One lane closed on the Alaska Highway at the Johnson River Bridge, through Sunday

One westbound lane of the Alaska Highway is closed at the Johnson River Bridge, about 42 miles south of Delta Junction, through Sunday evening. Drivers on the Tok–Delta Junction run should expect single-lane traffic control and slow down through the zone.

It's a small delay on a road that carries a lot. The Alaska Highway is the state's main overland link to the Lower 48 — the route for most of the freight trucked into Alaska. The closure hasn't been explained, but it lands on a bridge that's already on its way out: Johnson River Bridge #518 is one of the aging, load-restricted spans on this stretch, slated for full replacement under a $108.7 million federal project that will also rebuild the nearby Gerstle River Bridge.

Check 511.alaska.gov before you head out — the reopening time is an estimate, not a promise.