This interchange also marks the western terminus of M-17, and the eastern end of a concurrency with Business Loop Interstate 94 (BL I-94).

US 23 follows Washtenaw Avenue along a five-lane street past commercial areas to County Farm Park and then continues as a four-lane roadway through residential neighborhoods.

Washtenaw Avenue turns more northwesterly at the intersection with Stadium Boulevard southeast of Burns Park.

It parallels part of the Huron River before ending at an interchange with the M-14 freeway about a mile and a third (2.2 km) north of downtown.

The freeway runs through a wooded area and then after about one mile (1.6 km), it meets US 23 at an interchange in Ann Arbor Township that marks the northern terminus of the business loop.

At that time, the former routing of US 23 through downtown and a section of freeway north of the Huron River was redesignated as Bus.

At the time it was turned over to local control, it was signed as business spur from downtown to the US 23 freeway, but the state maintained a southern section that previously completed the route as a loop.

At the intersection with LeRoy Street, the unsigned business loop turned northward and across the Shiawassee River.

On the northern end of downtown at the intersection of LeRoy Street and Silver Lake Road, it resumed.

US 23 followed Silver Lake Road westward out of downtown through a residential area and northwesterly to an interchange with US 23 at exit 79.

The former route of US 23 along Shiawassee Avenue and LeRoy Street in Fenton was redesignated as a business loop at this time, and the state assumed control of Silver Lake Road to connect it back to the freeway northwest of town.

US 23 was shifted to use Owen Road between a new freeway interchange and the rest of the business loop at Shiawassee Avenue.

[18] After this closure, the business loop was split into two sections, and only the northern one was retained as a signed state highway.

[21][23] In 1953, the initial eastern bypass of Saginaw was built as a two-lane highway, and the former routing through downtown was redesignated Bus.

[24][25] Twenty years later, with the opening of the new freeway for Interstate 75 (I-75) near Bay City, US 23 was rerouted to follow I-75.

[33] Farther north, the business loop passes the eastern end of the Rogers City Airport and turns northwesterly, parallel to, but inland from, the Lake Huron shoreline.

Four blocks later, the business loop comes the closest to Lake Huron in another residential area before turning to the west.

[31][32] The business route carries the section of the Lake Huron Circle Tour (LHCT) through Rogers City.

[34][35] Just two years later, M-65 was pared back to end at US 23 southeast of Rogers City, and the section of M-65 through downtown was renumbered as Bus.