Quote:
Originally Posted by IluvATX
All this is hard for me to follow. Is there a link or plans for the final design of I35? Also what is going on with Mopac? Sorry if I sound uninformed.
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The only final designs are frontage road / intersection based which also requires changes to on/ramps and merge lanes. William Cannon, Stassney and Oltorf are all under construction. The 51st work is almost done. The 183 interchange / St Johns Overpass is suppose to start in the next year.
Riverside is suppose to start in less than 2 years but I don't know if the proposed 35 announcement might affect that. I highly doubt the Riverside bridge work is postponed. However, the work to re-align the mainlanes at riverside so you don't have a slowdown due to the curve might be cut from this project due to uncertainty with how they are going to be doing the mainlanes. EDIT: It looks like the previous plans have been thrown completely out the window and all references to it have been deleted. Huge bummer to anyone who is hopeful for light rail in south austin because this project HAS to happen for rail in that area. Even the 2014 rail vote was contingent on the Riverside overpass being re-built. TXDOT made a ton of changes so give me a little bit to fix all the links. I took them from a post I made a few weeks ago.
By the way, they are going to be closing the 35NB to 183NB ramp for at least a couple months since they are demoing and rebuilding half of it. I don't know if they have decided how they are going to do the detour. They could build the 35SB to 183NB ramp first and then direct people to continue past the intersection exit Runberg, U-Turn and then put in a temporary asphalt entrance ramp to the direct connector from the frontage road. It sounds like a nightmare but it should keep cars in motion and you wouldn't have cars blocking the 35 entrance ramp before the ramp starts.
Slaughter Overpass
Still under study. I would not be surprised to see a major overhaul. A Diamond interchange would be ideal but I don't think they can do that unless they convert the overpass into an underpass which is possible. The Diamond Interchange at Slaughter and Mopac is going to be amazing if it's not derailed again by Save Our Springs and that Arizona company that sues highway projects all over the country. Did anyone see what they pulled at the last council meeting? I digress...
William Cannon / Stassney Area (Under Construction)
-Reconstruct frontage road bridges over Williamson Creek
-Reconstruct bridge structures at Stassney Lane and William Cannon Drive
-Construct new U-turns at Stassney Lane and William Cannon Drive
-Widen mainlanes to incorporate shoulders and extended entrance/exit lanes
-Reconfigure ramps
-Improve bicycle and pedestrian accommodations
-Add new safety and high mast lighting
-Fact Sheet:
http://ftp.dot.state.tx.us/pub/txdot...fact-sheet.pdf
-Project Layout:
http://ftp.dot.state.tx.us/pub/txdot...ect-layout.pdf
-Schematic:
http://ftp.dot.state.tx.us/pub/txdot.../schematic.pdf
-Meet the Contractor Open House Presentation:
http://ftp.dot.state.tx.us/pub/txdot...esentation.pdf
-Construction Info:
http://ftp.dot.state.tx.us/pub/txdot...nstruction.pdf
Oltorf Area (Under Construction)
-Reconstruct Oltorf Street bridge structure
-Improve entrance and exit ramps and frontage roads
-Construct new auxiliary lanes, or extended entrance/exit lanes, for mainlanes and ramps
-Add U-turns in both north and southbound directions at I-35 and Oltorf Street
-Improve bicycle and pedestrian accommodations along the I-35 frontage roads in each direction within the project limits
-Schematic:
http://ftp.dot.state.tx.us/pub/txdot.../schematic.pdf
-Construction Info:
http://ftp.dot.state.tx.us/pub/txdot...nstruction.pdf
Riverside Area (Construction 2018/19)
PREVIOUSLY ANNOUNCED CONSTRUCTION SCHEDULE AND SCHEMATICS CANCELLED
I-35 at 51st (Under Construction)
-Realign southbound frontage road
-New southbound intersection bypass lane
-New roundabout at the southbound frontage road of I-35 and 51st Street
-Reconfigure ramps
-Improve bicycle and pedestrian accommodations
-Schematic:
http://ftp.dot.state.tx.us/pub/txdot.../schematic.pdf
-Construction Info:
http://ftp.dot.state.tx.us/pub/txdot...nstruction.pdf
