Since completion Interstate 69 in Michigan

new signage being erected in 2011 reflect reconfigured interchange near blue water bridge in port huron

on july 23, 2001, michigan legislature declared i-69 exit 105 in shiawassee county east exit 135 in genesee county named pearl harbor memorial highway. in october 2001, legislature consolidated various legislation created memorial highway designations in state. public act 142 of 2001 extended merged chevrolet–buick freeway name of i-69 in genesee county, , restored david dunbar buick freeway name i-475. i-69 recreational heritage route (now pure michigan byway) created on october 8, 2004, follow freeway in branch , calhoun counties. branch county segment dedicated purple heart trail on july 17, 2006.

in 2011, construction began widen i-94/i-69 approaching blue water bridge, project completed in 2012. widening project added dedicated lanes local traffic , blue water bridge traffic new permanent welcome center expected open in 2015, replacing temporary 1 near capac. lane configuration changes have confused drivers in area, outdated gps devices, problem first noted department preparing reopen freeway in october 2012. result, mdot installed updated signs complete american , canadian flags prevent drivers heading canada mistake.

in late 2013, construction began reconstruct , reconfigure i-94/i-69 interchange near port huron. project improve 3.7 miles (6.0 km) of freeway, replace several bridges , ramps , cost $76 million. in june 2014, mdot closed ramps i-69 eastbound bl i-69 through interchange until later in year. project completed in september 2015.