THE TUNNEL BENEATH THE DEAD CHRONICLE BUILDING IS NOW OPEN AGAIN Management for 717 Texas (or Calpine Center, if you’re less of a fan of numerically-forward tower vernacular) just sent out word that the tunnel from that building to Chase Tower at 600 Travis St. is now open again. The route takes a turn beneath the pretty-much-done demo of the newly former Houston Chronicle headquarters, evidently still slated by Hines for surface-lotdom for now — plus whatever work the folks next door have planned below ground to tie their own development into the tunnel network. Meanwhile, another block southwest down the same tunnel system (as visible in the 90-degrees-or-so rotated schematic above), Skanska has just signaled the go-ahead on the above-ground section of its Capitol Tower; no word yet on whether that construction will have another round of tunnel closure associated with it. [Previously on Swamplot] Map of Downtown tunnel connections: Skanska