U.S. Route 25 in Michigan

MDSH
Length	190.953 mi[1] (307.309 km)
Existed	November 11, 1926 (1926-11-11)[2]–September 26, 1973 (1973-09-26)[3]
History	Functionally replaced by I-75, I-94 and M-25
Major junctions
South end	US 25 near Toledo, OH
Major intersections	US 24 from Monroe to Woodhaven I-75 in Detroit M-1 in Detroit I-94 from Mount Clemens to Port Huron M-21 near Port Huron M-46 in Port Sanilac
North end	M-25 in Port Austin
Location
Country	United States
State	Michigan
Counties	Monroe, Wayne, Macomb, St. Clair, Sanilac, Huron
Highway system
United States Numbered Highway System List Special Divided Michigan State Trunkline Highway System Interstate US State Byways
← Bus. M-24 → M-25

US Highway 25 (US 25) was a part of the United States Numbered Highway System in the state of Michigan that ran from the Ohio state line near Toledo and ended at the tip of The Thumb in Port Austin. The general routing of this state trunkline highway took it northeasterly from the state line through Monroe and Detroit to Port Huron. Along this southern half, it followed undivided highways and ran concurrently along two freeways, Interstate 75 (I-75) and I-94. Near the foot of the Blue Water Bridge in Port Huron, US 25 turned north and northwesterly along the Lake Huron shoreline to Port Austin.

Created with the initial US Highway System on November 11, 1926, US 25 replaced several previous state highway designations. Some of the preceding highways followed roadways created in the 19th and the early 20th centuries. It initially was only routed as far north as Port Huron; the northern extension to Port Austin happened in 1933. By the end of the 1950s, the entire route was paved. Starting in the early 1960s, segments of I-75 and I-94 were built, and US 25 was shifted to follow them south of Detroit to Port Huron. A business loop was created when the main highway bypassed downtown Port Huron, and then in 1973, the entire designation was removed from the state. The final routing of the highway is still maintained by the state under eight different designations, some unsigned.

Route description

State line to Downriver

In its final configuration before it was decommissioned in the state, US 25 entered Michigan south of

The highway followed Telegraph Road through downtown Flat Rock and continued into the suburban area of Downriver. At the intersection with Dix–Toledo Road near Woodhaven, US 25 separated from US 24 and continued northeasterly for about two miles (3.2 km) to an interchange with I-75 where it merged onto the freeway. I-75/US 25 continued on the Fisher Freeway through the Downriver suburbs of Taylor, Southgate, Allen Park, Lincoln Park, and Melvindale before entering the city of Detroit. The freeway curved to run east-northeasterly and passed through an industrial area of the city, crossing the River Rouge. At Clark Avenue, US 25 left the freeway to turn a block south and run along Fort Street parallel to I-75. The highway continued along Fort Street running under the approaches to the Ambassador Bridge and into downtown.^[5][6]

Downtown Detroit to Port Huron

In Downtown Detroit, Fort Street ended at

North of downtown Port Huron, US 25 followed Pine Grove Avenue to the eastern terminus of

The chief transportation routes in 1701 were the Indian trails that crossed the future state of Michigan; the one connecting what are now Detroit and Port Huron was one of these 13 trails at the time.^[7] Detroit created 120-foot (37 m) rights-of-way for the principal streets of the city, the modern Gratiot Avenue included, in 1805.^[8] This street plan was devised by Augustus Woodward and others following a devastating fire in Detroit.^[9] Gratiot Avenue, then also called Detroit–Port Huron Road,^[8] was authorized by the United States Congress on March 2, 1827, as a supply road from Detroit to Port Huron for Fort Gratiot. Construction started in Detroit in 1829, and the roadway was completed in the same year to Mount Clemens. The rest was finished in 1833.^[10] The road was named for the fort near Port Huron, which was in turn named for Colonel Charles Gratiot,^[11] the supervising engineer in charge of construction of the structure in the aftermath of the War of 1812.^[12]

