The official web site is now in its complete configuration (it was preliminary until recently) and project schematics are posted.http://www.35express.org/index.php
However, the schematics dated 1/11/2013 have a major inconsistency with other information on the web site, and that makes me think that the schematics are not up-to-date.
* Schematics 2 and 12 show the Belt Line road intersection. The schematics show Belt Line Road and the IH-35E frontage roads being sunk below ground level with IH-35 generally on the same elevation as now. But the web site says "Belt Line Road will be elevated to the current height of I-35E, and I-35E will be raised approximately 25 feet above its current elevation."
* Schematics 1 and 2 show a minimum for four regular traffic lanes in each direction between IH 635 and the Bush Turnpike. I recall seeing information that there would be only three regular lanes each way, and the description for the south section on the web site does not mention added capacity.
* All four direct-connector ramps will be built on the north side of the SH 121/Sam Rayburn tollway interchange. The from SRT EB to IH 35 NB which will be very long, starting at Lake Vista Drive and going more than halfway to Round Grove road.
* The Dickerson Parkway construction seems strange and unnecessary. It dead-ends into the Bush Turnpike frontage road just west of the new overcrossing. Maybe this is intended to make the land suitable for real estate development.
* There is very little right-of-way acquisition except at Belt Line Road, on the north side of the 121/SRT interchange and at Lake Lewisville.
* The collector-distributor section between Bush Turnpike and the Sam Rayburn Turnpike will be squeezed into the existing right-of-way
* All the cross section views show 11-foot-wide lanes. This is a disturbing trend on many new TxDOT projects, including US 290 in Houston. I'm guessing FHWA must be approving the narrow lanes. Does anyone know if FHWA encourages 11-foot-wide lanes now?
* Only one new bridge, at FM 407/Lake Park Road, has the width specified in the original design (which was 4-2T-2T-4)