Westchase District issued the following announcement on Sept. 7.
Construction crews have installed the first of several new mast arms that will be put up at intersections on Westheimer Road. It's all part of the Westheimer streetscape improvements. The old span wire signals will be removed and replaced with these powder black mast arms, giving functional and aesthetic improvements at all the Westheimer intersections throughout Westchase District.
Original source can be found here.
Source: Westchase District