When the state highway system was first signed in 1919,[14] five separate highways were designated along US 25's general route from the state line north through Detroit and Port Huron to Port Austin. From the state line north to Monroe, the roadway was given the first M-56 designation. From there northward, there was no state highway that corresponded to the future US 25, but the first M-10 followed the future US 24 into the Detroit area. Near Dearborn, M-10 ran further inland than the future US 25 and included a concurrency with M-17 into Detroit. From Detroit northward, Gratiot Avenue was assigned the M-19 number into the Port Huron area. Through downtown Port Huron, the future US 25 was numbered as the first M-27 and along the lakeshore north to Harbor Beach, the highway was M-31. From Harbor Beach into Port Austin, M-27 took over the route.^[15]

When the US Highway System was created on November 11, 1926,^[2] US 25 was included in Michigan's section of the system.^[16] The US Highway designation was assigned to run along Dixie Highway replacing that segment of M-56. From Monroe northward, US 25 overlapped US 24 on Telegraph Road to the Dearborn area and then followed M-17 (Ecorse Road) to Fort Street and into Downtown Detroit. From there, the highway replaced M-19 to Marysville and overlapped M-29 into Port Huron to an intersection with M-21; the remainder of the highway to Port Austin was numbered M-29 only.^[17] The highway was rerouted off Telegraph Road along Dix–Toledo Highway into downtown Detroit in 1929.^[18][19] By the end of 1932, US 25 was rerouted from downtown Monroe along Dixie Highway north to US 24 instead of turning westward in the city.^[20] The next year, US 25 was extended northward from Port Huron to Port Austin, replacing that section of M-29 in the process. The remainder of M-29 westward to Bay City was renumbered M-25.^[21][22]

In 1936, US 25 was changed to traffic along a

Major intersections

All exits are unnumbered.

County	Location	mi[1]	km	Destinations	Notes
Monroe	Erie Township	0.000	0.000	US 25 south – Toledo	Continuation into Ohio
	Monroe	14.776	23.780	M-50 west – Jackson	Southern end of M-50 concurrency
		14.916	24.005	M-50 east to I-75	Northern end of M-50 concurrency
	Frenchtown Township	19.480	31.350	US 24 south (Telegraph Road) – Toledo	Southern end of US 24 concurrency
Detroit	Northern end of US 24 concurrency
	34.007	54.729	I-75 south – Monroe	Southern end of I-75 concurrency
	Telegraph Road )	Northbound exit and southbound entrance
		36.185	58.234	Eureka Road
	Taylor–Southgate city line	37.024– 37.535	59.584– 60.407	Allen Road, Northline Road
	Lincoln Park	40.009	64.388	Dix Highway	No access from southbound I-75/US 25 to northbound Dix Highway, northbound Dix Highway to southbound I-75/US 25, or southbound Dix Highway to northbound I-75/US 25
		40.910– 40.935	65.838– 65.878	M-39 (Southfield Road)
	Melvindale	42.051	67.675	Outer Drive
	Detroit	43.223	69.561	M-85 (Fort Street) / Schaefer Highway	Northern terminus of M-85
		45.086	72.559	Dearborn Avenue	Northbound exit and southbound entrance
		45.818	73.737	Fort Street, Springwells Avenue
		46.708	75.169	Livernois Avenue
		47.276	76.083	Detroit Clark Avenue	Northern end of I-75 concurrency; US 25 followed Clark Avenue off the freeway
		49.375	79.461	M-1 (Woodward Avenue)
		50.773– 50.811	81.711– 81.772	Toledo
		53.288	85.759	M-53 north (Van Dyke Avenue)
		54.254– 54.265	87.313– 87.331	Detroit, Port Huron
		55.572	89.434	M-97 north (Gunston Avenue)
Wayne–Macomb county line	Detroit–East Detroit city line	54.740	88.095	M-102 (8 Mile Road)	8 Mile Road is the county line
Detroit	Northbound entrance and southbound exit only
	Mount Clemens	72.489– 72.529	116.660– 116.724	M-59 west (Hall Road) – Pontiac	Southern end of M-59 concurrency
	Detroit M-59 west – Pontiac M-29 north (23 Mile Road) – New Baltimore	Southern end of I-94 concurrency; northern end of M-59 concurrency roadway continues beyond I-94 as M-29
		79.641	128.170	M-19 north – Richmond, New Haven	Eastbound exit and westbound entrance; southern terminus of M-19
	Lenox Township	81.096	130.511	26 Mile Road – Marine City
St. Clair	Casco–Columbus township line	90.089	144.984	Richmond, St. Clair	Connects to Fred W. Moore Highway
	St. Clair Township	95.035	152.944	Wadhams Road
	Bus. US 25 north (Gratiot Road) – Marysville	Southern terminus of Bus. US 25
	Kimball–Port Huron township line	102.429	164.843	Range Road, Dove Street
	Port Huron Township	104.175– 104.724	167.653– 168.537	M-21 – Flint, Port Huron
		106.730	171.765	Water Street, Lapeer Avenue – Port Huron	Indirect access to Lapeer Avenue via Lapeer Connector (former M-146)
	Port Huron	108.009	173.824	I-94 east	Northern end of I-94 concurrency
		109.602	176.387	M-136 west (Pine Grove Avenue)	Eastern terminus of M-136
Sanilac	Lexington	125.092	201.316	M-90 west (Huron Avenue)	Eastern terminus of M-90
	Port Sanilac	136.458	219.608	M-46 west (Main Street)	Eastern terminus of M-46
Huron	Harbor Beach	165.989	267.133	M-142 west (State Street)	Eastern terminus of M-142
	Port Austin	190.615	306.765	M-53 south (Lake Street)	Southern end of M-53 concurrency
		190.953	307.309	M-53 south (Lake Street) M-25 west (Spring Street) – Bay City	Northern end of M-53 concurrency; northern terminus of M-53 and eastern terminus of M-25
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

