ontario highway commonly referred highway historically known bay road maintained highway canadian province ontario highway connects eastern end highway midland ending highway forms system north highway connects small towns route bypasses short distance signed north south route east west route midland rural portions highway feature posted speed limit mph dropping mph built areas entire route patrolled highway established early highway section running east highway route numbering introduced highway routed eastern northern shores later midland bypassed 1960s section south highway transferred redesignated durham regional highway majority highway follows historic bay road constructed connect important naval ports time route description highway begins future location highway south community town travels north joins highway southern edge highway travels west signed concurrently highway north point highway separates travels east highway designated highway continues north following eastern northern shores bypassing curving northwest bypasses south shares routing highway northwards approximately kilometres interchanges interchange highway branches northwest joins highway interchanges concurrency signed designation continues north highway continues west victoria harbour port highway ends junction western town limits midland history oldest portion highway originally known later road connecting modern sites trail governor surveyed ordered widened wagon use area settled increasing need land connection south arose new road proposed bay near february residents formally petitioned government construct route bay road bay opened rough wagon road narrows separating lake surveyed early 1840s causeway bridge constructed years followed portion route construction second half decade highway introduced provincial highway system january highway initially known road numbered summer route followed present day highway travelled east highway assumptions carried june july extended highway east concurrent highway route highway renumbered highway time highway later extended north accomplished assumptions august majority route assumed miles assumed december extending highway far august highway extended midland majority route paralleled existing railway constructed native highway remained decades mid-1960s constructed november bypass opened routing highway east portions route highway renumbered highway highway remained unchanged decades short portion southern end highway decommissioned late 1990s april portions highway south transferred subsequently redesignated road durham regional highway prior highway highway routed highway instead followed separate route parallel road major intersections following table lists major junctions highway noted
Ontario Highway 12