WNHC787 AM 530 Mackinaw City / AM 1610 St. Ignace

Travelers Information Service AM Radio

Usage: Information on Mackinac Bridge Conditions; Travelers Information for the cities of St. Ignace and Mackinaw City

Web sites:

ERP: 10 watts (both transmitters)

Service: Public Safety Pool, Conventional

Class: Base

More Tech Info: FCC, RadioReference.com

Owner: State of Michigan

Telephone: (906) 643-7600



  • WNHC787 operates with two transmitters, one each at each end of the Mackinac Bridge.

Transmitter locations:

1. AM 530 Mackinaw City; South of the bridge along I-75 (Emmet County)


2. AM 1610 St. Ignace; Toll Booths at north end of Mackinac Bridge (Mackinac County)




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