michigan highway state trunkline highway lower_peninsula state michigan trunkline travels city junction junction east county line northwestern thumb area state outside cities villages route passes rural farm country near intersects freeway carries interstate highway industrial area road bearing designation existed july state initially numbered trunkline highways time extended rerouted shortened times changes resulted essentially modern highway routing highway fully paved 1940s change reversed extension downtown 1960s overturned 1970s change construction pair interchange route description starts junction directions highway separated median central feature ends immediately east intersection highway runs east trunkline follows easterly residential subdivisions interchange industrial area interchange exit freeway built bridge carries washington road freeway variant diamond interchange design called interchange leaving industrial properties east follows washington road mixture farm fields residential subdivisions north community arthur highway intersects road east crosses border highway follows village crosses twice east town highway follows road farm fields community near south turns northeast running city trunkline follows state street past intersection street crosses highway continues northeasterly town community northeast turns east trunkline runs village follows main street residential neighborhoods central business district east highway crosses crossing county line approximately mile county ends intersection van road maintained michigan_department_of_transportation mdot like state highways michigan maintenance responsibilities department tracks volume traffic uses roadways jurisdiction volumes expressed metric called annual average daily traffic statistical calculation average daily number vehicles segment roadway mdot surveys showed highest traffic levels vehicles daily lowest counts vehicles day east intersection sections listed national_highway_system network roads important country economy defense mobility history originally signed july ran southeast east area ran south concurrently area running northeasterly east eastern end extended southerly highway late western end changed followed eastern end rerouted northeasterly area exception routing downtown highway followed approximate routing current highway half highway rerouted set parallel roadways south previous routing change reversed fully paved section finished late early starting westernmost approximately mile concurrency bypass completed late extended southwesterly downtown turned west midland road west city routing city removed completed west freeway highway rest removed highway system turned local control designation removed ended junction north downtown mdot completed reconstruction interchange incorporate pair washington road major intersections
M-81 (Michigan highway)