Tacoma traffic & road conditions

Tacoma traffic and road questions

Where does Tacoma Trekker's traffic information come from?

Traffic flow readings, highway alerts, camera images, travel times, mountain pass conditions, roadside weather readings, toll rates and ferry information all come from the Washington State Department of Transportation's Traveler Information APIs. Tacoma Trekker organizes and presents that official information; it is an independent Tacoma visitor guide and not a government transportation agency.

How current is the traffic information on this page?

Each block shows when it was last checked and when it will recheck. Traffic flow is refreshed about every 90 seconds, highway alerts and travel times about every two minutes, mountain passes and road weather about every ten minutes, and camera lists a few times a day. Nothing is labelled live unless the underlying WSDOT reading is current, and cached readings always show their own timestamp.

Which Tacoma highways are covered?

The corridors visitors and commuters actually use around Tacoma and Pierce County: I-5, SR 16 across the Tacoma Narrows Bridge, I-705 into downtown, SR 7 toward Mount Rainier, SR 167, SR 512, SR 509, and nearby routes such as SR 302, SR 163, SR 410 and SR 161 where WSDOT publishes data.

How long does it take to drive from Tacoma to Seattle?

It varies enormously by time of day, so Tacoma Trekker never quotes a fixed number. WSDOT publishes travel times for monitored I-5 segments rather than a single Tacoma-to-Seattle time, so the Popular commutes section shows the actual segments — Tacoma to Federal Way, then Federal Way to downtown Seattle — with WSDOT's current and typical minutes for each.

Are the traffic cameras live video?

No. WSDOT publishes still snapshot images that are replaced periodically. You can request a fresh set of snapshots, but there is no continuous video stream and WSDOT does not publish a capture time for each image.

What happens if the WSDOT feed goes down?

Each section fails on its own, so one endpoint going quiet does not break the page. The affected block says that current WSDOT data is temporarily unavailable and links to the official WSDOT page. No condition is ever estimated or invented to fill the gap.

Does this cover roads inside Mount Rainier National Park?

No. WSDOT reports on state highways up to the park boundary, including SR 706, SR 410 and SR 123 and the Chinook and Cayuse passes. Roads inside Mount Rainier National Park, including the road to Paradise, plus entrance fees, timed-entry reservations and park closures, are reported by the National Park Service, which Tacoma Trekker shows separately in the Mount Rainier guide.