Related trunklines

There were three additional trunkline highways related to US 25 in Michigan, two

business loop

.

Erie alternate route

Erie
Length	5.111 mi[1] (8.225 km)
Existed	1937[25][26]–1945[27]

US Highway 25A (US 25) was an alternate route that started at the

US Highway 25A (US 25A) was an alternate route near Port Huron that provided a connection to the Blue Water Bridge to Canada. The highway split from its parent north of Port Huron and followed 24th Avenue south to connect to M-51 (Pine Grove Avenue) while US 25 followed Lakeshore Road and Gratiot Avenue into Port Huron. The parent highway crossed under the approaches to the Blue Water Bridge, and the alternate route, along with M-51, provided a signed path between US 25 and the bridge.^[32] The designation was created in early 1940^[28][29] and was deleted when US 25 was rerouted in 1963 through Port Huron and over the alternate route.^[32][33]

Port Huron business loop

Business US 25 (Bus. US 25) was an 8.4-mile-long (13.5 km) business loop serving the cities of Marysville and Port Huron. It started southwest of Marysville near St. Clair County International Airport at I-94/US 25 and ran northeasterly along Gratiot Avenue into Marysville. It then passed through the city's downtown area and turned northward along Gratiot Boulevard near the St. Clair River. North of Ravenswood Road, Bus. US 25 split into the one-way pairing of Military Street (northbound) and Electric Avenue (southbound) until the two directions merged on the south side of Port Huron. The business loop continued northward along through downtown Port Huron and across the Black River near its mouth. North of the river. the business loop followed Huron Avenue through the northern side of downtown Port Huron and turned northwesterly onto Pine Grove Avenue. The business loop passed under the approaches to the Blue Water Bridge before terminating at an intersection with US 25.^[40]

In 1963, the route of US 25 through the Port Huron area was realigned. In the process, that highway replaced its

External links

KML file (edit • help)

Template:Attached KML/U.S. Route 25 in Michigan

KML is from Wikidata

• Historic US 25 at Michigan Highways

US Highway 25
Previous state: Ohio	Michigan	Next state: Terminus