I found this on Transtar -
HIGHWAY: IH-45 GULF
DESCRIPTION: Northbound from CULLEN to IH-69 Interchange . 2 Outside Lane(s). Closed overnight from 9:00 PM, Friday, November 3 to 5:00 AM, Saturday, November 4. Scott Entrance Ramp will be closed for the duration.
START DATE: 11/3/2017
I did not see anything else as far as construction on IH-45 near Scott / Cullen / Spur 5