M-13 Connector (Michigan highway)
Map of the Bay City area with Conn. M-13 highlighted in red
|Connector route of M-13|
|Maintained by MDOT|
|Length||2.414 mi (3.885 km)|
|South end||I-75 / US 23 near Bay City|
|North end||M-13 near Kawkawlin|
Connector M-13 (Conn. M-13) is a state trunkline highway running 2.41 miles (3.88 km) connecting Interstate 75/US Highway 23 (I-75/US 23) to M-13 near the community of Kawkawlin, just north of Bay City. The Michigan Department of Transportation (MDOT) internally calls the road Connector 13. The freeway was once the northern end of the US 23 freeway in the area before I-75 was built to the northwest and US 23 was rerouted to follow it. When these changes were made in 1967, Conn. M-13 was designated for the freeway stub.
Conn. M-13 starts at exit 164 along I-75/US 23 north of Bay City. At the interchange that marks its southern terminus, the connector route continues to the north while the main I-75 freeway turns northwesterly. About three-quarters of a mile (1.2 km) north, there is an interchange for Wilder Road. Traffic running southbound on the connector that wishes to continue northbound on I-75/US 23 has to use Wilder Road to connect to the latter freeway. The connector route is bordered by fields and residential subdivisions as it continues north to the community of Kawkawlin. The freeway ends at an at-grade intersection with M-13.
Conn. M-13 is maintained by MDOT like other state highways in Michigan. As a part of these maintenance responsibilities, the department tracks the volume of traffic that uses the roadways under its jurisdiction. These volumes are expressed using a metric called annual average daily traffic, which is a statistical calculation of the average daily number of vehicles on a segment of roadway. MDOT's surveys in 2010 showed that the traffic levels along Conn. M-13 were 13,939 vehicles daily south of the Wilder Road and 7,031 vehicles per day north of that interchange. The only section of the freeway that has been listed on the National Highway System (NHS) is from the southern terminus to the Wilder Road interchange. The NHS is a network of roads important to the country's economy, defense, and mobility.
This short freeway was opened in late 1960 or early 1961 as the north end of a new US 23 freeway around Bay City. The freeway was extended farther north to the Standish area in 1967; M-13 was extended north to replace the US 23 designation along the latter's former routing through Pinconning. At that time, the freeway stub north of Bay City became Conn. M-13.
|0.000||0.000||I-75 / US 23 – Saginaw||Exit 164 on I-75/US 23; northbound entrance to Conn. M-13 and southbound exit to I-75/US 23|
|0.702||1.130||Wilder Road||Provides southbound Conn. M-13 access to northbound I-75/US 23 via Wilder Road|
|2.414||3.885||M-13 / LHCT||At-grade intersection; freeway ends|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Michigan Department of State Highways (1967). Michigan Water-Winter Wonderland: Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan Department of State Highways. §§ I12–J12. OCLC 12701120.
- Michigan Department of State Highways (1968). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan Department of State Highways. §§ I12–J12. OCLC 12701120. Retrieved August 12, 2017 – via Archives of Michigan.
- Michigan Department of Transportation & Michigan Center for Shared Solutions and Technology Partnerships (2009). MDOT Physical Reference Finder Application (Map). Michigan Department of Transportation. Retrieved April 6, 2011.
- Staff (May 1, 2008). "Appendix C: State Trunkline Connector Routes" (PDF). Michigan Geographic Framework. Michigan Department of Information Technology. Archived from the original (PDF) on January 8, 2011. Retrieved October 15, 2008.
- Google (April 8, 2011). "Overview Map of Conn. M-13" (Map). Google Maps. Google. Retrieved April 8, 2011.
- Bureau of Transportation Planning (2008). "Traffic Monitoring Information System". Michigan Department of Transportation. Retrieved May 28, 2012.
- Michigan Department of Transportation (2005). National Highway System: Bay City Urbanized Area (PDF) (Map). Lansing: Michigan Department of Transportation. Retrieved January 1, 2011.
- Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Federal Highway Administration. Retrieved July 1, 2012.
- Michigan State Highway Department (1960). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § J12. OCLC 12701120, 81552576. Retrieved August 12, 2017 – via Archives of Michigan. (Includes all changes through July 1, 1960)
- Michigan State Highway Department (1961). Official Highway Map (Map). [c. 1:918,720]. Lansing: Michigan State Highway Department. § J12. OCLC 12701120, 51857665. Retrieved June 17, 2017 – via Archives of Michigan. (Includes all changes through July 1, 1961)
- Conn. M-13 at Michigan Highways