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Filtered on: Building-a-Freeway

  • 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).

  • Building a Freeway: Pre-wetting the soil leads to solid foundation

    October 5, 2011
    When ADOT has a freeway to build, many steps must be taken long before any asphalt is paved. One of those initial tasks involves pre-wetting the soil, which entails pretty much exactly what you think it does … crews put sprinkler systems into place and water the dirt!

  • From start to finish: How ADOT builds a freeway

    October 4, 2011
    When ADOT builds a road, the work gets started years (sometimes decades) ahead of any real construction … It all begins with the planning phase, which includes everything from determining where a new roadway is most needed to taking a look at available funding.