The Blue Water Bridge is a twin-span international bridge across the St. Clair River that links Port Huron, Michigan, United States, and Sarnia, Ontario, Canada. The Blue Water Bridge connects Highway 402 in Ontario with both Interstate 69 (I-69) and Interstate 94 (I-94) in Michigan.
M-28 is an east–west state trunkline highway that traverses nearly all of the Upper Peninsula of the U.S. state of Michigan, from Wakefield to near Sault Ste. Marie in Bruce Township. Along with US Highway 2 (US 2), M-28 forms a pair of primary highways linking the Upper Peninsula from end to end, providing a major access route for traffic from Michigan and Canada along the southern shore of Lake Superior. M-28 is the longest state trunkline in Michigan numbered with the "M-" prefix at 290.373 miles (467.310 km). The entire highway is listed on the National Highway System, while three sections of M-28 are part of the Lake Superior Circle Tour. M-28 also carries two memorial highway designations along its route.
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.
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-63 is a state trunkline highway in the US state of Michigan that runs from M-139 at Scottdale through the cities of Benton Harbor and St. Joseph to Interstate 196/US Highway 31 (I-196/US 31) at exit 7 just outside Hagar Shores. The trunkline runs through residential areas south of St. Joseph and through the central business districts of the twin cities. Further north, M-63 runs along the Lake Michigan shoreline.
Interstate 75 (I-75) is a part of the Interstate Highway System that runs north–south from Miami, Florida, to Sault Ste. Marie in the Upper Peninsula of the US state of Michigan. I-75 enters the state from Ohio in the south, north of Toledo, and runs generally northward through Detroit, Pontiac and Bay City, crosses the Mackinac Bridge, and ends at the Canadian border in Sault Ste. Marie. The freeway runs for approximately 396 miles (637 km) on both of Michigan's major peninsulas. The landscapes traversed by I-75 include Southern Michigan farmland, northern forests, suburban bedroom communities, and the urban core of Detroit. The freeway also uses three of the state's monumental bridges to cross major bodies of water. There are four auxiliary Interstates in the state related to I-75, as well as nine current or former business routes, with either Business Loop I-75 or Business Spur I-75 designations.
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 Lafayette Avenue Bridge, formerly listed on the National Register of Historic Places as the Bay City Bascule Bridge, is the name given to two separate bridges located in Bay City, Michigan. The bridges carry M-13 and M-84 over the Saginaw River. They are maintained by the Michigan Department of Transportation, and the bascule portion is currently the oldest of Bay City's four modern drawbridges. It was listed on the National Register of Historic Places on November 30, 1999, but was removed from the Register in 2015.
US Highway 41 (US 41) is a part of the United States Numbered Highway System that runs from Miami, Florida, to the Upper Peninsula of the US state of Michigan. In Michigan, it is a state trunkline highway that enters the state via the Interstate Bridge between Marinette, Wisconsin, and Menominee, Michigan. The 278.769 miles (448.635 km) of US 41 that lie within Michigan serve as a major conduit. Most of the highway is listed on the National Highway System. Various sections are rural two-lane highway, urbanized four-lane divided expressway and the Copper Country Trail National Scenic Byway. The northernmost community along the highway is Copper Harbor at the tip of the Keweenaw Peninsula. The trunkline ends at a cul-de-sac east of Fort Wilkins State Park after serving the Central Upper Peninsula and Copper Country regions of Michigan.
The West Jefferson Avenue–Rouge River Bridge is a bridge located where Jefferson Avenue crosses the Rouge River at the border of Detroit and River Rouge, Michigan. It is the only surviving pony truss bascule bridge in the state of Michigan. It was listed on the National Register of Historic Places in 2000.
Trunk Line Bridge No. 1, also known as Peshekee River Bridge, is a bridge adjacent to US Highway 41/M-28 (US 41/M-28). It was the first of many trunkline bridges designed by the Michigan State Highway Department. It was built in 1914, and listed on the National Register of Historic Places in 1999.
The Main Street–Black River Bridge is a bridge located on Main Street over the Black River in Ramsay, Bessemer Township, Michigan, USA. It was listed on the National Register of Historic Places in 1999.
The Lake Shore Drive Bridge, also known as the M-26 Bridge or the Eagle River Bridge, is a pedestrian bridge in Eagle River, Michigan, crossing the Eagle River. It carried highway M-26 over the river from 1915 until 1990, when the adjacent Eagle River Timber Bridge replaced it for automobile traffic. The Lake Shore Drive Bridge is listed as a Michigan State Historic Site and is a contributing property of the Eagle River Historic District.
The M-28–Tahquamenon River Bridge is a bridge located on M-28 over the Tahquamenon River in Chippewa Township, Michigan. It was listed on the National Register of Historic Places (NRHP) in 1999.
The US 31–Island Lake Outlet Bridge is a double-leaf bascule bridge in downtown Charlevoix in the U.S. state of Michigan. The bridge carries U.S. Highway 31 across Island Lake Outlet that ultimately connects Lake Charlevoix to Lake Michigan.
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 US 12–St. Joseph River Bridge is a three-span camelback bridge in Mottville, Michigan, that carried U.S. Route 12 across the St. Joseph River. Built in 1922, it is the fourth bridge to cross the river at this location. It has served as a pedestrian bridge since 1990 when a new bridge opened alongside to carry the highway. The bridge is the longest surviving camelback bridge in Michigan. It is a Michigan State Historic Site and is listed on the National Register of Historic Places.
A concrete curved-chord through girder bridge, sometimes known as a camelback bridge, is a type of concrete bridge most common in the U.S. state of Michigan and the Canadian province of Ontario. The type was designed by C.V. Dewart, the first professional bridge engineer of the Michigan State Highway Department. By the early 1920s, the Michigan State Highway Department had produced standardized designs for these bridges in lengths of 50, 60, 70, 75 and 90 feet. The first such bridge in Michigan was built in 1922 over the Raisin River at Tecumseh. By the end of the decade, the design fell out of favor since they could not be widened to handle increasing traffic.
The 23 Mile Road–Kalamazoo River Bridge is a curved-chord through-girder bridge in Marengo Township, Michigan, that carries 23 Mile Road over the Kalamazoo River. Built in 1922, it 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).
US 23 