-Roundabout Visualization
https://youtu.be/T83ogwpkfLk
-Fact Sheet
http://ftp.dot.state.tx.us/pub/txdot...fact-sheet.pdf
I-35 from Rundberg Lane to US 290 East and 183+35 Interchange Direct Ramps (Construction start: early 2018)
-Add three flyovers at the I-35/US 183 interchange from: I-35 southbound to US 183 southbound, US 183 northbound to I-35 northbound, I-35 southbound to US 183 northbound
-Improve the existing I-35 northbound to US 183 northbound flyover
(Improve my ass. They are Demoing and Rebuilding Half of it)
-Rebuild St. Johns Avenue bridge (Includes sweet bypass lanes)
-Construct new frontage road U-turn in both directions
-Construct new intersection bypass lane under the St. Johns bridge in both directions
-Add extended entrance/exit ramps
-Reconfigure and improve ramps and shoulders
-Improve bicycle and pedestrian accommodations
-Fact Sheet:
http://ftp.dot.state.tx.us/pub/txdot...fact-sheet.pdf
-Project Layout:
http://ftp.dot.state.tx.us/pub/txdot...ect-layout.pdf
-Schematic:
http://ftp.dot.state.tx.us/pub/txdot.../schematic.pdf (Includes a Schematic of 183 before and after interchange)
I-35 at Parmer Lane (Construction Winter 2018/2019 if funding available)
-Replace the traditional intersection with a diverging diamond intersection
-Add a southbound collector-distributor road, or intersection bypass lane
-Reconstruct two entrance and exit ramps south of Parmer Lane
-Construct right-turn lanes at the intersection of Lamar Boulevard and Parmer Lane
-Construct dual left-turn lanes from Parmer Lane to Lamar Boulevard
-Improve bicycle and pedestrian accommodations
-Schematic:
http://ftp.dot.state.tx.us/pub/txdot.../schematic.pdf
-Fact Sheet:
http://ftp.dot.state.tx.us/pub/txdot...fact-sheet.pdf
I-35 at Wells Branch Parkway (Construction anticipated summer 2020 if funding there)
-Replace the traditional intersection at Wells Branch Parkway and the I-35 frontage roads with an SPUI
-Add intersection bypass lanes along I-35 frontage roads
-Improve the traditional intersection at Wells Branch Parkway and FM 1825 with additional turn lanes and traffic signal timing
-Reconstruct the I-35 mainlane bridge over Wells Branch Parkway
-Reconstruct four entrance and exit ramps on I-35 north and south of Wells Branch Parkway
-Improve bicycle and pedestrian accommodations
-Single Point Urban Interchange Fact Sheet:
http://ftp.dot.state.tx.us/pub/txdot...-factsheet.pdf
I-35 from SH 45N to Grand Avenue Parkway (Construction anticipated winter 2018/2019 if funding there)
-Reconfigure the northbound entrance and exit ramps
-Construct an auxiliary lane, or extended entrance/exit lane, on the northbound I-35 mainlanes under SH 45N
-Construct an extended entrance/exit lane on the northbound frontage road
-Fact Sheet:
http://ftp.dot.state.tx.us/pub/txdot...fact-sheet.pdf
-Schematic:
http://ftp.dot.state.tx.us/pub/txdot.../schematic.pdf
The entrance/exit/merge lane work is going to make a much bigger difference than people think. This is especially true in areas where they are eliminating entrances/exits and putting in bypass lanes at certain interchanges.
For Example, on 35SB there is only going to be 1 exit for 51st and Airport. However, there will be a lane that you can use to bypass the 51st interchange (now a roundabout) so you aren't waiting at the light. Basically, there is a new focus on keeping cars on the frontage roads more but decreasing the number of stops and increasing the intended use for U-turns.
This is going to be especially evident on the current 183 south project. They are eliminating the intersections at 51st, Techni Center and Bolm road. Instead, you travel further to the next intersection and take a U Turn where you almost always have your own acceleration lane. In the case of 183, they are adding a U-Turn only intersection halfway between Bolm and Techicenter. Unfortunately, work on the Lavender Loop intersections going to Cesar,Airport and 7th aren't a part of the study. People will be happy to learn that there is a COMPLETE rebuild of the ramps from Cesar,Airport and 7th to 183 southbound. The current drive that they use is becoming pedestrian only.
Sorry...I could go on and on about 183 east and highways in general. Not that many people care.
(formally brando)