DNT_4L_DC_SRT_DNT_Interchange_Closure_021217Sam Rayburn Tollway/Dallas North Tollway intersection ramp closures will take place nightly from 10 p.m.-5 a.m. on Feb. 12-17 as part of the project to add a travel lane in both directions to the DNT from the SRT to the President George Bush Turnpike. The northeast-bound and southwest-bound SRT to southbound DNT direct-connector ramps will be closed. The northbound DNT to northeast-bound and southwest-bound SRT direct-connector ramps will be closed as well. Three detours are recommended: • Westbound SRT to south-bound DNT detour—Drivers can exit at Parkwood Boulevard and continue on SH 121 to Dallas Parkway and turn left. Drivers can enter the southbound DNT at the entrance ramp south of SH 121. • Eastbound SRT to south-bound DNT detour—Drivers will exit at Dallas Parkway and continue on SH 121 to Dallas Parkway, were they can turn right. Drivers can enter southbound DNT at the entrance ramp south of SH 121. • Northbound DNT to northeast-bound and southwest-bound SRT detour—Motorists can exit at Headquarters Drive/SH 121 and continue north to SH 121, where they can turn east or west and continue on the frontage road to enter the SRT.