Minnesota, mayor Chris Coleman issued a proclamation on May 13, 2013, temporarily renaming the bridge "Wabasha Street Freedom to Marry Bridge" and ordered dozens of rainbow flags to be flown on the bridge.