Archives

Filtered on: Bridges

  • 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.

  • Cleaning, maintenance all part of I-10 tunnel upkeep

    August 18, 2011
    With roughly 240,000 vehicles driving through it each day, the I-10 Deck Park Tunnel needs the night off every once in a while for a good, thorough scrub! Just about every four months, the tunnel is closed to traffic in order to allow crews the chance to wash the walls, maintain the ventilation systems and check on the tunnel’s 3,700 light fixtures (about 150-200 light bulbs are changed out each quarter!).

  • Repairs to damaged bridge set to finish by fall

    August 10, 2011
    The new Mescal Road/J-Six interchange is taking shape! The Cochise County bridge will soon reunite two communities that were unexpectedly disconnected after trucks collided beneath the old overpass in March.

  • ADOT to begin work on replacement bridge soon

    June 13, 2011
    Talk about a quick turnaround … it’s been just three months since a fiery crash destroyed the Mescal Road/J-Six Ranch Road bridge in Cochise County and already ADOT has approved a contract to rebuild and reopen the bridge this fall.