VIDEO: Time Lapse Shows Work on MemFix 4
So, what are those crews doing when they’ve got I-240 all closed off?
Well, a new time-lapse video from the Tennessee Department of Transportation (TDOT) shows what they’ve been up to.
MemFix 4 is TDOT’s $54-million project to repair or replace four bridges in the Poplar/240 area. 
TDOT
A screen grab from TDOT’s MemFix 4 time lapse video.