The Chicago River is a system of rivers and canals with a combined length of 156 miles (251 km) that runs through the city of Chicago, including its center. Though not especially long, the river is notable because it is one of the reasons for Chicago's geographic importance: the related Chicago Portage is a link between the Great Lakes and the Mississippi River Basin, and ultimately the Gulf of Mexico.
The Loop is Chicago's central business district and one of the city's 77 municipally recognized community areas. Located at the center of downtown Chicago on the shores of Lake Michigan, it is the second-largest business district in North America after Midtown Manhattan. The headquarters and regional offices of several global and national businesses, retail establishments, restaurants, hotels, and theaters–as well as many of Chicago's most famous attractions–are located in the Loop. The neighborhood also hosts Chicago's City Hall, the seat of Cook County, offices of other levels of government, and several foreign consulates. The intersection of State Street and Madison Street in the Loop is the origin point for the address system on Chicago's street grid.
Michigan Avenue is a north-south street in Chicago that runs at 100 east on the Chicago grid. The northern end of the street is at DuSable Lake Shore Drive on the shore of Lake Michigan in the Gold Coast Historic District. The street's southern terminus is at Sibley Boulevard in the southern suburb of Dolton, but like many other Chicago streets, it exists in several disjointed segments.
Illinois Route 64 is an east–west state highway in Northern Illinois. Its western terminus is at the Iowa state line, connecting with U.S. Route 52 (US 52) and Iowa Highway 64 via the Dale Gardner Veterans Memorial Bridge at the Mississippi River west of Savanna. IL 64 then travels east through Mount Carroll, Lanark, Mount Morris, Oregon, Sycamore, Lily Lake, Saint Charles and the western suburbs of Chicago before terminating at U.S. Route 41 on the city's north side. IL 64 is 138.61 miles (223.07 km) long.
Goose Island is a 160 acre artificial island in Chicago, Illinois, formed by the North Branch of the Chicago River on the west and the North Branch Canal on the east. It is about 1.5 miles (2.4 km) long and 0.5 miles (0.80 km) across at its widest point.
Wacker Drive is a major multilevel street in Chicago, Illinois, running along the south side of the main branch and the east side of the south branch of the Chicago River in the Loop. The vast majority of the street is double-decked; the upper level is intended for local traffic, and the lower level for through-traffic and trucks serving buildings on the road. It is sometimes cited as a precursor to the freeway, though when it was built, the idea was that pleasure vehicles would use the upper level. It is the only street in the city that is prefixed with all four cardinal directions, albeit on different parts of its route. The drive is named for early 20th century Chicago businessman and city planner Charles H. Wacker.
LaSalle Street is a major north-south street in Chicago named for René-Robert Cavelier, Sieur de La Salle, a 17th century French explorer of the Illinois Country. The portion that runs through the Chicago Loop is considered to be Chicago's financial district.
Grand Central Station was a passenger railroad terminal in downtown Chicago, Illinois, from 1890 to 1969. It was located at 201 West Harrison Street on a block bounded by Harrison, Wells and Polk Streets and the Chicago River in the southwestern portion of the Chicago Loop. Grand Central Station was designed by architect Solon Spencer Beman for the Wisconsin Central Railroad (WC), and was completed by the Chicago and Northern Pacific Railroad.
The DuSable Bridge is a bascule bridge that carries Michigan Avenue across the main stem of the Chicago River in downtown Chicago, Illinois, United States. The bridge was proposed in the early 20th century as part of a plan to link Grant Park (downtown) and Lincoln Park (uptown) with a grand boulevard. Construction of the bridge started in 1918, it opened to traffic in 1920, and decorative work was completed in 1928. The bridge provides passage for vehicles and pedestrians on two levels. An example of a fixed trunnion bascule bridge, it may be raised to allow tall ships and boats to pass underneath. The bridge is included in the Michigan–Wacker Historic District and has been designated as a Chicago Landmark.
The North Avenue Bridge can refer to one of three bridges that has carried North Avenue over the North Branch of the Chicago River on the north side of Chicago, Illinois. A center-pier swing bridge built in 1877 was replaced in 1907 by a bascule bridge, allowing river traffic more room for maneuvering in and out of the North Canal, just north of Goose Island.
