A stretch of Highway 17 near Marathon is closed in both directions following a collision early this morning.

The closure is in place between Peninsula Road — the former Highway 626 — and Marathon, with all lanes currently blocked.

Officials listed the incident at approximately 7:02 a.m., noting that a tractor-trailer unit is blocking the highway. No timeline for reopening has been provided and no detour information has been issued.

Details on the incident, including potential injuries or how many vehicles were involved, are not yet known.

Drivers are being advised to avoid the area and expect delays. Updates are expected as more information becomes available.