Low clearance bridges on Alaska interstates and US highways

4 spots where an interstate or US highway in Alaska has less than 16 ft of clearance. The lowest is 15 ft 5 in on Interstate A-2, Mile Point 168.3.

Posted signs and your permit come first. These are the clearances Alaska reported to the federal National Bridge Inventory in 2025. Repaving, snow and new work can lower them.

Map of Alaska with a pin on each low spot.
Hover a pin to read it, tap it to find it in the list. © Mapbox © OpenStreetMap

Interstate A-1 · 2 under 16 ft

ClearanceWhereCounty
15 ft 9 inUnder Eagle River Access · Mile Point 0.2 · MapAnchorage Municipality
15 ft 9 inUnder Parks Highway · Mile Point 0.9 · MapMatanuska-Susitna Borough

Interstate A-2 · 2 under 16 ft

ClearanceWhereCounty
15 ft 5 inOver Gerstle River · Mile Point 168.3 · MapSoutheast Fairbanks Census Area
15 ft 7 inOver Johnson River · Mile Point 156.1 · MapSoutheast Fairbanks Census Area