Portal:Michigan highways
Michigan Highways
The State Trunkline Highway System of the US state of Michigan is a network of roads owned and maintained by the Michigan Department of Transportation (MDOT). The most prominent of these roads are part of one of three numbered highway systems in Michigan: Interstates Highways, US Highways, and the other State Trunklines. Other systems of roads are operated by the 83 counties in the state as well as each city.
Interstate Highways and US Highways are assigned at the national level. Interstate Highways are numbered in a grid—even-numbered highways are east–west highways (with the lowest numbers along Mexico and the Gulf of Mexico), and odd-numbered highways are north–south highways (with the lowest numbers along the Pacific Ocean). US Highways are also numbered in a grid—even numbered for east–west highways (with the lowest numbers along Canada) and odd numbered for north–south highways (with the lowest numbers along the Atlantic Ocean). For this reason, mainline (two-digit) Interstate Highways in Michigan all have numbers above 69 and mainline US Highways all have numbers below 45. Three-digit Interstate and U.S. Highways, also known as "child routes," are branches off their main one- or two-digit "parents". The Interstate and US Highways are maintained by MDOT. Interstate 75 (I-75) and US Highway 23 (US 23) are the longest examples in the state.
State Trunklines are the other state highways maintained by MDOT. These highways are completely owned and maintained by the state. Michigan highways are properly referred to using the M and never as "Route 28" or "Highway 115", but as M-28 or M-115. The marker used for state trunklines is a diamond with a block-letter "M" at the top. Roads that are maintained by the state but not assigned a state trunkline designation carry an unsigned highway designation.
County-Designated Highways are assigned numbers in a zone system by MDOT, but maintained by the counties. Each zone is indicated by a letter A–H which is followed by a number based on a grid inside that zone. Each county also maintains any other roadway that is not a state trunkline or a city street. The numbering and signing practices vary from county to county, as does the size of each county's system. Numerical designations typically do not carry over from one county to the next; a CDH that crosses county lines keeps its designation in each county however. County road designations are typically abbreviated "CR" or "Co Rd" followed by the number, and CDHs are abbreviated to just their letter and number assignment.
Recognized content - 
County Road 510 (CR 510, Co. Rd. 510) is a primary county road in Marquette County, Michigan, that connects Negaunee Township with the community of Big Bay. The road runs through rural forests as a paved and dirt road in northern Marquette County. It crosses the Dead River near the Hoist and McClure dams and runs for 26.103 miles (42.009 km) before terminating at an intersection with CR 550 south of Big Bay.
The road was originally part of the State Trunkline Highway System as M-35. In 1919, the highway was to run through the Huron Mountains in northern Marquette County. A bridge was moved from rural Pennsylvania in 1921 to carry the road over the Dead River. The Huron Mountain Club opposed the highway, and with the aid of Henry Ford, the road's construction was stopped during the 1920s, leaving a gap in the routing through the mountains. In 1939, the state transferred control of M-35 to local authorities, and the Marquette County Road Commission (MCRC) designated it CR 510. Since that time, the bridge over the Dead River has survived a flood in 2003, and it was bypassed in 2010 by a new section of road with another bridge over the river. (Full article...)
General images
-
Milemarker used in 1922 for M-14 -
Welcome sign along US 8 -
Map of the zone system -
Dead Man's Curve along the Marquette–Negaunee Road shown in 1917 with its hand-painted centerline, the first in the nation -
H-13 during winter -
M-39 bridge over the River Rouge in Dearborn -
M-553 approaching Glass' Curve south of Marquette -
Junction between M-28 and M-178 south of Munising before 1941 -
H-58 west of Grand Marais -
Construction along I-96 for the interchange with M-231 in July 2013 (from Michigan State Trunkline Highway System) -
M-87 on November 1, 1956 -
Planning map for the Detroit area freeways from 1955 -
Interstate HighwaysOther freewaysMiscellaneous expressways -
Grand River Avenue, once a part of M-16 and later US 16, was originally an Indian trail converted as a plank road before becoming a state highway. -
M-121 in Jenison -
Exit 254 on I-75 south of Grayling -
Map of the pre-statehood Indian trails -
A-2 in Allegan County south of Holland
.jpg)
.JPG)
Selected picture
Topics
State Trunkline System, overview of the system
- Interstates Highways in the state
- US Highways in the state
- State Trunklines
- County-Designated Highways in the state
- Pure Michigan Byways, a system of scenic, historical or recreational highways in the state
- Great Lakes Circle Tour
Subcategories
Related portals
WikiProjects
Things to do
Nominations and votes for selected articles and selected pictures are always needed. Anyone can nominate an article, and anyone can vote for an article. You can also recommend items for Did you know?. Improvements to the articles are always welcome as the project works on expanding and nominating the remaining ones for Good Article or Featured Article status.
