Saginaw County, officially the County of Saginaw, is a county located in the U.S. state of Michigan. As of the 2020 Census, the population was 190,124. The county seat is Saginaw. The county was created by September 10, 1822, and was fully organized on February 9, 1835. The etymology of the county's name is uncertain. It may be derived from Sace-nong or Sak-e-nong, as the Sauk tribe is believed by some to have once lived there. A more likely possibility is that it comes from Ojibwe words meaning "place of the outlet" –sag and ong. See List of Michigan county name etymologies.
Bay City is a city in and the county seat of Bay County, Michigan, United States. The population was 32,661 as of the 2020 census. The city is located just upriver from Saginaw Bay on the Saginaw River. It is the principal city of the Bay City metropolitan area, which is coterminous with Bay County as part of the larger Greater Tri-Cities region of Central Michigan. Several historic bridges cross the Saginaw River in Bay City, including Liberty Bridge, Veterans Memorial Bridge, Independence Bridge, and Lafayette Avenue Bridge.
The Montlake Bridge is a double-leaf bascule bridge that carries State Route 513 over Seattle's Montlake Cut—part of the Lake Washington Ship Canal—connecting Montlake and the University District.
M-13 is a 73.339-mile (118.028 km) north–south state trunkline highway that runs through the Saginaw Bay region of the US state of Michigan. It runs from Interstate 69 (I-69) south of Lennon to US Highway 23 (US 23) near Standish. The southern section of the trunkline runs along a pair of county lines in a rural area dominated by farm fields. The highway directly connects the downtown areas of both Saginaw and Bay City. North of the latter city, the Lake Huron Circle Tour follows M-13 along the Saginaw Bay.
The Zilwaukee Bridge is a high-level, segmental concrete bridge spanning the Saginaw River in the U.S. state of Michigan. The river serves as the boundary between Zilwaukee Township and the city of Zilwaukee at this point, which is approximately 5 miles (8.0 km) north of downtown Saginaw. It carries Interstate 75 and US 23.
Interstate 675 (I-675) is an auxiliary Interstate Highway in the US state of Michigan. The freeway is a 7.7-mile-long (12.4 km) loop route through downtown Saginaw, as I-75 passes on the east side of the city. I-675 is also a state trunkline highway that provided a bypass of the former drawbridge carrying I-75 and US Highway 23 (US 23) across the Saginaw River. Construction of I-675 started in 1969 and the freeway opened in 1971. Since then, sections near downtown were reconstructed between 2009 and 2011 to update one of the freeway's interchanges and rebuild the bridge over the Saginaw River.
M-84 is a north–south state trunkline highway in the Lower Peninsula of the US state of Michigan. The highway starts on the west side of Saginaw at an intersection with M-58 and runs north through residential and commercial areas. There are two colleges or universities near the trunkline as it connects Saginaw with Bay City, providing an alternative to the freeway that carries Interstate 75/US Highway 23 (I-75/US 23). The northern terminus is at a pair of intersections with M-25 on the east side of the Saginaw River in Bay City.
US Highway 23 (US 23) is a north–south United States Numbered Highway that runs from Jacksonville, Florida, to Mackinaw City, Michigan. In the US state of Michigan, it is a major, 362-mile-long (583 km), north–south state trunkline highway that runs through the Lower Peninsula. The trunkline is a freeway from the Michigan–Ohio state line near Lambertville to the city of Standish, and it follows the Lake Huron shoreline from there to its northern terminus. Serving the cities of Ann Arbor and Flint, US 23 acts as a freeway bypass of the Metro Detroit area. Overall, the highway runs through rural areas of the state dominated by farm fields or woodlands; some segments are urban in character in the Ann Arbor, Flint and Tri-Cities areas. The section from Flint north to Standish also carries Interstate 75 (I-75) along a concurrency that includes a segment that carries almost 70,000 vehicles on a daily basis.
