AARoads Forum
Regional Boards => Mid-South => Topic started by: kernals12 on May 11, 2022, 06:38:17 PM
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With much less controversy than in Austin, TxDOT is undertaking a massive expansion of I-35 in San Antonio. They're double decking 10 miles of it northeast of I-410 with 3 non-tolled express lanes in each direction. The groundbreaking ceremony was held today (https://www.tpr.org/texas/2022-05-11/ground-broken-on-i-35-double-decker-project) and construction on the $1.5 billion project will last until 2027.
(https://i.imgur.com/PUkM3V1.jpg)
Combined with the widening of Loop 1604 from 4 lanes to 10, San Antonio is really going agro on its traffic problems.
It does beg the question though of why they can't do this for I-45 in Houston
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Is this considered “double decking?” To me they’re just adding elevated express lanes. Double decking would technically be placing a deck over the existing highway.
Either way this is an excellent project. I wish they’d do this on US-101 from downtown LA to Topanga Canyon.
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https://www.aaroads.com/forum/index.php?topic=24909.0
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Is this considered “double decking?” To me they’re just adding elevated express lanes. Double decking would technically be placing a deck over the existing highway.
Either way this is an excellent project. I wish they’d do this on US-101 from downtown LA to Topanga Canyon.
Aren't the elevated structures going to be "a deck over the existing" frontage roads?
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Is this considered “double decking?” To me they’re just adding elevated express lanes. Double decking would technically be placing a deck over the existing highway.
Either way this is an excellent project. I wish they’d do this on US-101 from downtown LA to Topanga Canyon.
Yeah it's still considered a double-deck because the elevated lanes will still fly directly above the ground lanes. The difference between this and the original double deck sections of I-10 between downtown and I-410 is that the upper level of the upcoming I-35 section is limited exclusively to express traffic (nonstop from downtown to the county line) and lower levels are for local traffic who intend to enter the freeway and exit after a short distance. The original sections on I-10 had on and off ramps from both levels. Also the original I-10 eastbound and westbound upper levels are closer apart (if you flew over it in a helicopter, you couldn't easily see the lower level); whereas on the new I-35 section there will be a considerably wider gap between the northbound and southbound upper levels that will expose the lower level even from a birds-eye view.