Archives

Filtered on: Bridges

  • Building a freeway: box girders

    January 9, 2013
    As you can see in the video above, girders are the concrete and steel beams that enable the bridge to support the roadway and the vehicles on top of it. They’re vital to the design of a bridge, but not all girders are the same…

  • An update on the I-17 bridges in Munds Park

    January 30, 2012
    Last week we received a blog comment requesting an update on the I-17 bridges that span over Pinewood Boulevard in Munds Park. We thought it was a great suggestion and figured a blog post was in order!

  • ADOT takes a look back at 2011

    January 3, 2012
    The new year officially is here, but before we dive into 2012 we’re going to take a quick look back. ADOT’s Public Information/Media Relations team came up with a great list of the state’s major transportation accomplishments from 2011 and we thought we’d share it here on the blog!

  • Building a Freeway: Sand Jacks and False Work

    November 17, 2011
    Last month, as part of our Building a Freeway series, we told you about the massive underground support substructures that help give bridges strength. Next up in the series is an important -- but temporary -- structure that’s used as crews build a bridge, tunnel or even a box culvert.

  • Building a Freeway: Massive underground caissons give bridges strength

    October 21, 2011
    You know when you drive under or over a freeway bridge that it’s a massive structure… There are the two abutments (the upright supporting structures at each end that carries the load of the bridge span), there are usually center columns or piers, and, of course, the girders and the bridge deck (the part you actually drive across).

  • (Re)-bridging the gap: Mescal/J-Six Bridge set to open

    September 19, 2011
    It’s been just about six months, but today the residents of Mescal and J-Six Ranch got their bridge back and can finally say goodbye to one lengthy detour!

  • Chance for tremor is slim, but bridges built to endure

    September 14, 2011
    The recent quake near Washington, D.C. served as a reminder that the earth occasionally moves in U.S. locales outside of California. At ADOT, we know that Arizona is not immune to seismic activity, either.

  • Tiny camera captures bird’s eye view of girder installation

    August 29, 2011
    If you’ve been following along in the blog, you know that we’ve been chronicling ADOT’s reconstruction of the Mescal/J-Six bridge in southern Arizona since it was severely damaged when two semi trucks collided underneath it back in March. Completion of the fast-tracked bridge reconstruction is slated for later this month.

  • Oversize load safely crosses bridge, makes it to destination on time

    August 22, 2011
    Now that you know a little about the ADOT permitting process involved with moving oversize loads, take a look at the latest heavy haul to cross Arizona’s highways. The video above shows just a portion of the journey this 285-ton load took beginning the first week of August.

  • A new look at memorable I-10 bridge demos

    August 19, 2011
    Last week we gave you an update on how the new Mescal/J-Six bridge is coming along... You might also remember that the night the damaged bridge was taken down, the old Marsh Station bridge was also demolished just a few miles away. It was a huge project that required completely shutting down I-10 for the night.