One connected to the carferry docks in Muskegon, running concurrently with part of Business US 31 (Bus.

South of Norton Avenue, Seaway Drive turned eastward along the southern edge of Muskegon Heights.

US 31 ran along the northern edge of Mona Lake and crossed the Black Creek in Norton Shores.

Southwest of the lake, the business route came to an end at the interchange along US 31 that marked the western starting point of I-96.

[12][13] On December 12, 1962, the freeway that is now I-96 was initially completed across the state of Michigan from Muskegon to the Detroit area.

The western terminus was at the corner of Grand River Avenue and Kent Street in downtown Portland.

[18] The route was first marked on state highway maps in 1982 along the full mile and a quarter (2.0 km).

The western terminus is at I-96's exit 90 northwest of Lansing in Watertown Township in Clinton County near the I-96/I-69 junction.

The area around the airport is commercial, but east of there North Grand River Avenue runs through residential neighborhoods.

The business loop turns and splits onto the one-way pairing of the three-lane Cedar (southbound) and Larch (northbound).

The two highways run concurrently south of Michigan Avenue as Cedar Street angles southeasterly.

[24][29] This rerouting would last until 1966 when it was transferred back to the original routing with the completion of the US 127 freeway between Lansing and Mason.

BL I-96 runs concurrently with M-59 along a four-lane divided highway for about a one mile (1.6 km) before turning southeasterly onto Grand River Avenue near the Livingston County Airport.

The business loop passes through a residential neighborhood on the western side of Howell before entering downtown.

In downtown, BL I-96 runs along a four-lane street and meets the northern end of the unsigned M-155 at Michigan Avenue.

Southeast of downtown, the business loop passes through more residential areas before following a commercial corridor to a partial interchange with I-96 south of Lake Chemung.

At the time, a new limited-access connector road was constructed between I-96 and Grand River Avenue, providing access for the business loop and M-59 to I-96.

At the intersection with Shiawasee Road, Grand River Avenue turns southeasterly into downtown Farmington.

US 16)[43][44] The original plans for I-96 called for it to replace US 16 and to run parallel to Grand River Avenue all the way from Farmington into downtown Detroit.

In 1959, the Farmington bypass freeway was given the I-96 designation in addition to the US 16 moniker,[45] and the business route was redesignated as BL I-96 two years later.

Simultaneously, the BL I-96 designation through downtown Farmington was removed,[37][38] and Grand River Avenue became an unsigned state trunkline, a status it has retained to this day.

About a mile and three-quarters (2.8 km) along, the highway crossed I-96 again, and I-96 from here into the downtown area paralleled Grand River Avenue.

In the North Corktown neighborhood, Grand River Avenue crossed M-10 (Lodge Freeway) near the MotorCity Casino.

About a half mile (0.7 km) past M-10, Old BS I-96 crossed I-75 (Fisher Freeway) and entered Downtown Detroit's Foxtown neighborhood.

[48][49] In 2004, the state transferred several blocks at the eastern end of Grand River Avenue to the City of Detroit.