Traveler Information API
The Traveler Information Application Programming Interface is designed to provide
third parties with a single gateway to all of WSDOT's traveler information data.
To use WSDL services you must be assigned an Access Code. Please enter your email
address to receive your code. Your email address will not be shared and will be
used only to notify you of changes to our services.
This Bridge Vertical Clearance Trip Planner is a guide for vertical clearances, but because of physical changes
to highways and other possible inconsistencies due to natural phenomena (expansion and contraction of highway
facilities due to temperature, natural or unnatural material deposition on the pavement, other transient and
lasting unforeseen events, etc.), new construction, pavement overlays, lane reconfiguration, etc, it cannot be
guaranteed. As stated on all permits in accordance with state law, the operator is responsible to identify,
navigate and clear all obstructions. WAC 468-38-070 states it is the responsibility of the permit applicant
to check, or prerun, the proposed route and provide for safe maneuvers around the obstruction or detours as
necessary. Note that the lane in which the maximum and minimum clearances occur are not listed. This must be
determined by the operator. In accordance with state law, the owner or operator of a vehicle or combination of
vehicles shall exercise due care in determining that sufficient vertical clearance is provided upon the public
highways where the vehicle or combination of vehicles is being operated. Also note that the clearances displayed
are approximately three inches less than the actual measured clearances. This adjustment is intended to enhance
safety and increase the margin of error for judgments made by highway users hauling oversize loads. For that
reason, and due to the variations in structure clearance partially cataloged above, such users should not assume
that clearance is in excess of what is published, and should utilize check and prerun methods to assure safe passage.