Does the City manage the street trees along BL-94 and M-63?

It does not.  Business Loop 94 (Lake Shore Dr.) and Michigan 63 (Niles Ave., Main St.) are considered State highway trunk lines.  Questions or concerns about street trees along these roads may be directed to the Michigan Department of Transportation (MDOT).  The local MDOT headquarters in Coloma may be reached at (269) 849-1165.