Low clearance bridges in King County, Washington

8 spots where an interstate or US highway in King County has less than 16 ft of clearance, lowest first. The lowest is 14 ft 9 in on I-5, 1.7 N Junction SR 520. 4 are under 15 ft.

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

Map of King County, Washington with a pin on each low spot.
Hover a pin to read it, tap it to find it in the list. © Mapbox © OpenStreetMap
ClearanceWhereHighway
14 ft 9 inUnder NE 50th Street · 1.7 N Junction SR 520 · MapI-5
14 ft 9 inOver S FK Skykomish River · 8.9 E Snohomish Co · MapUS-2
14 ft 11 inUnder Denny Way · 1.6 N Junction I-90 · MapI-5
14 ft 11 inUnder Yale St Ramp · 1.8 N Junction I-90 · MapI-5
15 ft 3 inUnder Roanoke Street · 0.1 N Junction SR 520 · MapI-5
15 ft 7 inUnder 8th Avenue · 1.2 N Junction I-90 · MapI-5
15 ft 8 inUnder Lake Washington BV · 3.8 N Junction SR 900 · MapI-405
15 ft 10 inUnder SR 520 W-S Ramp · 0.1 N Junction SR 520 · MapI-5