Since the summer, beam settings and deck operations have actively taken up construction schedules along the project to establish the overhang portions of the general purpose lanes (GPLs).
As new sections of the GPLs are gradually built, a series of lane shifts will occur from this month until next spring to move traffic to the completed overhanging portions of the highway bridges. Moving traffic inward onto these overhang sections will make room for crews to work on the outer portions of the GPLs, enabling construction on walls, traffic rails, ramps and other items depending on the location.
To get a better idea of these upcoming inward lane shifts, refer to the cross section of IH-635 below.
LBJ Express Cross Section of IH-635
Above: A cross section of the future LBJ Express project, with TEXpress Lanes in the depressed section, and the free general purpose lanes overhanging above either sides of the TEXpress Lanes. These overhang portions are called cantilever structures. These cantilever sections are what are currently being built in many areas of the project. Once built, traffic will be moved inward in sections, so that crews may construct the outer portions of the highway.
The circled areas in the cross section show these overhanging “cantilever” sections of the GPLs, which are essentially the parts of the highway bridges being established over the months. The first lane shift to move traffic inward will occur this Saturday evening, Nov. 8, moving traffic on the westbound general purpose lanes from just east of Midway Rd. to just west of Rosser Rd. Associated closures include various lanes on the westbound lanes with at least one lane remaining open at all times.
Other Sections to be shifted inward by Spring 2015 include:
- Eastbound main lanes between Josey Lane and just east of Webb Chapel Rd. (tentative, Dec. 2014)
- Eastbound main lanes from Rosser Rd. to just east of Midway Rd.
- Eastbound and westbound main lanes between Midway Rd. and DNT
- Westbound main lanes between Preston Rd. and the DNT (tentative, Jan. 2015)
- Eastbound main lanes between DNT and Preston (tentative, Feb. 2015)
- Westbound main lanes between Josey Lane and Rosser Rd.
Lanes Taking Shape
Below are just a few pictures taken within the last two months of these overhang portions being built. By spring 2015, traffic between Webb Chapel all the way to Preston Rd. will all have been shifted inward to construct the outer sections.
West of Welch Rd.
West of Welch Rd.
From below, west of Webb Chapel
From below, near Marsh.
From below, near Midway Rd.