Building a Freeway

Loop 303 and Greenway Intersection
12/14/2011

New 303/Greenway construction bypass built in 43 hours

Accommodating existing traffic is a key priority when ADOT builds a freeway … Depending on the project, that can mean working out a construction schedule that takes rush hours into account or hiring extra crews to flag and direct traffic through the site.
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Building a Freeway
Construction
Loop 303
Moving Dirt
Time Lapse
Video
ADOT Heavy Machinery used to move dirt.
12/6/2011

Building a Freeway: Moving Dirt

Before you can build a freeway, you’ve got to move a little dirt... Make that a LOT of dirt, especially in the case of the Loop 303 project under construction right now in the West Valley.
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Building a Freeway
Loop 303
Moving Dirt
Video
False Work used during bridge construction
11/17/2011

Building a Freeway: Sand Jacks and False Work

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.
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Bridges
Building a Freeway
False Work
Loop 303
Time Lapse
Video
Workers construct massive caissons
10/21/2011

Building a Freeway: Massive underground caissons give bridges strength

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).
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Building a Freeway
Loop 303
Video
Prewetting the soil at a construction site
10/5/2011

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

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!
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Building a Freeway
Loop 303
Video
Worker running construction equipment on Loop 303
10/4/2011

From start to finish: How ADOT builds a freeway

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.
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Building a Freeway
Loop 303

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