The Franklin–Orleans Street Bridge, commonly known as the Franklin Street Bridge, is a bascule bridge over the Chicago River, in Chicago, Illinois, United States. It was built in October 1920, and is located directly southwest of the Merchandise Mart. Connecting the Near North Side with "The Loop," is at the junction of the branches of the river, lying directly west of the Wells Street Bridge. It carries four lanes of traffic in the northbound direction, and sidewalks are available on both sides of the bridge.
The Wells Street Bridge is a bascule bridge over the Chicago River, in downtown Chicago, Illinois, United States, which was built in 1922. Standing east of the Franklin Street Bridge and southeast of the Merchandise Mart, the bridge connects the Near North Side with "The Loop". The bridge is double-decked, the lower deck carrying three lanes of traffic south over the river with sidewalks on both sides of the street. The upper deck serves as a bridge for the Chicago Transit Authority's Brown and Purple lines. Bridge tenders' houses for controlling the bridge are on the northwest and southeast corners of the bridge.
The Clark Street Bridge is a bascule bridge that spans the Chicago River in downtown Chicago, connecting the Near North Side with The Loop via Clark Street.
Clark Street is a north–south street in Chicago, Illinois that runs close to the shore of Lake Michigan from the northern city boundary with Evanston, to 2200 South in the city street numbering system. At its northern end, Clark Street is at 1800 West; however the street runs diagonally through the Chicago grid for about 8 miles (13 km) to North Avenue and then runs at 100 West for the rest of its course south to Cermak Road. It is also seen in Riverdale beyond 127th street across the Calumet River, along with other nearby streets that ended just south of the Loop. The major length of Clark Street runs a total of 98 blocks.
The Cortland Street Drawbridge over the Chicago River is the original Chicago-style fixed-trunnion bascule bridge, designed by John Ericson and Edward Wilmann. When it opened in 1902, on Chicago's north side, it was the first such bridge built in the United States. The bridge was a major advance in American movable bridge engineering, and was the prototype for over 50 additional bridges in Chicago alone. The bridge was designated as an ASCE Civil Engineering Landmark in 1981, and a Chicago Landmark in 1991.
The Chicago and North Western Railway's Kinzie Street railroad bridge is a single leaf bascule bridge across the north branch of the Chicago River in downtown Chicago, Illinois. At the time of its opening in 1908 it was the world's longest and heaviest bascule bridge. The previous bridges on the same site included a pedestrian span that was the first bridge across the Chicago River; a second bridge that served as Chicago's first railroad bridge; and a third bridge that was one of the first all-steel spans in the United States.
The Outer Drive Bridge, also known as the Link Bridge, is a double-deck bascule bridge carrying DuSable Lake Shore Drive across the Chicago River in Chicago, Illinois, United States. Construction was started in 1929 and was completed in 1937 as one of the Public Works Administration's infrastructure projects in Chicago. Completion of the bridge tied the north and south sections of the "outer" shore roadway, now called DuSable Lake Shore Drive, together. The bridge was officially named the Franklin Delano Roosevelt Memorial Bridge in 1982 to honor the centennial anniversary of the birth of Franklin Delano Roosevelt. It was planned by the Chicago Plan Commission, using Hugh E. Young as the consulting engineer, was designed by the Strauss Engineering Company, built by the American Bridge Company, and erected by Ketler and Elliot Company. It crosses near the mouth of the Chicago River.
Collins Engineers, Inc. is an ENR Top 500 Design Firm and provides water resources, waterfront, program management and underwater engineering services to government agencies, contractors, and private sector clients. The firm was founded by Thomas J. Collins in April 1979. It is a privately held company with eighteen offices in the United States, United Kingdom, and Ireland. Collins Engineers, Inc. is headquartered in Chicago, Illinois.
Collins Engineers, Inc. was an early advocate for the use of professional engineers as diving inspectors in the evaluation of underwater structures. The firm provides underwater engineering services performed by in-house engineer-divers around the world to clients including the United States Navy and state departments of transportation. Reference manuals were developed on the subject for the Federal Highway Administration (FHWA) and National Highway Institute (NHI).
In 2006, Collins Engineers, Inc. acquired MacIntosh Engineering and Development Co. located in Auburn, California. In 2008, Collins Engineers, Inc. acquired Charles Keim & Associates, Inc. located in Boulder, Colorado.
William Donald Scherzer was an American engineer and inventor who invented the rolling lift bridge.
