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Milepost 31 - CLOSED

Review Highlights
Fascinating insight into the world beneath our feet

The displays at the Milepost 31 Center are brilliant, and really help to interpret the project... read more

Reviewed 28 July 2017
Elizabeth W
Macclesfield, United Kingdom
small museum on history of Pioneer Square and of the Alaska Way Viaduct Tunnel Project

Who would have thought that a small "museum" run by the state Dept of Transportation could be so... read more

Reviewed 23 July 2017
Jason U
Washington DC, District of Columbia
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Traveller Overview
  • Excellent42%
  • Very good53%
  • Average5%
  • Poor0%
  • Terrible0%
Travellers talk about
“big bertha”(3 reviews)
“small museum”(2 reviews)
Milepost 31 provides an inside look at the massive tunnel boring project happening under downtown Seattle. Located in Pioneer Square, the exhibit highlights the history of the area and includes a 10-foot-long model of Bertha, the world's largest...more
211 1st Ave S, Seattle, WA 98104-3443
+1 888-298-5463
Reviews (19)
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All reviewsbig berthasmall museumpioneer squareprojecttunnelviaductgeologymodelengineeringartifactsexplanationwaterfrontphotos
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1 - 10 of 19 reviews
Reviewed 15 August 2017

An exhibit and small museum about the Boring Project that will be done to replace the highway on the waterfront that is there now. Engineers will love it.

1  Thank snooksinKC
Reviewed 28 July 2017

The displays at the Milepost 31 Center are brilliant, and really help to interpret the project. The huge moving wheel especially is a great way of explaining the changes under- and above-ground over 10s of 1,000s of years. Thomas gave an excellent talk in the...More

1  Thank Elizabeth W
Reviewed 23 July 2017

Who would have thought that a small "museum" run by the state Dept of Transportation could be so interesting and such a trip highlight? We stumbled in off the street, quite by accident. The display was engrossing, fascinating, and varied, from focus on geology, local...More

Thank Jason U
Reviewed 22 July 2017

The exhibit itself details the Seattle tunnelling project, there is a model of the boring machine, plans of the park planned to replace the current overhead roads and so forth. In itself it is quite interesting but only really worth a Good. However, and maybe...More

Thank JoeFLondon
Reviewed 18 May 2017

This Center highlights the project to build a traffic tunnel under the City nicknamed Bertha after a previous Mayor. The displays and explanations of the ongoing work are fascinating, but, hand in hand with the process, there is an excellent section celebrating and explaining the...More

Thank bsandrs
Reviewed 21 March 2017

This small visitor center is more like a museum. One of the people working there spent over 30 minutes explaining the "Big Bertha" model and answering our questions. We spent another 30 or more minutes looking over the rest of the exhibits and artifacts. There...More

Thank ReaderPat
Reviewed 8 December 2016

Nice explanations and models of the tunnel project. Staff was very happy to answer all out questions. In the very interesting Pioneer Square section of downtown Seattle.

Thank Mootle
Reviewed 26 August 2016

Milepost 31 is a WSDOT Info center that tells you all about the Big Bertha tunnel dig under the Alaskan Viaduct. They do a great job of explain the project with photos and diagrams, and then they take you on a tour out to the...More

1  Thank Robert S
Reviewed 10 January 2016

If you are near Pioneer Square, make time to stop in. A total delight. I had allocated only about 40 minutes and could easily have spent double the time. The staff were EXCEPTIONALLY friendly and knowledgeable about both the area history and construction technology. Great...More

1  Thank Kendall G
Reviewed 15 December 2015

I saw the pamphlet in my hotel. The most "boring" tour in Seattle. I am an engineer and I thought this has to be an engineering pun. Yep. I chucked. Okay. Don't judge. I had heard about this project through my work. I thought I...More

1  Thank Ryan B
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