The Liberty Bridge is a bascule-type drawbridge located in Bay City, Michigan, United States. It spans the Saginaw River and connects Vermont Street and Woodside Avenue. It was built in 1986. Starting June 16, 2023, an electronic toll is charged to motorists either through their BC-Pass, E-ZPass transponder, or via license plate photo.
The George and Cynthia Mitchell Memorial Causeway is a set of causeways in Galveston, Texas, United States. Two of the routes carry the southbound and northbound traffic of Interstate 45, while the original causeway is restricted to rail traffic. It is the main roadway access point to Galveston Island. The second access point is Bolivar Ferry.
The University Avenue Bridge is a double-leaf bascule bridge crossing the Schuylkill River in Philadelphia, Pennsylvania. The four-lane bridge links University Avenue in West Philadelphia with South 34th Street in the Grays Ferry section of South Philadelphia. It measures 536 feet (163 m) long, 100 feet (30 m) wide, and clears the water by 30 feet (9.1 m).
The West Jefferson Avenue–Rouge River Bridge is a historic double-leaf bascule bridge in Wayne County, Michigan, at the border of the cities of Detroit and River Rouge. The bridge carries Jefferson Avenue, a major thoroughfare in Southwest Detroit, over the River Rouge, an important inland route for lake freighters. The bridge was built in 1922, and was listed on the National Register of Historic Places in 2000.
Dock Bridge is a pair of vertical lift bridges crossing the Passaic River at Newark, Essex County and Harrison, Hudson County, New Jersey, United States, used exclusively for railroad traffic. It is the seventh crossing from the river's mouth at Newark Bay and is 5.0 miles (8.0 km) upstream from it. Also known as the Amtrak Dock Vertical Lift, it carries Amtrak, NJ Transit, and PATH trains. It is listed on the state and federal registers of historic places.
The South Union Street–Boardman River Bridge, also known as the Trunk Line Bridge, is a bridge located on South Union Street over the Boardman River in Traverse City, Michigan. It was listed on the National Register of Historic Places in 2000.
Niantic River Bridge, also known as Amtrak Bascule Bridge No. 116.74, is a railroad bridge carrying Amtrak's Northeast Corridor line across the Niantic River between East Lyme and Waterford, Connecticut. It is a drawbridge with a bascule-type draw span. A new bridge was constructed in 2012 to replace the former span built in 1907. It opened on September 8, 2012. Related construction work finished in June 2013.
The Blossomland Bridge is a bascule bridge in St. Joseph, Michigan, that carries M-63 across the St. Joseph River. Delayed by World War II, construction took place from 1947 though 1948. At the time, it was the longest bridge built by the Michigan State Highway Department. The bridge is listed on the National Register of Historic Places.
The Cheboygan Bascule Bridge, also known as the State Street Bridge, is a double-leaf bascule bridge in Cheboygan, Michigan, carrying U.S. Highway 23 across the Cheboygan River. Built in 1940, it was the last bascule bridge constructed in the state of Michigan prior to the end of World War II. It replaced an aging swing bridge built in 1877. The bridge is listed on the National Register of Historic Places.
The Winant Avenue Bridge is a vehicular movable bridge spanning the Hackensack River in Bergen County, New Jersey 14 miles (23 km) from its mouth at Newark Bay. Built in 1934, it is also known as the Route 46 Hackensack River Bridge and S46 Bridge, it carries U.S. Route 46 (US 46) in Little Ferry and Ridgefield Park. Owned and operated by the New Jersey Department of Transportation (NJDOT), the double leaf bascule bridge is located on a navigable reach. While there have been no requests since 1978, the Code of Federal Regulations last amended in 1999 requires 24-hour notice to be opened. The bridge has been minimally altered since its construction and is eligible for individual listing on the National Register of Historic Places (NRHP).
The Gugel Bridge, also known as the Beyer Road – Cass River Bridge, is a bridge carrying Beyer Road over the Cass River in Frankenmuth Township, Michigan. It was listed on the National Register of Historic Places in 2000. It is the only remaining example in Michigan of a bridge with both a pony truss span and a main through truss span.
M-13 / M-84 
