M-8 is a state trunkline highway in the U.S. state of Michigan lying within the cities of Detroit and Highland Park. Much of it is the Davison Freeway, the nation's first urban depressed freeway, which became a connector between the Lodge (M-10) and the Chrysler (Interstate 75, I-75) freeways. Named for an English immigrant to the area, Davison Avenue was originally the only street connecting across Highland Park to Detroit. It was rebuilt by the city and Wayne County as a freeway during World War II. The roadway was transferred to the jurisdiction of the Michigan Department of Transportation (MDOT) in 1993 and numbered as M-8. Subsequent changes by the state rebuilt the freeway and extended the M-8 designation to connect to the Jeffries Freeway (I-96). Route description M-8 starts on the western end at an interchange with I-96 in Detroit. Davison Avenue continues west of this interchange forming a service drive for the freeway while M-8 uses a short section of freeway to connect between I-96 and Davison Avenue. This short freeway segment runs easterly to Livernois Avenue where the trunkline transitions into Davison Avenue. East of this transition, the roadway turns northeasterly running through residential areas of Detroit. The trunkline meets M-10/Lodge Freeway on the border between Detroit and Highland Park, a city surrounded by Detroit. Northeast of this interchange, M-8 becomes the Davison Freeway, running depressed below the level of the cross streets. There are interchanges for M-1/Woodward Avenue and Oakland Avenue before meeting the Chrysler Freeway (I-75) on the eastern border of Highland Park. The Davison Freeway continues northeasterly in Detroit north of Hamtramck. The freeway ends between Gallagher and Newbern avenues. M-8 continues to Conant Street where the designation ends. Davison Avenue continues past Mound Road where it turns back due east until it ends at Van Dyke Street next to the Mt. Olivet Cemetery. MDOT's 2007 traffic surveys counted the average annual daily traffic (AADT), a measure of the number of vehicles using a section of roadway on any given day of the year. An average of 38,000 vehicles used the western section of M-8 along Davison Avenue in 2007 each day; the eastern segment carried 37,300 vehicles. The section of freeway in between carried in excess of 50,000 vehicles a day in 2007 between M-10 and I-75. Of this traffic, 1,900 trucks and other commercial vehicles used the trunkline. History Davison Avenue predates